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I am new to android as well as android studio. From my experience in visual studio, when we test the .exe in another machine we copy the release folder and .exe.
But in android studio I am seeing my colleagues test the debug apk by copying and deploying in other systems using USB drive. seems working also. May I know what is the consequence of deploying that version? Is the release version relevant only for a play store purpose?
What is the technical difference/consequence other than that debug version contains debug information which may makes it slow or bulky?
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Major differences are the debug apk and the release apk: For debug builds the apk will be signed with the default debug signing keys with debug flag enabled. For release apk you will have to explicitly specify the apk to sign with and the debug flag will be turned off so that it cannot be debugged.
By default, Debug includes debug information in the compiled files (allowing easy debugging) while Release usually has optimizations enabled. As far as conditional compilation goes, they each define different symbols that can be checked in your program, but they are language-specific macros.
The unaligned apk is just an intermediate apk. First, the unaligned apk is generated. Then, the unaligned apk gets aligned and produces the aligned apk which is the app-debug.
With a release, you can manage your app's Android App Bundle (or APK for apps created before August 2021) and then roll out your app to a specific track.
Major differences are the debug flag and the signing keys:
For debug builds the apk will be signed with the default debug signing keys with debug flag enabled.
For release keys you will have to explicitly specify the keys to sign with and the debug flag will be turned off so that it cannot be debugged.
Proguard can be turned on for release builds. (also for debug builds but not advised). This step needs to be done explicitly and is false by default.
Note: these things can be altered in your build.config and you can choose what ever permutation and combination you wish.
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