NoClassDefFoundError: android.support.v7.internal.view.menu.MenuBuilder

Question

There is an issue with the Android appcompat v7 library on Samsung devices running Android 4.2. I keep getting crashes with the following stack trace in my Developer Console:

java.lang.NoClassDefFoundError: android.support.v7.internal.view.menu.MenuBuilder     at android.support.v7.widget.PopupMenu.<init>(PopupMenu.java:66)     at com.[my-package-name].CustomActivity$5.onClick(CustomActivity.java:215)     at android.view.View.performClick(View.java:4222)     at android.view.View$PerformClick.run(View.java:17620)     at android.os.Handler.handleCallback(Handler.java:800)     at android.os.Handler.dispatchMessage(Handler.java:100)     at android.os.Looper.loop(Looper.java:194)     at android.app.ActivityThread.main(ActivityThread.java:5391)     at java.lang.reflect.Method.invokeNative(Native Method)     at java.lang.reflect.Method.invoke(Method.java:525)     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)     at dalvik.system.NativeStart.main(Native Method) 

This is line 215 of CustomActivity.java:

PopupMenu popup = new PopupMenu(CustomActivity.this, mImageViewMenu); 

The crashes come from an array of devices, but always Samsung, and always Android 4.2.

A quick web search leads me to believe that many people have the same issue, some of the steps I have tried to solve the issue are:

• Check the Android project properties, make sure the appcompat library is added properly.
• Check the Java Build Path Order and Export project properties, make sure Android Dependencies and Android Private Libraries is checked.
• Confirm the class is included in the library (android.support.v7.internal.view.menu.MenuBuilder).
• Confirm R.java is located in gen directory for android.support.v7.appcompat.
• Confirm the AppCompat theme is included in the Manifest.xml activity.
• Clean and rebuild project.

Despite these steps, and despite it working on all other devices and Android versions the crash reports still come through.

Answer 1

EDIT:

The solution that worked for me was (Using Proguard) to replace this:

-keep class android.support.v4.** { *; }  -keep interface android.support.v4.** { *; }  -keep class android.support.v7.** { *; } -keep interface android.support.v7.** { *; } 

with this:

# Allow obfuscation of android.support.v7.internal.view.menu.** # to avoid problem on Samsung 4.2.2 devices with appcompat v21 # see https://code.google.com/p/android/issues/detail?id=78377 -keep class !android.support.v7.internal.view.menu.**,android.support.** {*;} 

Credit goes to the google group, #138.

Old answer (Temporary Workaround): It happens in a project where I use an spinner in the ActionBar. My solution was to check for those conditions and change the app flow:

public static boolean isSamsung_4_2_2() {     String deviceMan = Build.MANUFACTURER;     String deviceRel = Build.VERSION.RELEASE;     return "samsung".equalsIgnoreCase(deviceMan) && deviceRel.startsWith("4.2.2"); } 

Then in the activity's onCreate method:

if (isSamsung_4_2_2()) {     setContentView(R.layout.activity_main_no_toolbar); } else {     setContentView(R.layout.activity_main); } 

As pointed out this is not a definitive solution, it is just a way to allow users to have access to limited functionality while a more permanent solution is found.

Answer 2

As #150 from google groups said

Because careful with -keep class !android.support.v7.internal.view.menu.**. There are a number of classes in there which are referenced from the appcompat's resources.

The better solution is add the following lines instead:

-keep class !android.support.v7.internal.view.menu.*MenuBuilder*, android.support.v7.** { *; } -keep interface android.support.v7.** { *; }