crash with NoSuchMethodError after proguard with method references

Question

the source code before compile&proguard :

public class IntentSession extends BaseIntentSession {
    @Override
    public void onResume() {
        super         


        

Answer 1

after re-check carefully, i concluded it probably not a bug of proguard, only gradle.

first, i let the source code using general interface coding style :

mExecutor.exec(getIntent(), new MyInterface() {
    @Override
    public void execute() {
        finish();
    }
});

then i clean the build cache and rebuild :

./gradlew clean
./gradlew :app:assembleRelease

I perform the output release app and make it reach the problematic code, it work without crash.

this time i turn to method references :

mExecutor.exec(getIntent(), this::finish);

but i didn't clean the build cache before re-building :

./gradlew :app:assembleRelease

now re-perform with the crash happen :

05-22 11:35:33.870 D/AndroidRuntime(  631): Shutting down VM
05-22 11:35:37.470 E/AndroidRuntime(  631): FATAL EXCEPTION: main
05-22 11:35:37.470 E/AndroidRuntime(  631): Process: com.cmrobot.assistant, PID: 631
05-22 11:35:37.470 E/AndroidRuntime(  631): java.lang.NoSuchMethodError: com.session.a.finish
05-22 11:35:37.470 E/AndroidRuntime(  631):     at com.newsessions.b.executeDone(Unknown Source)
05-22 11:35:37.470 E/AndroidRuntime(  631):     at com.newsessions.base.a.a(BaseIntentExecutor.java:99)
05-22 11:35:37.470 E/AndroidRuntime(  631):     at com.newsessions.base.a.e(BaseIntentExecutor.java:76)
05-22 11:35:37.470 E/AndroidRuntime(  631):     at com.newsessions.base.a.a(BaseIntentExecutor.java:67)
05-22 11:35:37.470 E/AndroidRuntime(  631):     at com.newsessions.cmd.general.volume.VolumeChangeExecutor.b(VolumeChangeExecutor.java:28)
05-22 11:35:37.470 E/AndroidRuntime(  631):     at com.newsessions.cmd.general.volume.a.a(LowerVolumeExecutor.java:63)
05-22 11:35:37.470 E/AndroidRuntime(  631):     at com.newsessions.base.a.d(BaseIntentExecutor.java:44)
05-22 11:35:37.470 E/AndroidRuntime(  631):     at com.newsessions.base.b.run(Unknown Source)
05-22 11:35:37.470 E/AndroidRuntime(  631):     at android.os.Handler.handleCallback(Handler.java:733)
05-22 11:35:37.470 E/AndroidRuntime(  631):     at android.os.Handler.dispatchMessage(Handler.java:95)
05-22 11:35:37.470 E/AndroidRuntime(  631):     at android.os.Looper.loop(Looper.java:136)
05-22 11:35:37.470 E/AndroidRuntime(  631):     at android.app.ActivityThread.main(ActivityThread.java:5001)
05-22 11:35:37.470 E/AndroidRuntime(  631):     at java.lang.reflect.Method.invokeNative(Native Method)
05-22 11:35:37.470 E/AndroidRuntime(  631):     at java.lang.reflect.Method.invoke(Method.java:515)
05-22 11:35:37.470 E/AndroidRuntime(  631):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:829)
05-22 11:35:37.470 E/AndroidRuntime(  631):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:645)
05-22 11:35:37.470 E/AndroidRuntime(  631):     at dalvik.system.NativeStart.main(Native Method)

in order to confirm it is the build cache reason, i clean then re-build on the changed code basically :

./gradlew clean
./gradlew :app:assembleRelease

that crash gone in the afterword app.

i attempt to create a demonstrating project to prove this problem, but that project doesn't popup the crash, only in my productive project.