我的自定义视图中有这个方法,它扩展了FrameLayout
:
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
int currentItem = vp.getCurrentItem();
if (inDragPanelZone(currentItem, ev.getX(), ev.getY()) && ev.getAction() == MotionEvent.ACTION_DOWN) {
if (!shouldAllowPaging()) {
return true;
}
vp.setPagingEnabled(true);
}
return super.dispatchTouchEvent(ev);
}
偶尔 - 我收到以下异常:
java.lang.IllegalArgumentException: pointerIndex out of range
at android.view.MotionEvent.nativeGetAxisValue(Native Method)
at android.view.MotionEvent.getX(MotionEvent.java:1995)
at android.support.v4.view.MotionEventCompatEclair.getX(MotionEventCompatEclair.java:32)
at android.support.v4.view.MotionEventCompat$EclairMotionEventVersionImpl.getX(MotionEventCompat.java:86)
at android.support.v4.view.MotionEventCompat.getX(MotionEventCompat.java:210)
at android.support.v4.view.ViewPager.onTouchEvent(ViewPager.java:1734)
at android.view.View.dispatchTouchEvent(View.java:5710)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1951)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1712)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1957)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1726)
at MyView.dispatchTouchEvent(DraggablePane.java:176)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1957)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1726)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1957)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1726)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1957)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1726)
at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1918)
at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1377)
at android.app.Activity.dispatchTouchEvent(Activity.java:2391)
at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1866)
at android.view.View.dispatchPointerEvent(View.java:5890)
at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3077)
at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2619)
at android.view.ViewRootImpl.processInputEvents(ViewRootImpl.java:983)
at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2628)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4512)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:794)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:561)
at dalvik.system.NativeStart.main(Native Method)
我也尝试过使用onInterceptTouchEvent()
并得到了同样的例外。
这是一个额外的堆栈跟踪:
java.lang.IllegalArgumentException: pointerIndex out of range
at android.view.MotionEvent.nativeGetAxisValue(Native Method)
at android.view.MotionEvent.getX(MotionEvent.java:2013)
at android.support.v4.view.MotionEventCompatEclair.getX(MotionEventCompatEclair.java:32)
at android.support.v4.view.MotionEventCompat$EclairMotionEventVersionImpl.getX(MotionEventCompat.java:86)
at android.support.v4.view.MotionEventCompat.getX(MotionEventCompat.java:210)
at android.support.v4.view.ViewPager.onTouchEvent(ViewPager.java:1734)
at android.view.View.dispatchTouchEvent(View.java:5724)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1964)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1725)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1970)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1739)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1970)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1739)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1970)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1739)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1970)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1739)
at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2071)
at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1405)
at android.app.Activity.dispatchTouchEvent(Activity.java:2426)
at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2019)
at android.view.View.dispatchPointerEvent(View.java:5904)
at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3155)
at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2670)
at android.view.ViewRootImpl.processInputEvents(ViewRootImpl.java:1000)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1014)
at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2644)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4517)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:993)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:760)
at dalvik.system.NativeStart.main(Native Method)