Mobile App Development 2022W Lecture 17

Video

Video from the lecture given on March 18, 2022 is now available:

• video
• auto-generated captions

Video is also available through Brightspace (Resources->Zoom Meetings (Recordings, etc.)->Cloud Recordings tab). Note that here you'll also see chat messages.

Notes

Lecture 17
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Midterm
 - still grading, sorry
 - will set up interviews once grades are made available
 - will post solutions at the same time
    - am making them up as I grade
    - want to point out concepts that are commonly missed

Application Icons (for launchers, etc
 - If you want to learn more, look up adaptive icons for Android

https://developer.android.com/guide/practices/ui_guidelines/icon_design_adaptive

 - Basic idea
    - you can import an SVG or PNG into Android Studio, it will
      convert it to drawable resource (probably a vector)
    - And then it will also generate all the versions

Activities are just classes that represent a set of functionality in Android
 - normally associated with a specific layout resource

Every activity in your app has to be declared in AndroidManifest.xml
 - and any activity that can receive an implicit intent must
   have an appropriate intent filter
 - you can always send an explicit intent to a designated activity class

Each activity is a whole screen
 - you can have activity fragments for portions of a screen that are reused

Intent documentation
 https://developer.android.com/reference/android/content/Intent.html
 https://developer.android.com/guide/components/intents-filters


After class:
 - finally got the web browser launching by
    - making sure I only sent the intent once using a boolean flag
    - changed the default browser to firefox (after installing firefox)
 - chrome just seems broken?  No idea