NOTE THAT THIS IS AN EVOLVING DOCUMENT and will surely change to
incorporate more information and hints as the two weeks go by. UPDATE
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@@ -20,6 +20,13 @@ running version of this app:
## Tasks
They overall task is to build a cycle-tracking application that uses the GPS
receiver built in to your phone to record a track of positions that can later
be loaded and viewed. Save your recorded tracks to a file with extension
`.gpx436`. Clicking on a saved track in the document browser results in the
saved track being displayed with an approproiate zoom level. You do not need
allow tracks to be edited.
The following is a suggested series of steps for you to take, together
with approximate points that each step will be worth. You can ignore
all this and just emulate the first video above. Doing that gets you
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@@ -30,7 +37,6 @@ building this app methodically.
-Emulate the functionality of the [Circles](https://sedna.cs.umd.edu/436clips/circles.mp4) app from 4/7.
In your version:
- the browser should work,
- "+" brings up another view controller that allow you to visibly
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@@ -117,6 +123,16 @@ struct GPXTrack : Codable {
[This](assign4Example.gpx436) is an example `GPXTrack` using the default JSON
serialization to put to a file (use a text editor to look at).
## Notes
- Using a custom renderer results in continual "Compiler error: Invalid
library file" messages. This appears to be a recent [Xcode issue](https://stackoverflow.com/questions/58445093/compiler-error-invalid-library-file-corelocation) and can make debugging with print statements very difficult.
- Simulate GPS through the debugger's "Features/Location/.." menu.
- When stopping, and then starting tracking again, you often get a
single old location point in the simulator. This does not happen
when running on a phone, but I deal with it by tossing the first
location I receive after starting tracking.
## Additional Task, and Extra Credit
Pick one or two of the tasks below for the last 10 points of this project.
