ArrayIndexOutOfBoundsException mentre respinge Snackbar/ViewDragHelper

Question

Dopo l'implementazione del nuovo Snackbar in alcune delle mie applicazioni, sto ricevendo il seguente errore:

java.lang.ArrayIndexOutOfBoundsException: length=1; index=1 at 
android.support.v4.widget.ViewDragHelper.shouldInterceptTouchEvent(SourceFile:1014) at 
android.support.design.widget.SwipeDismissBehavior.onInterceptTouchEvent(SourceFile:188) at 
android.support.design.widget.Snackbar$Behavior.onInterceptTouchEvent(SourceFile:659) at 
android.support.design.widget.Snackbar$Behavior.onInterceptTouchEvent(SourceFile:641) at 
android.support.design.widget.CoordinatorLayout.performIntercept(SourceFile:343) at 
android.support.design.widget.CoordinatorLayout.onInterceptTouchEvent(SourceFile:376) at 
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1827) at 
android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2241) at 
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1946) at 
android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2241) at 
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1946) at 
android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2241) at 
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1946) at 
android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2241) at 
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1946) at 
android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2241) at 
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1946) at 
android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2241) at 
android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1946) at 
com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1968) at 
com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1420) at 
android.app.Activity.dispatchTouchEvent(Activity.java:2428) at 
android.support.v7.internal.view.WindowCallbackWrapper.dispatchTouchEvent(SourceFile:59) at 
android.support.v7.internal.view.WindowCallbackWrapper.dispatchTouchEvent(SourceFile:59) at 
com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1916) at 
android.view.View.dispatchPointerEvent(View.java:7475) at 
android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3744) at 
android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3672) at 
android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4924) at 
android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4884) at 
android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5036) at 
android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:179) at 
android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method) at 
android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:171) at 
android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:5004) at 
android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:5058) at 
android.view.Choreographer$CallbackRecord.run(Choreographer.java:776) at 
android.view.Choreographer.doCallbacks(Choreographer.java:579) at 
android.view.Choreographer.doFrame(Choreographer.java:546) at 
android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:762) at 
android.os.Handler.handleCallback(Handler.java:725) at 
android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:153) at 
android.app.ActivityThread.main(ActivityThread.java:5299) at java.lang.reflect.Method.invokeNative(Native 
Method) at java.lang.reflect.Method.invoke(Method.java:511) 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) 

Sto usando la stessa messa a punto qui: https://github.com/chrisbanes/cheesesquare/blob/master/app/src/main/java/com/support/android/designlibdemo/MainActivity.java

public class MainActivity extends AppCompatActivity { 

    private Snackbar snackbar;  

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 
     setSupportActionBar(toolbar); 

     FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab); 
     fab.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 

       // if showing already, close 
       if (this.snackbar != null) { 
        this.snackbar.dismiss(); 
       } 

       // make new snackbar 
       this.snackbar = Snackbar.make(view, "Here's a Snackbar", Snackbar.LENGTH_LONG).show(); 


       // chris banes example 
       // Snackbar.make(view, "Here's a Snackbar", Snackbar.LENGTH_LONG).setAction("Action", null).show(); 

      } 
     }); 
    } 

    @Override 
    public void onPause() { 
     super.onPause(); 
     // dismiss when user clicks "home" 
     if (this.snackbar != null) { 
      this.snackbar.dismiss(); 
     } 
    } 
} 

Sommario:

• Sto usando il Snackbar
• Sto usando il CoodinartorLayout
• non sto usando i DrawerLayout

Problemi di Google:

• http://code.google.com/p/android/issues/detail?id=175501
• http://code.google.com/p/android/issues/detail?id=103888

In base alla riga android.support.v4.widget.ViewDragHelper.shouldInterceptTouchEvent(SourceFile:1014) at nell'eccezione, suppongo che abbia a che fare con il "respingimento" dello Snackbar?

Forse non dovrei dismiss il Snackbar in ? Ho usato per fare questo con Toast s.

Answer 1

Una soluzione che ho trovato era assicurarsi che non fosse "swipe-able" usando findViewById(android.R.id.content). Questa soluzione fondamentalmente "evita" e impedisce che si verifichi l'errore.

Snackbar.make(findViewById(android.R.id.content), "Hello!", Snackbar.LENGTH_LONG); 

dovrebbe essere fissato in 23.2.1: https://stackoverflow.com/a/36004008/950427