title: ANR Input dispatching timed out
body: <p><strong>ANR Input dispatching timed out (Waiting to send non-key event because the touched window has not finished processing certain input events that were delivered to it over 500.0ms ago. Wait queue length: 60. Wait queue head age: 8503.2ms.)</strong></p>
  
  <p>Hi! I'm getting this strange ANR-report from several users. Unfortunately, I have very limited knowledge about ANR-reports, and I'm hoping that someone can help me to understand what the cause of this could be</p>
  
  <pre><code>"main" prio=5 tid=1 Suspended
  | group="main" sCount=1 dsCount=0 obj=0x74a20f90 self=0x557fe6f9d0
  | sysTid=23849 nice=1 cgrp=top_visible sched=0/0 handle=0x7faf4f5000
  | state=S schedstat=( 79111961552 2206905376 39235 ) utm=7534 stm=377 core=7 HZ=100
  | stack=0x7fdaaf0000-0x7fdaaf2000 stackSize=8MB
  | held mutexes=
  at android.os.MessageQueue.removeMessages(MessageQueue.java:682)
  - locked &lt;0x08f02647&gt; (a android.os.MessageQueue)
  at android.os.Handler.removeMessages(Handler.java:652)
  at android.view.Choreographer.removeCallbacksInternal(Choreographer.java:418)
  - locked &lt;0x0bd41e74&gt; (a java.lang.Object)
  at android.view.Choreographer.removeCallbacks(Choreographer.java:406)
  at android.view.View.removeCallbacks(View.java:13179)
  at android.support.v4.widget.aa.a(unavailable:-1)
  at android.support.v4.widget.DrawerLayout.a(unavailable:-1)
  at android.support.v4.widget.DrawerLayout.onInterceptTouchEvent(unavailable:-1)
  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2108)
  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2525)
  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2525)
  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2525)
  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2525)
  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2525)
  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2525)
  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2525)
  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2254)
  at com.android.internal.policy.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2461)
  at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1777)
  at android.app.Activity.dispatchTouchEvent(Activity.java:2865)
  at android.support.v7.view.n.dispatchTouchEvent(unavailable:-1)
  at android.support.v7.view.n.dispatchTouchEvent(unavailable:-1)
  at com.android.internal.policy.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2422)
  at android.view.View.dispatchPointerEvent(View.java:9610)
  at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4436)
  at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4302)
  at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3836)
  at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3889)
  at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3855)
  at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3981)
  at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3863)
  at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4038)
  at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3836)
  at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3889)
  at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3855)
  at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3863)
  at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3836)
  at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:6135)
  at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:6109)
  at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:6070)
  at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:6251)
  at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:192)
  at android.os.MessageQueue.nativePollOnce(Native method)
  at android.os.MessageQueue.next(MessageQueue.java:330)
  at android.os.Looper.loop(Looper.java:137)
  at android.app.ActivityThread.main(ActivityThread.java:5546)
  at java.lang.reflect.Method.invoke!(Native method)
  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:794)
  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:684)
  </code></pre>