如何将运动从一个viewpager传递到另一个viewpager？

Question

我希望2个浏览器同时滚动。如果我滚动一个，则会模仿它。 OnPageScrolledListener具有所有必需的数据，但我没有看到它插入的位置。

new OnPageChangeListener() { 

     @Override public void onPageScrolled(int page, float scale, int offset) { 
     } 

     @Override public void onPageSelected(int i) { 
     setIndicators(i); 
     } 

     @Override public void onPageScrollStateChanged(int i) { 

     } 
    } 

我试图复制motioneven，但它总是火IlligalStateException

pager.setOnTouchListener(new View.OnTouchListener() { 
     @Override public boolean onTouch(View v, MotionEvent event) { 
     pagerInner.dispatchTouchEvent(event); 
     return false; 
     } 
    }); 
java.lang.IllegalArgumentException: pointerIndex out of range 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.MotionEvent.nativeGetAxisValue(Native Method) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.MotionEvent.getX(MotionEvent.java:1981) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.support.v4.view.MotionEventCompatEclair.getX(MotionEventCompatEclair.java:32) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.support.v4.view.MotionEventCompat$EclairMotionEventVersionImpl.getX(MotionEventCompat.java:110) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.support.v4.view.MotionEventCompat.getX(MotionEventCompat.java:462) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.support.v4.view.ViewPager.onTouchEvent(ViewPager.java:2054) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.View.dispatchTouchEvent(View.java:7127) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2170) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1905) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at yarh.bigdig.newreveil.view.activities.TutorialActivity$2.onTouch(TutorialActivity.java:90) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.View.dispatchTouchEvent(View.java:7122) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2170) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1905) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2176) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1919) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2176) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1919) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2176) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1919) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2176) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1919) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2176) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1919) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2176) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1919) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1925) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1379) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.app.Activity.dispatchTouchEvent(Activity.java:2396) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.support.v7.internal.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:60) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1873) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.View.dispatchPointerEvent(View.java:7307) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3172) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3117) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4153) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4132) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:4224) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:171) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:163) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:4203) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:4243) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.Choreographer.doCallbacks(Choreographer.java:555) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.Choreographer.doFrame(Choreographer.java:523) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.os.Handler.handleCallback(Handler.java:615) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.os.Handler.dispatchMessage(Handler.java:92) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.os.Looper.loop(Looper.java:137) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at android.app.ActivityThread.main(ActivityThread.java:4745) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at java.lang.reflect.Method.invokeNative(Native Method) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at java.lang.reflect.Method.invoke(Method.java:511) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime:  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
10-08 14:23:32.580 25711-25711/yarh.bigdig.newreveil E/AndroidRuntime: at dalvik.system.NativeStart.m 

Answer 1

有点尖锐还，但pagerInner模仿pagerOuter gragging;

pagerOuter.addOnPageChangeListener（新OnPageChangeListener（）{

@Override public void onPageScrolled(int page, float scale, int offset) { 
    if (currentPage == page) { 
     if (part != 1) currentOffset = 0; 
     part = 1; 
    } else { 
     if (part != -1) currentOffset = 0; 
     part = -1; 
    } 
    if (currentOffset != 0 && pagerInner.isFakeDragging() 
     && Math.abs(currentOffset) < width - 20) { 
     pagerInner.fakeDragBy(-1 * ((offset - currentOffset))); 
    } 
    currentOffset = offset; 
    } 

    @Override public void onPageSelected(int i) { 
    setIndicators(i); 
    currentOffset = 0; 
    currentPage = i; 
    if (pagerInner.getCurrentItem() != i) pagerInner.setCurrentItem(i, true); 
    } 

    @Override public void onPageScrollStateChanged(int i) { 
    switch (i) { 
     case ViewPager.SCROLL_STATE_DRAGGING: 
     pagerInner.beginFakeDrag(); 
     break; 
     case ViewPager.SCROLL_STATE_IDLE: 
     break; 
     case ViewPager.SCROLL_STATE_SETTLING: 
     pagerInner.endFakeDrag(); 
     break; 
    } 
    } 
});