Android Studio steps into wrong sdk source

Question

I've got the following build.gradle settings.

compileSdkVersion 21
buildToolsVersion '21.1.1'

defaultConfig {
    minSdkVersion 18
    targetSdkVersion 21
}

The problem is that when I step into Android SDK source on an KitKat device (19 on Genymotion or Device), it still insists on stepping into Android-21 source instead of 19.

Changing any of the above settings simply breaks the compilation of my app since I have v21 code. All 19 calls are protected properly and the code works on 19, just the source code linkup is incorrect.

Cheers in advance Stack Overflow brothers and sisters!

Answer 1

Android Studio 2.2 fixes it (mostly), and will jump to sources of API level that corresponds to the device that you're actually running on (as long as you have those sources installed). It was announced here.

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Although the fix in Android Studio 2.2 works for public/standard builds, if the device is using a custom build (ie they made some changes to parts of the framework and assigned it a proprietary build id) then the 'fix' will not find the most closely matching source. The following technique is useful to get a version of the source that more closely matches the corresponding API level:

1. Compile the application without any changes.
2. Launch the application in Debug mode (and optionally break on breakpoint).
3. Go to File > Project Structure, find your app module (or/and optionally, any other modules) and change the Compile Sdk Version to one that matches the device you're debugging on (i.e. 19).
4. Step into the framework code - it should step into SDK 19 sources.

Warning: This causes Studio to sync and reevaluate your code and may cause problems. So changing this temporarily may get you the right source code, but you may have to change it back to build the next time. (as @Null Pointer points out) This is an imperfect, but useful technique.

Answer 2

As was mentioned in another answer, it was fixed in Android Studio 2.2 (bug report).

However, it still wasn't working for me even in Android Studio 3.0 It started working only after I checked "Show alternative source switcher" in Settings.

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