Why do developers often put app initialization code in the Application class?

What folder should you use for your app's launcher icons?

When should you use the androidTest directory to store your test classes?

Given an APK named app-internal-debug.apk produced from the build process, which statement is likely to be true?

When attempting to build your project, what might the following error indicate? Conversion to Dalvik format filed: Unable to execute dex: method ID not in [0, 0xffff]: 65536

Which statement, in build.gradle file, correctly denotes that the corresponding module is an Android library module?

Why is it problematic to define sizes using pixels on Android?

How would you retrieve the value of a user's email from SharedPreferences while ensuring that the returned value is not null?

IF the main thread is blocked for too long, the system displays the _ dialog?

Given the definition below. how would you get access a TextView with an ID of text_home contained in thr layout file of a Fragment class?

What allows you to properly restore a user's state when an activity is restarted?