diff --git a/labs/Lab4_UILabs/.gitignore b/labs/Lab4_UILabs/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..ceff37eff0e621e8f96607f26a6bced4727fb5a5
--- /dev/null
+++ b/labs/Lab4_UILabs/.gitignore
@@ -0,0 +1,39 @@
+# built application files
+*.apk
+*.ap_
+
+# files for the dex VM
+*.dex
+
+# Java class files
+*.class
+
+# generated files
+bin/
+gen/
+
+# Local configuration file (sdk path, etc)
+local.properties
+
+# Eclipse project files
+.classpath
+.settings
+
+# Proguard folder generated by Eclipse
+proguard/
+
+# Intellij project files
+*.iml
+*.ipr
+*.iws
+.idea
+.idea/workspace.xml
+.gradle
+build/
+captures/
+
+# Mac files
+.DS_Store
+
+# Windows thumbnail db
+Thumbs.db
diff --git a/labs/Lab4_UILabs/Lab-UserInterface.pdf b/labs/Lab4_UILabs/Lab-UserInterface.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..afdee9a0aba74fe7bc621b0d6b002ac9111663a4
Binary files /dev/null and b/labs/Lab4_UILabs/Lab-UserInterface.pdf differ
diff --git a/labs/Lab4_UILabs/UILabs.mp4 b/labs/Lab4_UILabs/UILabs.mp4
new file mode 100644
index 0000000000000000000000000000000000000000..fc2fff2a351ffffdb46aac00f207b41e93085e58
Binary files /dev/null and b/labs/Lab4_UILabs/UILabs.mp4 differ
diff --git a/labs/Lab4_UILabs/app/build.gradle b/labs/Lab4_UILabs/app/build.gradle
new file mode 100644
index 0000000000000000000000000000000000000000..bd3295d2e5193047888bc73c7b30661159e0ea22
--- /dev/null
+++ b/labs/Lab4_UILabs/app/build.gradle
@@ -0,0 +1,32 @@
+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android-extensions'
+apply plugin: 'kotlin-android'
+
+android {
+    compileSdkVersion 26
+//    buildToolsVersion '27.0.3'
+
+    defaultConfig {
+        applicationId "course.labs.todomanager"
+        minSdkVersion 21
+        targetSdkVersion 26
+
+        testApplicationId "course.labs.todomanager.tests"
+        testInstrumentationRunner "android.test.InstrumentationTestRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
+        }
+    }
+}
+
+dependencies {
+    androidTestImplementation 'com.jayway.android.robotium:robotium-solo:5.6.3'
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}
+repositories {
+    mavenCentral()
+}
diff --git a/labs/Lab4_UILabs/app/src/androidTest/java/course/labs/todomanager/tests/Test1_SubmitTest.kt b/labs/Lab4_UILabs/app/src/androidTest/java/course/labs/todomanager/tests/Test1_SubmitTest.kt
new file mode 100644
index 0000000000000000000000000000000000000000..47715e57595affbbf9196368ca5ce6a96d7eb30f
--- /dev/null
+++ b/labs/Lab4_UILabs/app/src/androidTest/java/course/labs/todomanager/tests/Test1_SubmitTest.kt
@@ -0,0 +1,99 @@
+package course.labs.todomanager.tests
+
+import android.test.ActivityInstrumentationTestCase2
+
+import com.robotium.solo.Solo
+
+import course.labs.todomanager.ToDoManagerActivity
+import junit.framework.Assert
+
+class Test1_SubmitTest : ActivityInstrumentationTestCase2<ToDoManagerActivity>(ToDoManagerActivity::class.java) {
+
+    private var solo: Solo? = null
+
+    @Throws(Exception::class)
+    override fun setUp() {
+        solo = Solo(instrumentation, activity)
+    }
+
+    @Throws(Exception::class)
+    override fun tearDown() {
+        solo!!.finishOpenedActivities()
+    }
+
+    // Execute the SubmitTest
+    fun testRun() {
+
+        val delay = 2000
+
+        // ============= Section One ===============
+        // Wait for activity: 'course.labs.todomanager.ToDoManagerActivity'
+        Assert.assertTrue(
+                "SubmitTest failed:" + "Section One:"
+                        + "ToDoManagerActivity did not load correctly.",
+                solo!!.waitForActivity(course.labs.todomanager.ToDoManagerActivity::class.java))
+
+        // Click on action bar item to delete all items
+        solo!!.clickOnActionBarItem(0x1)
+
+        solo!!.sleep(delay)
+
+        // Get footer view
+        Assert.assertTrue("FooterView didn't appear",
+                solo!!.waitForView(course.labs.todomanager.R.id.footerView))
+
+        // Click on Add New ToDo Item
+        solo!!.clickOnView(solo!!.getView(course.labs.todomanager.R.id.footerView))
+
+        // Wait for activity: 'course.labs.todomanager.AddToDoActivity'
+        Assert.assertTrue(
+                "Submit Test failed:" + "Section One:"
+                        + "AddToDoActivity did not correctly load.",
+                solo!!.waitForActivity(course.labs.todomanager.AddToDoActivity::class.java))
+
+        // Hide the soft keyboard
+        solo!!.hideSoftKeyboard()
+
+        // Enter the text: 't4'
+        solo!!.clearEditText(solo!!
+                .getView(course.labs.todomanager.R.id.title) as android.widget.EditText)
+
+        solo!!.enterText(solo!!
+                .getView(course.labs.todomanager.R.id.title) as android.widget.EditText, "t4")
+
+        // Hide the soft keyboard
+        solo!!.hideSoftKeyboard()
+
+        // Click on Done:
+        solo!!.clickOnView(solo!!.getView(course.labs.todomanager.R.id.statusDone))
+
+        // Click on Low
+        solo!!.clickOnView(solo!!.getView(course.labs.todomanager.R.id.lowPriority))
+
+        // Click on Submit
+        solo!!.clickOnView(solo!!
+                .getView(course.labs.todomanager.R.id.submitButton))
+
+        // ================= Section Two ================
+        // Wait for activity: 'course.labs.todomanager.ToDoManagerActivity'
+        Assert.assertTrue(
+                "SubmitTest failed:"
+                        + "Section Two:"
+                        + "ToDoManagerActivity did not load correctly after pressing submit.",
+                solo!!.waitForActivity(course.labs.todomanager.ToDoManagerActivity::class.java))
+
+        Assert.assertTrue("SubmitTest failed:" + "Section Two:"
+                + "Title was not correctly entered in the ToDoManager",
+                solo!!.searchText("t4"))
+
+        Assert.assertTrue("SubmitTest failed:" + "Section Two:"
+                + "Priority was not correctly entered in the ToDoManager",
+                solo!!.searchText("[lL][oO][wW]"))
+
+        Assert.assertTrue("SubmitTest failed:" + "Section Two:"
+                + "Did not correctly set completion status.",
+                solo!!.isCheckBoxChecked(0))
+
+    }
+
+}
diff --git a/labs/Lab4_UILabs/app/src/androidTest/java/course/labs/todomanager/tests/Test2_DateTimeTest.kt b/labs/Lab4_UILabs/app/src/androidTest/java/course/labs/todomanager/tests/Test2_DateTimeTest.kt
new file mode 100644
index 0000000000000000000000000000000000000000..6c860a11ce5cb8f464ecd557c7cc4a5fd2ed0356
--- /dev/null
+++ b/labs/Lab4_UILabs/app/src/androidTest/java/course/labs/todomanager/tests/Test2_DateTimeTest.kt
@@ -0,0 +1,142 @@
+package course.labs.todomanager.tests
+
+import android.test.ActivityInstrumentationTestCase2
+
+import com.robotium.solo.Solo
+
+import course.labs.todomanager.ToDoManagerActivity
+import junit.framework.Assert
+
+class Test2_DateTimeTest : ActivityInstrumentationTestCase2<ToDoManagerActivity>(ToDoManagerActivity::class.java) {
+
+    private var solo: Solo? = null
+
+    @Throws(Exception::class)
+    override fun setUp() {
+        solo = Solo(instrumentation)
+        activity
+    }
+
+    @Throws(Exception::class)
+    override fun tearDown() {
+        solo!!.finishOpenedActivities()
+    }
+
+    // Executes DateTimeTest
+    fun testRun() {
+
+        val delay = 2000
+
+        // ============== Section One ================
+
+        // Wait for activity: 'course.labs.todomanager.ToDoManagerActivity'
+        Assert.assertTrue(
+                "DateTimeTest failed:" + "Section One:"
+                        + "ToDoManagerActivity did not correctly load.",
+                solo!!.waitForActivity(course.labs.todomanager.ToDoManagerActivity::class.java))
+
+        // Click on action bar item to delete all items
+        solo!!.clickOnActionBarItem(0x1)
+
+        solo!!.sleep(delay)
+
+        // Get footer view
+        Assert.assertTrue("FooterView didn't appear",
+                solo!!.waitForView(course.labs.todomanager.R.id.footerView))
+
+        // Click on Add New ToDo Item
+        solo!!.clickOnView(solo!!.getView(course.labs.todomanager.R.id.footerView))
+
+        // Wait for activity: 'course.labs.todomanager.AddToDoActivity'
+        Assert.assertTrue(
+                "DateTimeTest failed:" + "Section One:"
+                        + "AddToDoActivity did not correctly load.",
+                solo!!.waitForActivity(course.labs.todomanager.AddToDoActivity::class.java))
+
+        // Hide the soft keyboard
+        solo!!.hideSoftKeyboard()
+
+        // Enter the text: 't1'
+        solo!!.clearEditText(solo!!
+                .getView(course.labs.todomanager.R.id.title) as android.widget.EditText)
+
+        solo!!.enterText(solo!!
+                .getView(course.labs.todomanager.R.id.title) as android.widget.EditText, "t1")
+
+        // Hide the soft keyboard
+        solo!!.hideSoftKeyboard()
+
+        // Click on Done:
+        solo!!.clickOnView(solo!!.getView(course.labs.todomanager.R.id.statusDone))
+
+        // Click on Low
+        solo!!.clickOnView(solo!!.getView(course.labs.todomanager.R.id.lowPriority))
+
+        // Click on Choose Date
+        solo!!.clickOnView(solo!!
+                .getView(course.labs.todomanager.R.id.date_picker_button))
+
+        // Wait for dialog
+        solo!!.waitForDialogToOpen(10000)
+
+        // Really set the date
+        solo!!.setDatePicker(0, 2014, 1, 28)
+
+        // Click on Done
+        solo!!.clickOnView(solo!!.getView(android.R.id.button1))
+
+        solo!!.sleep(delay)
+
+        // Click on Choose Time
+        solo!!.clickOnView(solo!!
+                .getView(course.labs.todomanager.R.id.time_picker_button))
+
+        // Wait for dialog
+        solo!!.waitForDialogToOpen(10000)
+
+
+        // Really set the time
+        solo!!.setTimePicker(0, 9, 19)
+
+        // Click on Done
+        solo!!.clickOnView(solo!!.getView(android.R.id.button1))
+
+        solo!!.sleep(delay)
+
+        // Click on Submit
+        solo!!.clickOnView(solo!!
+                .getView(course.labs.todomanager.R.id.submitButton))
+
+        // Wait for activity: 'course.labs.todomanager.ToDoManagerActivity'
+        Assert.assertTrue(
+                "DateTimeTest failed:" + "Section One:"
+                        + "ToDoManagerActivity did not load correctly",
+                solo!!.waitForActivity(course.labs.todomanager.ToDoManagerActivity::class.java))
+
+        // ============== Section Two =============
+
+        // Makes sure the title was changed correctly
+        Assert.assertTrue("DateTimeTest failed:" + "Section Two:"
+                + "Did not modify title correctly", solo!!.searchText("t1"))
+
+        // Checks to see if the status was changed correctly
+        Assert.assertTrue("DateTimeTest failed:" + "Section Two:"
+                + "Did not change status correctly", solo!!.isCheckBoxChecked(0))
+
+        // Checks to make sure the priority was correctly set
+        Assert.assertTrue("DateTimeTest failed:" + "Section Two:"
+                + "Did not correctly set priority",
+                solo!!.searchText("[lL][oO][wW]"))
+
+        // Checks to make sure the Date was correctly set
+        Assert.assertTrue("DateTimeTest failed:" + "Section Two:"
+                + "Did not correctly set the date",
+                solo!!.searchText("2014-02-28"))
+
+        // Checks to make sure the Time was correctly set
+        Assert.assertTrue("DateTimeTest failed:" + "Section Two:"
+                + "Did not correctly set the time", solo!!.searchText("09:19:00"))
+
+    }
+
+}
\ No newline at end of file
diff --git a/labs/Lab4_UILabs/app/src/androidTest/java/course/labs/todomanager/tests/Test3_CancelTest.kt b/labs/Lab4_UILabs/app/src/androidTest/java/course/labs/todomanager/tests/Test3_CancelTest.kt
new file mode 100644
index 0000000000000000000000000000000000000000..e4545fc45528a77c64a84b5a88029b99c37f3fd7
--- /dev/null
+++ b/labs/Lab4_UILabs/app/src/androidTest/java/course/labs/todomanager/tests/Test3_CancelTest.kt
@@ -0,0 +1,137 @@
+package course.labs.todomanager.tests
+
+import android.test.ActivityInstrumentationTestCase2
+
+import com.robotium.solo.Solo
+
+import course.labs.todomanager.ToDoManagerActivity
+import junit.framework.Assert
+
+class Test3_CancelTest : ActivityInstrumentationTestCase2<ToDoManagerActivity>(ToDoManagerActivity::class.java) {
+    private var solo: Solo? = null
+
+    @Throws(Exception::class)
+    public override fun setUp() {
+        solo = Solo(instrumentation, activity)
+    }
+
+    @Throws(Exception::class)
+    public override fun tearDown() {
+        solo!!.finishOpenedActivities()
+    }
+
+    // Executes the CancelTest
+    fun testRun() {
+
+        val delay = 2000
+
+        // Wait for activity: 'course.labs.todomanager.ToDoManagerActivity'
+        Assert.assertTrue(
+                "CancelTest failed:" + "Section One:"
+                        + "ToDoManagerActivity did not load correctly.",
+                solo!!.waitForActivity(course.labs.todomanager.ToDoManagerActivity::class.java))
+
+        // Click on action bar item
+        solo!!.clickOnActionBarItem(0x1)
+
+        solo!!.sleep(delay)
+
+        // Get footer view
+        Assert.assertTrue("FooterView didn't appear",
+                solo!!.waitForView(course.labs.todomanager.R.id.footerView))
+
+        // Click on Add New ToDo Item
+        solo!!.clickOnView(solo!!.getView(course.labs.todomanager.R.id.footerView))
+
+        // Wait for activity: 'course.labs.todomanager.AddToDoActivity'
+        Assert.assertTrue(
+                "CancelTest failed:" + "Section One:"
+                        + "AddToDoActivity did not load correctly.",
+                solo!!.waitForActivity(course.labs.todomanager.AddToDoActivity::class.java))
+
+        // Hide the soft keyboard
+        solo!!.hideSoftKeyboard()
+
+        // Enter the text: 't3'
+        solo!!.clearEditText(solo!!
+                .getView(course.labs.todomanager.R.id.title) as android.widget.EditText)
+
+        solo!!.enterText(solo!!
+                .getView(course.labs.todomanager.R.id.title) as android.widget.EditText, "t3")
+
+        // Hide the soft keyboard
+        solo!!.hideSoftKeyboard()
+
+        // Click on Done:
+        solo!!.clickOnView(solo!!.getView(course.labs.todomanager.R.id.statusDone))
+
+        // Click on High
+        solo!!.clickOnView(solo!!
+                .getView(course.labs.todomanager.R.id.highPriority))
+
+        // Click on Cancel
+        solo!!.clickOnView(solo!!
+                .getView(course.labs.todomanager.R.id.cancelButton))
+
+        // Wait for activity: 'course.labs.todomanager.AddToDoActivity'
+        Assert.assertTrue(
+                "Cancel test failed:" + "Section One:"
+                        + "AddToDoActivity did not correctly load.",
+                solo!!.waitForActivity(course.labs.todomanager.AddToDoActivity::class.java))
+
+        // Click on Add New ToDo Item
+        solo!!.clickOnView(solo!!.getView(course.labs.todomanager.R.id.footerView))
+
+        // Wait for activity: 'course.labs.todomanager.AddToDoActivity'
+        Assert.assertTrue(
+                "CancelTest failed:" + "Section One:"
+                        + "AddToDoActivity did not load correctly.",
+                solo!!.waitForActivity(course.labs.todomanager.AddToDoActivity::class.java))
+
+        // Hide the soft keyboard
+        solo!!.hideSoftKeyboard()
+
+        // Enter the text: 't4'
+        solo!!.clearEditText(solo!!
+                .getView(course.labs.todomanager.R.id.title) as android.widget.EditText)
+
+        solo!!.enterText(solo!!
+                .getView(course.labs.todomanager.R.id.title) as android.widget.EditText, "t4")
+
+        // Hide the soft keyboard
+        solo!!.hideSoftKeyboard()
+
+        // Click on Done:
+        solo!!.clickOnView(solo!!.getView(course.labs.todomanager.R.id.statusDone))
+
+        // Click on Low
+        solo!!.clickOnView(solo!!.getView(course.labs.todomanager.R.id.lowPriority))
+
+        // Click on Submit
+        solo!!.clickOnView(solo!!
+                .getView(course.labs.todomanager.R.id.submitButton))
+
+        // ================ Section Two ===================
+
+        // Wait for activity: 'course.labs.todomanager.ToDoManagerActivity'
+        Assert.assertTrue(
+                "CancelTest failed:" + "Section Two:"
+                        + "ToDoManagerActivity did not load correctly.",
+                solo!!.waitForActivity(course.labs.todomanager.ToDoManagerActivity::class.java))
+
+        Assert.assertFalse("CancelTest failed:" + "Section Two:"
+                + "Did not correctly cancel the creation of a ToDo Task.",
+                solo!!.searchText("t3"))
+
+        Assert.assertTrue("CancelTest failed:" + "Section Two:"
+                + "Did not correctly set title of ToDo Task following cancel.",
+                solo!!.searchText("t4"))
+
+        Assert.assertTrue(
+                "CancelTest failed:"
+                        + "Section Two:"
+                        + "Did not correctly set priority of ToDo Task following cancel.",
+                solo!!.searchText("[lL][oO][wW]"))
+
+    }
+}
diff --git a/labs/Lab4_UILabs/app/src/androidTest/java/course/labs/todomanager/tests/Test4_ResetTest.kt b/labs/Lab4_UILabs/app/src/androidTest/java/course/labs/todomanager/tests/Test4_ResetTest.kt
new file mode 100644
index 0000000000000000000000000000000000000000..3136df58cfbd9d7e26479b116bb3a1192b64c9d5
--- /dev/null
+++ b/labs/Lab4_UILabs/app/src/androidTest/java/course/labs/todomanager/tests/Test4_ResetTest.kt
@@ -0,0 +1,117 @@
+package course.labs.todomanager.tests
+
+import android.test.ActivityInstrumentationTestCase2
+
+import com.robotium.solo.Solo
+
+import course.labs.todomanager.ToDoManagerActivity
+import junit.framework.Assert
+
+class Test4_ResetTest : ActivityInstrumentationTestCase2<ToDoManagerActivity>(ToDoManagerActivity::class.java) {
+    private var solo: Solo? = null
+
+    @Throws(Exception::class)
+    public override fun setUp() {
+        solo = Solo(instrumentation, activity)
+    }
+
+    @Throws(Exception::class)
+    public override fun tearDown() {
+        solo!!.finishOpenedActivities()
+    }
+
+    // Executes the ResetTest
+    fun testRun() {
+
+        val delay = 2000
+
+        // ============= Section One ==============
+        // Wait for activity: 'course.labs.todomanager.ToDoManagerActivity'
+        Assert.assertTrue(
+                "ResetTest failed:" + "Section One:"
+                        + "ToDoManagerActivity did not correctly load.",
+                solo!!.waitForActivity(course.labs.todomanager.ToDoManagerActivity::class.java))
+
+        // Click on action bar item
+        solo!!.clickOnActionBarItem(0x1)
+
+        solo!!.sleep(delay)
+
+        // Get footer view
+        Assert.assertTrue("FooterView didn't appear",
+                solo!!.waitForView(course.labs.todomanager.R.id.footerView))
+
+        // Click on Add New ToDo Item
+        solo!!.clickOnView(solo!!.getView(course.labs.todomanager.R.id.footerView))
+
+        // Wait for activity: 'course.labs.todomanager.AddToDoActivity'
+        Assert.assertTrue(
+                "ResetTest failed:" + "Section One:"
+                        + "AddToDoActivity did not correctly load.",
+                solo!!.waitForActivity(course.labs.todomanager.AddToDoActivity::class.java))
+
+        // Hide the soft keyboard
+        solo!!.hideSoftKeyboard()
+
+        // Enter the text: 't2'
+        solo!!.clearEditText(solo!!
+                .getView(course.labs.todomanager.R.id.title) as android.widget.EditText)
+
+        solo!!.enterText(solo!!
+                .getView(course.labs.todomanager.R.id.title) as android.widget.EditText, "t2")
+
+        // Hide the soft keyboard
+        solo!!.hideSoftKeyboard()
+
+        // Click on Done:
+        solo!!.clickOnView(solo!!.getView(course.labs.todomanager.R.id.statusDone))
+
+        // Click on High
+        solo!!.clickOnView(solo!!
+                .getView(course.labs.todomanager.R.id.highPriority))
+
+        // Click on Reset
+        solo!!.clickOnView(solo!!.getView(course.labs.todomanager.R.id.resetButton))
+
+        solo!!.sleep(delay)
+
+        // Click on Submit
+        solo!!.clickOnView(solo!!
+                .getView(course.labs.todomanager.R.id.submitButton))
+
+        // ============= Section Two =================
+        // Checks that reset button reset the text
+
+        // Wait for activity: 'course.labs.todomanager.AddToDoActivity'
+        Assert.assertTrue(
+                "ResetTest failed:" + "Section Two:"
+                        + "AddToDoActivity did not correctly load.",
+                solo!!.waitForActivity(course.labs.todomanager.AddToDoActivity::class.java))
+
+        Assert.assertFalse("ResetTest failed:" + "Section Two:"
+                + "Title of ToDo Task was not correctly reset.",
+                solo!!.searchText("t2"))
+
+        // Makes sure that the check box is not checked
+        Assert.assertFalse("ResetTest failed:" + "SectionTwo:"
+                + "Done status of ToDo Task was not correctly reset",
+                solo!!.isCheckBoxChecked(0))
+
+        // Makes sure that the priority was reset to Medium
+        Assert.assertTrue("ResetTest failed:" + "Section Two:"
+                + "Priority of ToDo Task was not correctly reset",
+                solo!!.searchText("[mM][eE][dD]"))
+
+        // Clicks on the Done box
+        solo!!.clickOnCheckBox(0)
+
+        // Makes sure that was able to correctly change completion status from
+        // ToDoManagerActivity
+        Assert.assertTrue(
+                "ResetTest failed:"
+                        + "Section Two:"
+                        + "Was not able to modify Done status of ToDo Task from ToDoManagerActivity",
+                solo!!.isCheckBoxChecked(0))
+
+    }
+}
\ No newline at end of file
diff --git a/labs/Lab4_UILabs/app/src/androidTest/res/drawable/.gitignore b/labs/Lab4_UILabs/app/src/androidTest/res/drawable/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/labs/Lab4_UILabs/app/src/main/AndroidManifest.xml b/labs/Lab4_UILabs/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000000000000000000000000000000000000..e5b11df3179c1772022fc4094b0563131406cc2f
--- /dev/null
+++ b/labs/Lab4_UILabs/app/src/main/AndroidManifest.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="course.labs.todomanager"
+    android:versionCode="1"
+    android:versionName="1.0" >
+
+    <application
+        android:allowBackup="true"
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name" >
+        <activity
+            android:name=".ToDoManagerActivity"
+            android:label="@string/app_name" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity android:name=".AddToDoActivity" >
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/labs/Lab4_UILabs/app/src/main/java/course/labs/todomanager/AddToDoActivity.kt b/labs/Lab4_UILabs/app/src/main/java/course/labs/todomanager/AddToDoActivity.kt
new file mode 100644
index 0000000000000000000000000000000000000000..9f48e05914ecfb2d1b64835ca7601699de9f756c
--- /dev/null
+++ b/labs/Lab4_UILabs/app/src/main/java/course/labs/todomanager/AddToDoActivity.kt
@@ -0,0 +1,237 @@
+package course.labs.todomanager
+
+import java.util.Calendar
+import java.util.Date
+
+import android.app.Activity
+import android.app.DatePickerDialog
+import android.app.Dialog
+import android.app.DialogFragment
+import android.app.TimePickerDialog
+import android.content.Intent
+import android.os.Bundle
+import android.util.Log
+import android.view.View
+import android.view.View.OnClickListener
+import android.widget.Button
+import android.widget.DatePicker
+import android.widget.EditText
+import android.widget.RadioButton
+import android.widget.RadioGroup
+import android.widget.TextView
+import android.widget.TimePicker
+import course.labs.todomanager.ToDoItem.Priority
+import course.labs.todomanager.ToDoItem.Status
+
+class AddToDoActivity : Activity() {
+
+    private var mDate: Date? = null
+    private var mPriorityRadioGroup: RadioGroup? = null
+    private var mStatusRadioGroup: RadioGroup? = null
+    private var mTitleText: EditText? = null
+    private var mDefaultStatusButton: RadioButton? = null
+    private var mDefaultPriorityButton: RadioButton? = null
+    private var dateView: TextView? = null
+    private var timeView: TextView? = null
+
+    private val priority: Priority
+        get() {
+
+            when (mPriorityRadioGroup!!.checkedRadioButtonId) {
+                R.id.lowPriority -> {
+                    return Priority.LOW
+                }
+                R.id.highPriority -> {
+                    return Priority.HIGH
+                }
+                else -> {
+                    return Priority.MED
+                }
+            }
+        }
+
+    private val status: Status
+        get() {
+
+            when (mStatusRadioGroup!!.checkedRadioButtonId) {
+                R.id.statusDone -> {
+                    return Status.DONE
+                }
+                else -> {
+                    return Status.NOTDONE
+                }
+            }
+        }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.add_todo)
+
+        mTitleText = findViewById<View>(R.id.title) as EditText
+        mDefaultStatusButton = findViewById<View>(R.id.statusNotDone) as RadioButton
+        mDefaultPriorityButton = findViewById<View>(R.id.medPriority) as RadioButton
+        mPriorityRadioGroup = findViewById<View>(R.id.priorityGroup) as RadioGroup
+        mStatusRadioGroup = findViewById<View>(R.id.statusGroup) as RadioGroup
+        dateView = findViewById<View>(R.id.date) as TextView
+        timeView = findViewById<View>(R.id.time) as TextView
+
+        // Set the default date and time
+
+        setDefaultDateTime()
+
+        // OnClickListener for the Date button, calls showDatePickerDialog() to
+        // show
+        // the Date dialog
+
+        val datePickerButton = findViewById<View>(R.id.date_picker_button) as Button
+        datePickerButton.setOnClickListener { showDatePickerDialog() }
+
+        // OnClickListener for the Time button, calls showTimePickerDialog() to
+        // show
+        // the Time Dialog
+
+        val timePickerButton = findViewById<View>(R.id.time_picker_button) as Button
+        timePickerButton.setOnClickListener { showTimePickerDialog() }
+
+        // OnClickListener for the Cancel Button,
+
+        val cancelButton = findViewById<View>(R.id.cancelButton) as Button
+        cancelButton.setOnClickListener { Log.i(TAG, "Entered cancelButton.OnClickListener.onClick()")
+
+            // TODO - Indicate result and finish
+
+        }
+
+        // TODO - Set up OnClickListener for the Reset Button
+
+
+        // Set up OnClickListener for the Submit Button
+
+        val submitButton = findViewById<View>(R.id.submitButton) as Button
+        submitButton.setOnClickListener {
+            Log.i(TAG, "Entered submitButton.OnClickListener.onClick()")
+
+            // TODO - gather ToDoItem data
+
+
+            // TODO - return data Intent and finish
+        }
+    }
+
+    private fun setDefaultDateTime() {
+
+        // Default is current time + 7 days
+        mDate = Date()
+        mDate = Date(mDate!!.time + SEVEN_DAYS)
+
+        val c = Calendar.getInstance()
+        c.time = mDate
+
+        setDateString(c.get(Calendar.YEAR), c.get(Calendar.MONTH),
+                c.get(Calendar.DAY_OF_MONTH))
+
+        dateView!!.text = dateString
+
+        setTimeString(c.get(Calendar.HOUR_OF_DAY), c.get(Calendar.MINUTE),
+                c.get(Calendar.MILLISECOND))
+
+        timeView!!.text = timeString
+    }
+
+    // DialogFragment used to pick a ToDoItem deadline date
+
+    class DatePickerFragment : DialogFragment(), DatePickerDialog.OnDateSetListener {
+
+        override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+
+            // Use the current date as the default date in the picker
+
+            val c = Calendar.getInstance()
+            val year = c.get(Calendar.YEAR)
+            val month = c.get(Calendar.MONTH)
+            val day = c.get(Calendar.DAY_OF_MONTH)
+
+            // Create a new instance of DatePickerDialog and return it
+            return DatePickerDialog(activity, this, year, month, day)
+        }
+
+        override fun onDateSet(view: DatePicker, year: Int, monthOfYear: Int,
+                               dayOfMonth: Int) {
+            setDateString(year, monthOfYear, dayOfMonth)
+            val dateView: TextView = activity.findViewById(R.id.date)
+            dateView.text = dateString
+        }
+
+    }
+
+    // DialogFragment used to pick a ToDoItem deadline time
+
+    class TimePickerFragment : DialogFragment(), TimePickerDialog.OnTimeSetListener {
+
+        override fun onCreateDialog(savedInstanceState: Bundle): Dialog {
+
+            // Use the current time as the default values for the picker
+            val c = Calendar.getInstance()
+            val hour = c.get(Calendar.HOUR_OF_DAY)
+            val minute = c.get(Calendar.MINUTE)
+
+            // Create a new instance of TimePickerDialog and return
+            return TimePickerDialog(activity, this, hour, minute, true)
+        }
+
+        override fun onTimeSet(view: TimePicker, hourOfDay: Int, minute: Int) {
+            setTimeString(hourOfDay, minute, 0)
+            val timeView: TextView = activity.findViewById(R.id.time)
+            timeView.text = timeString
+        }
+    }
+
+    private fun showDatePickerDialog() {
+        val newFragment = DatePickerFragment()
+        newFragment.show(fragmentManager, "datePicker")
+    }
+
+    private fun showTimePickerDialog() {
+        val newFragment = TimePickerFragment()
+        newFragment.show(fragmentManager, "timePicker")
+    }
+
+    companion object {
+
+        // 7 days in milliseconds - 7 * 24 * 60 * 60 * 1000
+        private val SEVEN_DAYS = 604800000
+
+        private val TAG = "Lab-UserInterface"
+
+        private var timeString: String? = null
+        private var dateString: String? = null
+
+        private fun setDateString(year: Int, monthOfYear: Int, dayOfMonth: Int) {
+            var monthOfYear = monthOfYear
+
+            // Increment monthOfYear for Calendar/Date -> Time Format setting
+            monthOfYear++
+            var mon = "" + monthOfYear
+            var day = "" + dayOfMonth
+
+            if (monthOfYear < 10)
+                mon = "0$monthOfYear"
+            if (dayOfMonth < 10)
+                day = "0$dayOfMonth"
+
+            dateString = "$year-$mon-$day"
+        }
+
+        private fun setTimeString(hourOfDay: Int, minute: Int, mili: Int) {
+            var hour = "" + hourOfDay
+            var min = "" + minute
+
+            if (hourOfDay < 10)
+                hour = "0$hourOfDay"
+            if (minute < 10)
+                min = "0$minute"
+
+            timeString = "$hour:$min:00"
+        }
+    }
+}
diff --git a/labs/Lab4_UILabs/app/src/main/java/course/labs/todomanager/ToDoItem.kt b/labs/Lab4_UILabs/app/src/main/java/course/labs/todomanager/ToDoItem.kt
new file mode 100644
index 0000000000000000000000000000000000000000..801bf136c6d63ef3c9ed700ff95567c0c6ff79b2
--- /dev/null
+++ b/labs/Lab4_UILabs/app/src/main/java/course/labs/todomanager/ToDoItem.kt
@@ -0,0 +1,86 @@
+package course.labs.todomanager
+
+import java.text.ParseException
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
+
+import android.content.Intent
+
+class ToDoItem {
+
+    var title = String()
+    var priority = Priority.LOW
+    var status = Status.NOTDONE
+    var date = Date()
+
+    enum class Priority {
+        LOW, MED, HIGH
+    }
+
+    enum class Status {
+        NOTDONE, DONE
+    }
+
+    internal constructor(title: String, priority: Priority, status: Status, date: Date) {
+        this.title = title
+        this.priority = priority
+        this.status = status
+        this.date = date
+    }
+
+    // Create a new ToDoItem from data packaged in an Intent
+
+    internal constructor(intent: Intent) {
+
+        title = intent.getStringExtra(ToDoItem.TITLE)
+        priority = Priority.valueOf(intent.getStringExtra(ToDoItem.PRIORITY))
+        status = Status.valueOf(intent.getStringExtra(ToDoItem.STATUS))
+
+        try {
+            date = ToDoItem.FORMAT.parse(intent.getStringExtra(ToDoItem.DATE))
+        } catch (e: ParseException) {
+            date = Date()
+        }
+
+    }
+
+    override fun toString(): String {
+        return (title + ITEM_SEP + priority + ITEM_SEP + status + ITEM_SEP
+                + FORMAT.format(date))
+    }
+
+    fun toLog(): String {
+        return ("Title:" + title + ITEM_SEP + "Priority:" + priority
+                + ITEM_SEP + "Status:" + status + ITEM_SEP + "Date:"
+                + FORMAT.format(date) + "\n")
+    }
+
+    companion object {
+
+        val ITEM_SEP = System.getProperty("line.separator")
+
+        val TITLE = "title"
+        val PRIORITY = "priority"
+        val STATUS = "status"
+        val DATE = "date"
+        val FILENAME = "filename"
+
+        val FORMAT = SimpleDateFormat(
+                "yyyy-MM-dd HH:mm:ss", Locale.US)
+
+        // Take a set of String data values and
+        // package them for transport in an Intent
+
+        fun packageIntent(intent: Intent, title: String,
+                          priority: Priority, status: Status, date: String) {
+
+            intent.putExtra(ToDoItem.TITLE, title)
+            intent.putExtra(ToDoItem.PRIORITY, priority.toString())
+            intent.putExtra(ToDoItem.STATUS, status.toString())
+            intent.putExtra(ToDoItem.DATE, date)
+
+        }
+    }
+
+}
diff --git a/labs/Lab4_UILabs/app/src/main/java/course/labs/todomanager/ToDoListAdapter.kt b/labs/Lab4_UILabs/app/src/main/java/course/labs/todomanager/ToDoListAdapter.kt
new file mode 100644
index 0000000000000000000000000000000000000000..9dc4f9e5e24685f45aa05702dd8b33ef06be0867
--- /dev/null
+++ b/labs/Lab4_UILabs/app/src/main/java/course/labs/todomanager/ToDoListAdapter.kt
@@ -0,0 +1,123 @@
+package course.labs.todomanager
+
+import java.util.ArrayList
+
+import android.content.Context
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.BaseAdapter
+import android.widget.CheckBox
+import android.widget.CompoundButton
+import android.widget.CompoundButton.OnCheckedChangeListener
+import android.widget.RelativeLayout
+import android.widget.TextView
+import course.labs.todomanager.ToDoItem.Status
+
+class ToDoListAdapter(private val mContext: Context) : BaseAdapter() {
+
+    private val mItems = ArrayList<ToDoItem>()
+
+    // Add a ToDoItem to the adapter
+    // Notify observers that the data set has changed
+
+    fun add(item: ToDoItem) {
+
+        mItems.add(item)
+        notifyDataSetChanged()
+
+    }
+
+    // Clears the list adapter of all items.
+
+    fun clear() {
+
+        mItems.clear()
+        notifyDataSetChanged()
+
+    }
+
+    // Returns the number of ToDoItems
+
+    override fun getCount(): Int {
+
+        return mItems.size
+
+    }
+
+    // Retrieve the number of ToDoItems
+
+    override fun getItem(pos: Int): Any {
+
+        return mItems[pos]
+
+    }
+
+    // Get the ID for the ToDoItem
+    // In this case it's just the position
+
+    override fun getItemId(pos: Int): Long {
+
+        return pos.toLong()
+
+    }
+
+    // TODO - Create a View for the ToDoItem at specified position
+    // Remember to check whether convertView holds an already allocated View
+    // before created a new View.
+    // Consider using the ViewHolder pattern to make scrolling more efficient
+    // See: http://developer.android.com/training/improving-layouts/smooth-scrolling.html
+
+    override fun getView(position: Int, convertView: View?, parent: ViewGroup): View? {
+
+        // TODO - Get the current ToDoItem
+
+
+        val viewHolder: ViewHolder
+
+        if (null == convertView) {
+
+            viewHolder = ViewHolder()
+
+            // TODO - Inflate the View for this ToDoItem
+
+        } else {
+            viewHolder = convertView.tag as ViewHolder
+            viewHolder.mStatusView!!.setOnCheckedChangeListener(null)
+
+        }
+
+        // TODO - Fill in specific ToDoItem data
+        // Remember that the data that goes in this View
+        // corresponds to the user interface elements defined
+        // in the layout file
+
+        // TODO - Display Title in TextView
+
+
+        // TODO - Set up Status CheckBox
+
+
+        // TODO - Display Priority in a TextView
+
+        // TODO - Display Time and Date
+
+        return viewHolder.mItemLayout
+
+    }
+
+    internal class ViewHolder {
+        var position: Int = 0
+        var mItemLayout: RelativeLayout? = null
+        var mTitleView: TextView? = null
+        var mStatusView: CheckBox? = null
+        var mPriorityView: TextView? = null
+        var mDateView: TextView? = null
+    }
+
+    companion object {
+
+        private val TAG = "Lab-UserInterface"
+    }
+}
diff --git a/labs/Lab4_UILabs/app/src/main/java/course/labs/todomanager/ToDoManagerActivity.kt b/labs/Lab4_UILabs/app/src/main/java/course/labs/todomanager/ToDoManagerActivity.kt
new file mode 100644
index 0000000000000000000000000000000000000000..31a7f22f94599e7385fec4b3a0377f69b0c4cd2f
--- /dev/null
+++ b/labs/Lab4_UILabs/app/src/main/java/course/labs/todomanager/ToDoManagerActivity.kt
@@ -0,0 +1,189 @@
+package course.labs.todomanager
+
+import android.app.Activity
+import java.io.BufferedReader
+import java.io.BufferedWriter
+import java.io.FileInputStream
+import java.io.FileNotFoundException
+import java.io.FileOutputStream
+import java.io.IOException
+import java.io.InputStreamReader
+import java.io.OutputStreamWriter
+import java.io.PrintWriter
+import java.text.ParseException
+import java.util.Date
+
+import android.app.ListActivity
+import android.content.Context
+import android.content.Intent
+import android.os.Bundle
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.Menu
+import android.view.MenuItem
+import android.view.View
+import android.view.View.OnClickListener
+import android.widget.TextView
+import course.labs.todomanager.ToDoItem.Priority
+import course.labs.todomanager.ToDoItem.Status
+
+class ToDoManagerActivity : ListActivity() {
+
+    internal lateinit var mAdapter: ToDoListAdapter
+
+    public override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        // Create a new TodoListAdapter for this ListActivity's ListView
+        mAdapter = ToDoListAdapter(applicationContext)
+
+        // Put divider between ToDoItems and FooterView
+        listView.setFooterDividersEnabled(true)
+
+        // TODO - Inflate footerView for footer_view.xml file
+
+
+        // TODO - Add footerView to ListView
+
+        // TODO - Attach Listener to FooterView
+
+        // TODO - Attach the adapter to this ListActivity's ListView
+
+    }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+
+        Log.i(TAG, "Entered onActivityResult()")
+
+        // TODO - Check result code and request code
+        // if user submitted a new ToDoItem
+        // Create a new ToDoItem from the data Intent
+        // and then add it to the adapter
+
+    }
+
+    // Do not modify below here
+
+    public override fun onResume() {
+        super.onResume()
+
+        // Load saved ToDoItems, if necessary
+
+        if (mAdapter.count == 0)
+            loadItems()
+    }
+
+    override fun onPause() {
+        super.onPause()
+
+        // Save ToDoItems
+
+        saveItems()
+
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        super.onCreateOptionsMenu(menu)
+
+        menu.add(Menu.NONE, MENU_DELETE, Menu.NONE, "Delete all")
+        menu.add(Menu.NONE, MENU_DUMP, Menu.NONE, "Dump to log")
+        return true
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        when (item.itemId) {
+            MENU_DELETE -> {
+                mAdapter.clear()
+                return true
+            }
+            MENU_DUMP -> {
+                dump()
+                return true
+            }
+            else -> return super.onOptionsItemSelected(item)
+        }
+    }
+
+    fun dump() {
+        for (i in 0 until mAdapter.count) {
+            val data = (mAdapter.getItem(i) as ToDoItem).toLog()
+            Log.i(TAG,
+                    "Item " + i + ": " + data.replace(ToDoItem.ITEM_SEP, ","))
+        }
+    }
+
+    // Load stored ToDoItems
+    private fun loadItems() {
+        var reader: BufferedReader? = null
+        try {
+            val fis = openFileInput(FILE_NAME)
+            reader = BufferedReader(InputStreamReader(fis))
+
+            var title: String? = null
+            var priority: String? = null
+            var status: String? = null
+            var date: Date? = null
+
+            do {
+                title = reader.readLine();
+                if (title == null)
+                    break
+                priority = reader.readLine()
+                status = reader.readLine()
+                date = ToDoItem.FORMAT.parse(reader.readLine())
+                mAdapter.add(ToDoItem(title, Priority.valueOf(priority),
+                        Status.valueOf(status), date))
+
+            }
+            while (true)
+
+        } catch (e: FileNotFoundException) {
+            e.printStackTrace()
+        } catch (e: IOException) {
+            e.printStackTrace()
+        } catch (e: ParseException) {
+            e.printStackTrace()
+        } finally {
+            if (null != reader) {
+                try {
+                    reader.close()
+                } catch (e: IOException) {
+                    e.printStackTrace()
+                }
+
+            }
+        }
+    }
+
+    // Save ToDoItems to file
+    private fun saveItems() {
+        var writer: PrintWriter? = null
+        try {
+            val fos = openFileOutput(FILE_NAME, Context.MODE_PRIVATE)
+            writer = PrintWriter(BufferedWriter(OutputStreamWriter(
+                    fos)))
+
+            for (idx in 0 until mAdapter.count) {
+
+                writer.println(mAdapter.getItem(idx))
+
+            }
+        } catch (e: IOException) {
+            e.printStackTrace()
+        } finally {
+            writer?.close()
+        }
+    }
+
+
+    companion object {
+
+        private val ADD_TODO_ITEM_REQUEST = 0
+        private val FILE_NAME = "TodoManagerActivityData.txt"
+        private val TAG = "Lab-UserInterface"
+
+        // IDs for menu items
+        private val MENU_DELETE = Menu.FIRST
+        private val MENU_DUMP = Menu.FIRST + 1
+    }
+}
\ No newline at end of file
diff --git a/labs/Lab4_UILabs/app/src/main/res/drawable-hdpi/ic_launcher.png b/labs/Lab4_UILabs/app/src/main/res/drawable-hdpi/ic_launcher.png
new file mode 100644
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diff --git a/labs/Lab4_UILabs/app/src/main/res/drawable-ldpi/ic_launcher.png b/labs/Lab4_UILabs/app/src/main/res/drawable-ldpi/ic_launcher.png
new file mode 100644
index 0000000000000000000000000000000000000000..ebfac7d78b9e17c113f734d10af74bd2b100beba
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diff --git a/labs/Lab4_UILabs/app/src/main/res/drawable-mdpi/ic_launcher.png b/labs/Lab4_UILabs/app/src/main/res/drawable-mdpi/ic_launcher.png
new file mode 100644
index 0000000000000000000000000000000000000000..1183441937efcae0151b75099bec444d034886e9
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diff --git a/labs/Lab4_UILabs/app/src/main/res/drawable-xhdpi/ic_launcher.png b/labs/Lab4_UILabs/app/src/main/res/drawable-xhdpi/ic_launcher.png
new file mode 100644
index 0000000000000000000000000000000000000000..c8ab2a114716b712ec0c5122f9e9524afaa60b52
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diff --git a/labs/Lab4_UILabs/app/src/main/res/layout/add_todo.xml b/labs/Lab4_UILabs/app/src/main/res/layout/add_todo.xml
new file mode 100644
index 0000000000000000000000000000000000000000..c20cc47cdbdd8165523074a9cb0be3d5acb4aafd
--- /dev/null
+++ b/labs/Lab4_UILabs/app/src/main/res/layout/add_todo.xml
@@ -0,0 +1,180 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent" >
+
+    <!-- Title -->
+
+    <TextView
+        android:id="@+id/TitleLabel"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:text="@string/title_string"
+        android:textAppearance="?android:attr/textAppearanceLarge" >
+    </TextView>
+
+    <EditText
+        android:id="@+id/title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_alignParentLeft="true"
+        android:layout_below="@+id/TitleLabel"
+        android:ems="10"
+        android:hint="@string/enter_title_string"
+        android:inputType="textShortMessage" >
+
+        <requestFocus />
+    </EditText>
+
+    <!-- Status -->
+
+    <TextView
+        android:id="@+id/status"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentLeft="true"
+        android:layout_below="@+id/title"
+        android:layout_marginTop="8dp"
+        android:text="@string/status_string"
+        android:textAppearance="?android:attr/textAppearanceLarge" />
+
+    <RadioGroup
+        android:id="@+id/statusGroup"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_alignParentLeft="true"
+        android:layout_below="@id/status"
+        android:orientation="horizontal" >
+
+        <RadioButton
+            android:id="@+id/statusDone"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/done_string" />
+
+        <RadioButton
+            android:id="@+id/statusNotDone"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:checked="true"
+            android:text="@string/not_done_string" />
+    </RadioGroup>
+
+    <!-- Priority -->
+
+    <TextView
+        android:id="@+id/priority"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentLeft="true"
+        android:layout_below="@id/statusGroup"
+        android:layout_marginTop="8dp"
+        android:text="@string/priority_string"
+        android:textAppearance="?android:attr/textAppearanceLarge" />
+
+    <RadioGroup
+        android:id="@+id/priorityGroup"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_alignParentLeft="true"
+        android:layout_below="@id/priority"
+        android:orientation="horizontal"
+        android:text="@string/priority_string" >
+
+        <RadioButton
+            android:id="@+id/lowPriority"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/priority_low_string" />
+
+        <RadioButton
+            android:id="@+id/medPriority"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:checked="true"
+            android:text="@string/priority_medium_string" />
+
+        <RadioButton
+            android:id="@+id/highPriority"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/priority_high_string" />
+    </RadioGroup>
+
+    <!-- Time and Date -->
+
+    <TextView
+        android:id="@+id/time_and_date"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentLeft="true"
+        android:layout_below="@id/priorityGroup"
+        android:layout_marginTop="8dp"
+        android:text="@string/time_and_date_string"
+        android:textAppearance="?android:attr/textAppearanceLarge" />
+
+    <TextView
+        android:id="@+id/date"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentLeft="true"
+        android:layout_below="@+id/time_and_date"
+        android:layout_marginTop="8dp"
+        android:text="@string/no_date_set_string" />
+
+    <TextView
+        android:id="@+id/time"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentRight="true"
+        android:layout_below="@+id/time_and_date"
+        android:layout_marginTop="8dp"
+        android:text="@string/no_time_set_string" />
+
+    <Button
+        android:id="@+id/date_picker_button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentLeft="true"
+        android:layout_marginTop="8dp"
+        android:layout_below="@id/date"
+        android:text="@string/choose_date_string" />
+
+    <Button
+        android:id="@+id/time_picker_button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentRight="true"
+        android:layout_alignTop="@id/date_picker_button"
+        android:layout_below="@id/time"
+        android:layout_marginTop="8dp"
+        android:text="@string/choose_time_string" />
+
+    <!-- Buttons -->
+
+    <Button
+        android:id="@+id/cancelButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentBottom="true"
+        android:layout_alignParentLeft="true"
+        android:text="@string/cancel_string" />
+
+    <Button
+        android:id="@+id/resetButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentBottom="true"
+        android:layout_centerHorizontal="true"
+        android:text="@string/reset_string" />
+
+    <Button
+        android:id="@+id/submitButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentBottom="true"
+        android:layout_alignParentRight="true"
+        android:text="@string/submit_string" />
+
+</RelativeLayout>
\ No newline at end of file
diff --git a/labs/Lab4_UILabs/app/src/main/res/layout/footer_view.xml b/labs/Lab4_UILabs/app/src/main/res/layout/footer_view.xml
new file mode 100644
index 0000000000000000000000000000000000000000..311856f59340671e8a5173c8b67ce76c344c919e
--- /dev/null
+++ b/labs/Lab4_UILabs/app/src/main/res/layout/footer_view.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/footerView"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:gravity="center_horizontal"
+    android:text="@string/add_new_todo_item_string"
+    android:textSize="24sp" >
+
+</TextView>
\ No newline at end of file
diff --git a/labs/Lab4_UILabs/app/src/main/res/layout/todo_item.xml b/labs/Lab4_UILabs/app/src/main/res/layout/todo_item.xml
new file mode 100644
index 0000000000000000000000000000000000000000..44ef9fcf470283d7f30cd5a895fd5eaf4842f24b
--- /dev/null
+++ b/labs/Lab4_UILabs/app/src/main/res/layout/todo_item.xml
@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/RelativeLayout1"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical" >
+
+    <TextView
+        android:id="@+id/titleView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_alignParentLeft="true"
+        android:layout_alignParentTop="true"
+        android:textAppearance="?android:attr/textAppearanceLarge" >
+    </TextView>
+
+    <TextView
+        android:id="@+id/StatusLabel"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignBaseline="@+id/statusCheckBox"
+        android:layout_alignParentLeft="true"
+        android:layout_alignParentTop="true"
+        android:layout_marginTop="17dp"
+        android:text="@string/done_string" >
+    </TextView>
+
+    <CheckBox
+        android:id="@+id/statusCheckBox"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentTop="true"
+        android:layout_marginTop="52dp"
+        android:layout_toRightOf="@+id/StatusLabel" >
+    </CheckBox>
+
+    <TextView
+        android:id="@+id/PriorityLabel"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignBaseline="@+id/statusCheckBox"
+        android:layout_alignTop="@+id/StatusLabel"
+        android:layout_toLeftOf="@+id/priorityView"
+        android:text="@string/priority_string" >
+    </TextView>
+
+    <TextView
+        android:id="@+id/priorityView"
+        android:layout_width="50dip"
+        android:layout_height="wrap_content"
+        android:layout_alignBaseline="@+id/statusCheckBox"
+        android:layout_alignParentRight="true"
+        android:layout_alignTop="@+id/StatusLabel" >
+    </TextView>
+
+    <TextView
+        android:id="@+id/DateLabel"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentLeft="true"
+        android:layout_below="@+id/statusCheckBox"
+        android:text="@string/date_string" >
+    </TextView>
+
+    <TextView
+        android:id="@+id/dateView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignBaseline="@+id/DateLabel"
+        android:layout_toRightOf="@+id/DateLabel" >
+    </TextView>
+
+</RelativeLayout>
\ No newline at end of file
diff --git a/labs/Lab4_UILabs/app/src/main/res/values-sw600dp/dimens.xml b/labs/Lab4_UILabs/app/src/main/res/values-sw600dp/dimens.xml
new file mode 100644
index 0000000000000000000000000000000000000000..44f01db75f0fef18081132a9e86517f8d5efa8f6
--- /dev/null
+++ b/labs/Lab4_UILabs/app/src/main/res/values-sw600dp/dimens.xml
@@ -0,0 +1,8 @@
+<resources>
+
+    <!--
+         Customize dimensions originally defined in res/values/dimens.xml (such as
+         screen margins) for sw600dp devices (e.g. 7" tablets) here.
+    -->
+
+</resources>
diff --git a/labs/Lab4_UILabs/app/src/main/res/values-sw720dp-land/dimens.xml b/labs/Lab4_UILabs/app/src/main/res/values-sw720dp-land/dimens.xml
new file mode 100644
index 0000000000000000000000000000000000000000..d3a17b7ac019232caa63d0b0849f42f43be32646
--- /dev/null
+++ b/labs/Lab4_UILabs/app/src/main/res/values-sw720dp-land/dimens.xml
@@ -0,0 +1,8 @@
+<resources>
+
+    <!--
+         Customize dimensions originally defined in res/values/dimens.xml (such as
+         screen margins) for sw720dp devices (e.g. 10" tablets) in landscape here.
+    -->
+ 
+</resources>
diff --git a/labs/Lab4_UILabs/app/src/main/res/values/dimens.xml b/labs/Lab4_UILabs/app/src/main/res/values/dimens.xml
new file mode 100644
index 0000000000000000000000000000000000000000..0e9ce62a515ae5d1c761ff9bbad6b8291a65da36
--- /dev/null
+++ b/labs/Lab4_UILabs/app/src/main/res/values/dimens.xml
@@ -0,0 +1,5 @@
+<resources>
+
+    <!-- Default screen margins, per the Android Design guidelines. -->
+
+</resources>
diff --git a/labs/Lab4_UILabs/app/src/main/res/values/strings.xml b/labs/Lab4_UILabs/app/src/main/res/values/strings.xml
new file mode 100644
index 0000000000000000000000000000000000000000..a6e324c6d983b4ff744f859a1fdeced4bd1b6897
--- /dev/null
+++ b/labs/Lab4_UILabs/app/src/main/res/values/strings.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">UILabs</string>
+    <string name="done_string">Done:</string>
+    <string name="priority_string">Priority:</string>
+    <string name="date_string">Date:</string>
+    <string name="add_new_todo_item_string">Add New ToDo Item</string>
+    <string name="title_string">Title</string>
+    <string name="status_string">Status</string>
+    <string name="not_done_string">Not Done</string>
+    <string name="priority_low_string">Low</string>
+    <string name="priority_medium_string">Medium</string>
+    <string name="priority_high_string">High</string>
+    <string name="time_and_date_string">Time and Date</string>
+    <string name="no_date_set_string">0000&#8211;00&#8211;00</string>
+    <string name="no_time_set_string">00:00:00</string>
+    <string name="choose_date_string">Choose Date</string>
+    <string name="choose_time_string">Choose Time</string>
+    <string name="cancel_string">Cancel</string>
+    <string name="reset_string">Reset</string>
+    <string name="submit_string">Submit</string>
+    <string name="enter_title_string">Enter Title</string>
+
+</resources>
diff --git a/labs/Lab4_UILabs/build.gradle b/labs/Lab4_UILabs/build.gradle
new file mode 100644
index 0000000000000000000000000000000000000000..fde343b06a3fd82c93354eb609a9e5ec8148bb02
--- /dev/null
+++ b/labs/Lab4_UILabs/build.gradle
@@ -0,0 +1,18 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    ext.kotlin_version = '1.3.50'
+    repositories {
+        jcenter()
+        google()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.1.4'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+allprojects {
+    repositories {
+        jcenter()
+    }
+}
diff --git a/labs/Lab4_UILabs/gradle/wrapper/gradle-wrapper.jar b/labs/Lab4_UILabs/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000000000000000000000000000000000000..13372aef5e24af05341d49695ee84e5f9b594659
Binary files /dev/null and b/labs/Lab4_UILabs/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/labs/Lab4_UILabs/gradle/wrapper/gradle-wrapper.properties b/labs/Lab4_UILabs/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000000000000000000000000000000000000..4c568d1e0ba22aef3b2a20a1387f06f7cbb6bbff
--- /dev/null
+++ b/labs/Lab4_UILabs/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Mon Sep 24 19:29:38 EDT 2018
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
diff --git a/labs/Lab4_UILabs/gradlew b/labs/Lab4_UILabs/gradlew
new file mode 100755
index 0000000000000000000000000000000000000000..9d82f78915133e1c35a6ea51252590fb38efac2f
--- /dev/null
+++ b/labs/Lab4_UILabs/gradlew
@@ -0,0 +1,160 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+esac
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+    JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
diff --git a/labs/Lab4_UILabs/gradlew.bat b/labs/Lab4_UILabs/gradlew.bat
new file mode 100644
index 0000000000000000000000000000000000000000..8a0b282aa6885fb573c106b3551f7275c5f17e8e
--- /dev/null
+++ b/labs/Lab4_UILabs/gradlew.bat
@@ -0,0 +1,90 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windowz variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/labs/Lab4_UILabs/settings.gradle b/labs/Lab4_UILabs/settings.gradle
new file mode 100644
index 0000000000000000000000000000000000000000..e7b4def49cb53d9aa04228dd3edb14c9e635e003
--- /dev/null
+++ b/labs/Lab4_UILabs/settings.gradle
@@ -0,0 +1 @@
+include ':app'