Android Proguard: Release build Force Close

Question

I generated release build by enabling minifyEnabled property and when I try to run the release build, it force closes with following log. Please help me to debug it

java.lang.NullPointerException
        at MYPACKAGENAME.MainActivity.onCreateOptionsMenu(Unknown Source)
        at android.app.Activity.onCreatePanelMenu(Activity.java:2538)
        at android.support.v4.app.i.onCreatePanelMenu(Unknown Source)
        at android.support.v7.internal.view.j.onCreatePanelMenu(Unknown Source)
        at android.support.v7.app.ac.onCreatePanelMenu(Unknown Source)
        at android.support.v7.internal.view.j.onCreatePanelMenu(Unknown Source)
        at android.support.v7.internal.a.b.f(Unknown Source)
        at android.support.v7.internal.a.b$1.run(Unknown Source)
        at android.os.Handler.handleCallback(Handler.java:733)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:136)
        at android.app.ActivityThread.main(ActivityThread.java:5001)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
        at dalvik.system.NativeStart.main(Native Method)

This is my code for method onCreateOptionsMenu

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.menu_main, menu);
    //Set up ShareActionProvider's default share intent
    MenuItem shareItem = menu.findItem(R.id.action_share_main);
    mShareActionProvider = (ShareActionProvider) MenuItemCompat.getActionProvider(shareItem);
    mShareActionProvider.setShareIntent(getDefaultIntent());

    return super.onCreateOptionsMenu(menu);
}

Answer 1

The problem is that ShareActionProvider is being stripped/obfuscated, but the support library needs it to remain as-is.

Add this line to your proguard configuration, and you should be set:

-keep class android.support.v7.widget.ShareActionProvider { *; }