added Lab7_Alarms student distribution

Lab7_Alarms/.gitignore

+# 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

Lab7_Alarms/app/build.gradle

+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 26
+    buildToolsVersion "26.0.1"
+
+    defaultConfig {
+        applicationId "course.labs.alarmslab"
+        minSdkVersion 21
+        targetSdkVersion 26
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
+        }
+    }
+}
+
+dependencies {
+    compile 'com.android.support:support-v4:26.0.1'
+}

Lab7_Alarms/app/src/main/AndroidManifest.xml

+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="course.labs.alarmslab">
+
+    <uses-permission android:name="android.permission.VIBRATE" />
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@android:style/Theme.Holo.Light">
+        <activity
+            android:name="course.labs.alarmslab.AlarmCreateActivity"
+            android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+        <service android:name=".AlarmTweetService"></service>
+
+    </application>
+
+</manifest>

Lab7_Alarms/app/src/main/java/course/labs/alarmslab/AlarmCreateActivity.java

+package course.labs.alarmslab;
+
+import android.app.Activity;
+import android.app.AlarmManager;
+import android.app.PendingIntent;
+import android.content.Intent;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.View;
+import android.widget.EditText;
+
+public class AlarmCreateActivity extends Activity {
+
+    // TODO look at these class/instance variables and see if you could have come up with them
+    // on your own.
+
+	public static final String TWEET_STRING = "TWEET";
+	private AlarmManager mAlarmManager;
+
+	private static final String TAG = "AlarmCreateActivity";
+	private EditText mTweetTextView, mDelayTextView;
+	private int mID;
+
+	@Override
+	protected void onCreate(Bundle savedInstanceState) {
+
+        // TODO create reference to ALARM_SERVICE as well as locate necessary text views
+
+	}
+
+	public void set(View v) {
+
+		String tweetText = mTweetTextView.getText().toString();
+		Long delay = Integer.parseInt(mDelayTextView.getText().toString()) * 1000L;
+
+        // TODO create Intents for the alarm service. Additionally you will need to create a
+        // pending intent that will use the original intent you create to start the AlarmTweetService.
+        // Use the PendingIntent.getService() method. Be aware you will need to pass a unique value
+        // for the request code (why?) as well as the flag PendingIntent.FLAG_ONE_SHOT. Why? Could
+        // be possible midterm questions
+
+
+
+
+
+		// TODO make log statement that tweet was sent to AlarmTweetService
+
+
+        // TODO use AlarmManager set method to set Alarm
+
+	}
+
+	public void clear(View v) {
+        // TODO clear views
+
+	}
+}

Lab7_Alarms/app/src/main/java/course/labs/alarmslab/AlarmTweetService.java

+package course.labs.alarmslab;
+
+import android.app.Service;
+import android.content.Intent;
+import android.os.AsyncTask;
+import android.os.IBinder;
+import android.util.Base64;
+import android.util.Log;
+import android.widget.Toast;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.OutputStreamWriter;
+import java.io.UnsupportedEncodingException;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLEncoder;
+import java.security.InvalidKeyException;
+import java.security.Key;
+import java.security.NoSuchAlgorithmException;
+import java.security.SecureRandom;
+
+import javax.crypto.Mac;
+import javax.crypto.spec.SecretKeySpec;
+import javax.net.ssl.HttpsURLConnection;
+
+public class AlarmTweetService extends Service {
+
+    // Notification ID to allow for future updates
+    private static final String TAG = "AlarmTweetService";
+
+    // TODO -- Pick one of the following user accounts. Change the
+    // CONSUMER_KEY, CONSUMER_SECRET, ACCESS_TOKEN, and ACCESS_TOKEN_SECRET
+    // to the values for your account
+
+    // http://www.twitter.com/CMSC436Tester
+
+    // Consumer key: S2xDEU4mJyWKEsMEN9c3g
+    // Consumer secret: Pz7gH6S4ReftwuKVYEmkVW6TqImoIgbEWE9AFeDBWRc
+    //
+    // Access Token: 2151769766-ce3mtIH2bDEY8PZy73BKULWFfBqVnx8xHWeYvkY
+    // Access Token Secret: W7qEJxvEiWhqQmCuvFbKK6emg0cMqf8SxuABc3N33tz5w
+
+    // http://www.twitter.com/CMSC436Tester2
+
+    // Consumer key: kCgvgTnJ5nDuJmZrV5kTXA
+    // Consumer secret: B4qDeJOClLCw67w7G08B4FUXBpS0P3qkX0WSbo0Bjgo
+    //
+    // Access Token: 2151777866-VTX8oVguPz6xoTqPpQnDRqJJ7DhYRgkowCn9MCv
+    // Access Token Secret: H3M8VGanx6euQS336BLqItB7saTy7K89CpxlQ4PqpTkQC
+    //
+
+    // http://www.twitter.com/CMSC436Tester3
+
+    // Consumer key: qUkfkuK8xKhxGq3BztWlLw
+    // Consumer secret: cck2aY4390u8Z9hFRfE7TSRYrATUQG0MkB61xEErDg
+    //
+    // Access Token: 2151782420-mHjtmHTQiE4L6nDgIhMbzfDYtjE6JFNK2Bm04nq
+    // Access Token Secret: Wy9SK20WbZnDjXlxBH1gxQRKNCz9Pi4EoMCyJPGrjjJVY
+
+    // Consumer Key
+    private final static String CONSUMER_KEY = "S2xDEU4mJyWKEsMEN9c3g";
+
+    // Consumer Secret
+    private final static String CONSUMER_SECRET = "Pz7gH6S4ReftwuKVYEmkVW6TqImoIgbEWE9AFeDBWRc";
+
+    // Access Token
+    private static String ACCESS_TOKEN = "2151769766-ce3mtIH2bDEY8PZy73BKULWFfBqVnx8xHWeYvkY";
+
+    // Access Token Secret
+    private static String ACCESS_TOKEN_SECRET = "W7qEJxvEiWhqQmCuvFbKK6emg0cMqf8SxuABc3N33tz5w";
+
+    // networking variables
+    private static SecureRandom mRandom;
+
+    public AlarmTweetService() {
+        super();
+    }
+
+    @Override
+    public int onStartCommand(Intent intent, int flags, int startId) {
+
+        if (intent.getExtras() != null){
+
+            mRandom = new SecureRandom();
+
+            new NetworkingTask().execute(intent.getExtras().getString(AlarmCreateActivity.TWEET_STRING));
+
+        }
+
+        return START_STICKY;
+    }
+
+    public class NetworkingTask extends AsyncTask<String, Void, Boolean> {
+
+        @Override
+        protected Boolean doInBackground(String... args) {
+            try {
+                return postTweet(args[0]);
+            } catch (IOException e) {
+                e.printStackTrace();
+                Log.d(TAG, "COULDN'T GET IT");
+            }
+            return false;
+        }
+
+        @Override
+        protected void onPostExecute(Boolean result) {
+            Toast.makeText(getApplicationContext(),
+                    "The Tweet was submitted with result:" + result,
+                    Toast.LENGTH_LONG).show();
+        }
+
+    }
+
+    private static boolean postTweet(String status) throws IOException {
+        HttpsURLConnection connection = null;
+        String nonce = newNonce();
+        String timestamp = timestamp();
+
+        try {
+
+            // URL for updating the Twitter status
+            URL url = new URL(
+                    "https://api.twitter.com/1.1/statuses/update.json");
+
+            //TODO - make connection into an HttpsUrlConnection for url above
+            connection = (HttpsURLConnection) url.openConnection();
+
+            connection.setDoOutput(true);
+            connection.setDoInput(true);
+
+            connection.setRequestMethod("POST");
+
+            connection.setRequestProperty("Host", "api.twitter.com");
+            connection.setRequestProperty("User-Agent", "TwitterNetworkingLab");
+            connection.setRequestProperty("Authorization", "OAuth "
+                    + "oauth_consumer_key=\"" + CONSUMER_KEY + "\", "
+                    + "oauth_nonce=\"" + nonce + "\", " + "oauth_signature=\""
+                    + signature(status, nonce, timestamp) + "\", "
+                    + "oauth_signature_method=\"HMAC-SHA1\", "
+                    + "oauth_timestamp=\"" + timestamp + "\", "
+                    + "oauth_token=\"" + ACCESS_TOKEN + "\", "
+                    + "oauth_version=\"1.0\"");
+            connection.setRequestProperty("Content-Type",
+                    "application/x-www-form-urlencoded");
+
+            Log.d(TAG, connection.getRequestProperties().toString());
+
+            // This POST request needs a body
+            // This is how you write to the body
+
+            OutputStreamWriter out = new OutputStreamWriter(
+                    connection.getOutputStream());
+
+            // Twitter status is added here.
+
+            out.write("status=" + URLEncoder.encode(status, "UTF-8"));
+
+            out.flush();
+            out.close();
+
+            String test = "status=" + URLEncoder.encode(status, "UTF-8");
+            Log.i(TAG, test);
+
+            JSONObject response = new JSONObject(read(connection));
+
+            if (response != null) {
+                Log.d(TAG, "The tweet seems to have been posted successfully!");
+            }
+
+            return response != null;
+
+        } catch (MalformedURLException e) {
+            throw new IOException("Invalid URL.", e);
+        } catch (JSONException e) {
+            throw new IOException("Invalid response from Twitter", e);
+        } finally {
+            if (connection != null) {
+                connection.disconnect();
+            }
+        }
+    }
+
+    private static String read(HttpsURLConnection connection) {
+        StringBuffer stringBuffer = new StringBuffer();
+        try {
+            BufferedReader reader = new BufferedReader(new InputStreamReader(
+                    connection.getInputStream()));
+            String line = new String();
+            while ((line = reader.readLine()) != null) {
+                stringBuffer.append(line + "\n");
+            }
+        } catch (IOException e) {
+            try {
+                Log.i(TAG,
+                        "Error reponse from twitter: "
+                                + connection.getResponseMessage());
+            } catch (IOException e1) {
+                e1.printStackTrace();
+            }
+            stringBuffer.append("Failed");
+        }
+        return stringBuffer.toString();
+    }
+
+    private static String newNonce() {
+        byte[] random = new byte[32];
+        mRandom.nextBytes(random);
+
+        String nonce = Base64.encodeToString(random, Base64.NO_WRAP);
+        nonce = nonce.replaceAll("[^a-zA-Z0-9\\s]", "");
+        return nonce;
+
+    }
+
+    private static String timestamp() {
+        Long time = System.currentTimeMillis() / 1000L;
+        return time.toString();
+    }
+
+    private static String signature(String status, String nonce,
+                                    String timestamp) {
+        String output = "";
+        // Obviously you can use a TreeMap with concurrency to implement this,
+        // but this way you can see what is going on
+        try {
+            // Gather all parameters used for the status post
+            String signatureBaseString = "";
+            String parameterString = "";
+            String signingKey = "";
+            String signature = "";
+
+            String httpMethod = "POST";
+            String baseURL = "https://api.twitter.com/1.1/statuses/update.json";
+
+            String consumerKey = CONSUMER_KEY;
+            String encMethod = "HMAC-SHA1";
+            String token = ACCESS_TOKEN;
+            String version = "1.0";
+
+            String kStatus = "status";
+            String kKey = "oauth_consumer_key";
+            String kNonce = "oauth_nonce";
+            String kSigMeth = "oauth_signature_method";
+            String kTimestamp = "oauth_timestamp";
+            String kToken = "oauth_token";
+            String kVersion = "oauth_version";
+
+            // encode the parameters put into the http request header separately
+            consumerKey = URLEncoder.encode(consumerKey, "UTF-8");
+            nonce = URLEncoder.encode(nonce, "UTF-8");
+            encMethod = URLEncoder.encode(encMethod, "UTF-8");
+            timestamp = URLEncoder.encode(timestamp, "UTF-8");
+            token = URLEncoder.encode(token, "UTF-8");
+            version = URLEncoder.encode(version, "UTF-8");
+            status = URLEncoder.encode(status, "UTF-8");
+            status = status.replace("+", "%20"); // URLEncoder encodes " " to
+            // "+", which is incorrect
+            // for twitter encoding
+
+            kKey = URLEncoder.encode(kKey, "UTF-8");
+            kNonce = URLEncoder.encode(kNonce, "UTF-8");
+            kSigMeth = URLEncoder.encode(kSigMeth, "UTF-8");
+            kTimestamp = URLEncoder.encode(kTimestamp, "UTF-8");
+            kToken = URLEncoder.encode(kToken, "UTF-8");
+            kVersion = URLEncoder.encode(kVersion, "UTF-8");
+            kStatus = URLEncoder.encode(kStatus, "UTF-8");
+
+            // append the parameters together with = and &
+            parameterString = kKey + "=" + consumerKey + "&" + kNonce + "="
+                    + nonce + "&" + kSigMeth + "=" + encMethod + "&"
+                    + kTimestamp + "=" + timestamp + "&" + kToken + "=" + token
+                    + "&" + kVersion + "=" + version + "&" + kStatus + "="
+                    + status;
+
+            // build the signature base string
+            signatureBaseString += httpMethod;
+            signatureBaseString += "&";
+            baseURL = URLEncoder.encode(baseURL, "UTF-8");
+            signatureBaseString += baseURL;
+            signatureBaseString += "&";
+            parameterString = URLEncoder.encode(parameterString, "UTF-8");
+            signatureBaseString += parameterString;
+            Log.d(TAG, signatureBaseString);
+
+            // generate the HMAC-SHA1 signing key with the application and
+            // account secrets
+            signingKey = URLEncoder.encode(CONSUMER_SECRET, "UTF-8") + "&"
+                    + URLEncoder.encode(ACCESS_TOKEN_SECRET, "UTF-8");
+
+            // this should be self explanatory
+            byte[] bytes = signingKey.getBytes();
+            Key key = new SecretKeySpec(bytes, 0, bytes.length, "HmacSHA1");
+            Mac mac = Mac.getInstance("HmacSHA1");
+            mac.init(key);
+            byte[] signatureBytes = mac.doFinal(signatureBaseString.getBytes());
+            signature = Base64.encodeToString(signatureBytes, Base64.NO_WRAP);
+            signature = URLEncoder.encode(signature, "UTF-8");
+
+            output = signature;
+
+        } catch (UnsupportedEncodingException e) {
+            Log.d(TAG, "Error encoding parameters");
+            e.printStackTrace();
+        } catch (InvalidKeyException e) {
+            Log.d(TAG, "Error encrypting signature");
+            e.printStackTrace();
+        } catch (NoSuchAlgorithmException e) {
+            Log.d(TAG, "Invalid algorithm for signature");
+            e.printStackTrace();
+        }
+        return output;
+    }
+
+    @Override
+    public IBinder onBind(Intent intent) {
+        return null;
+    }
+
+}
\ No newline at end of file

Lab7_Alarms/app/src/main/res/layout/main.xml

+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingRight="@dimen/activity_vertical_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    tools:context=".AlarmCreateActivity" >
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/title"
+        android:paddingBottom="5dp"
+        android:textSize="20sp" />
+
+    <EditText
+        android:id="@+id/text"
+        android:layout_width="match_parent"
+        android:layout_height="50dp"
+        android:hint="@string/placeholder"
+        android:inputType="textMultiLine" >
+
+        <requestFocus />
+    </EditText>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" 
+        android:paddingTop="25dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/prompt" />
+
+        <EditText
+            android:id="@+id/time"
+            android:layout_width="15dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:ems="10"
+            android:inputType="number"
+            android:minLines="1"
+            android:text="@string/placeholder2" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/prompt2" />
+    </LinearLayout>
+    
+    <LinearLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center_horizontal"
+        android:orientation="horizontal"
+        android:paddingTop="25dp" >
+	    
+	    <Button
+	        android:id="@+id/set"
+	        style="@android:attr/buttonBarButtonStyle"
+	        android:layout_width="wrap_content"
+	        android:layout_height="wrap_content"
+	        android:text="@string/button"
+	        android:onClick="set" />
+	    
+	    <Button
+	        android:id="@+id/clear"
+	        style="@android:attr/buttonBarButtonStyle"
+	        android:layout_width="wrap_content"
+	        android:layout_height="wrap_content"
+	        android:text="@string/clear"
+	        android:onClick="clear" />
+	
+	</LinearLayout>
+
+</LinearLayout>

Lab7_Alarms/app/src/main/res/menu/alarm_create.xml

+<menu xmlns:android="http://schemas.android.com/apk/res/android" >
+
+    <item
+        android:id="@+id/action_settings"
+        android:orderInCategory="100"
+        android:showAsAction="never"
+        android:title="@string/action_settings"/>
+
+</menu>

Lab7_Alarms/app/src/main/res/values/dimens.xml

+<resources>
+
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+
+</resources>

Lab7_Alarms/app/src/main/res/values/strings.xml

+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <string name="app_name">AlarmsLab</string>
+    <string name="action_settings">Settings</string>
+    <string name="title">Change your Twitter Status</string>
+    <string name="placeholder">tweet goes here.</string>
+    <string name="prompt">To post in</string>
+    <string name="prompt2">seconds</string>
+    <string name="placeholder2">5</string>
+    <string name="button">Submit</string>
+    <string name="clear">Clear</string>
+
+</resources>

Lab7_Alarms/app/src/main/res/values/styles.xml

+<resources>
+
+    <!--
+        Base application theme, dependent on API level. This theme is replaced
+        by AppBaseTheme from res/values-vXX/styles.xml on newer devices.
+    -->
+    <style name="AppBaseTheme" parent="android:Theme.Light">
+        <!--
+            Theme customizations available in newer API levels can go in
+            res/values-vXX/styles.xml, while customizations related to
+            backward-compatibility can go here.
+        -->
+    </style>
+
+    <!-- Application theme. -->
+    <style name="AppTheme" parent="AppBaseTheme">
+        <!-- All customizations that are NOT specific to a particular API-level can go here. -->
+    </style>
+
+</resources>

Lab7_Alarms/build.gradle

+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        jcenter()
+        google()
+        maven {
+            url "https://maven.google.com"
+        }
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:2.3.3'
+    }
+}
+
+allprojects {
+    repositories {
+        jcenter()
+        google()
+    }
+}

Lab7_Alarms/gradle/wrapper/gradle-wrapper.properties

+#Thu Oct 05 22:40:13 EDT 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip