ViewPager和SlidingPaneLayout的滑动事件冲突解决方法

问题描述：

ViewPager和SlidingPaneLayout的滑动事件冲突。

问题分析：

在手指左右滑动时，SlidingPaneLayout会屏蔽ViewPager的滑动事件。

解决办法：

自定义SlidingPaneLayout类

import android.content.Context;
import android.support.v4.view.MotionEventCompat;
import android.support.v4.widget.SlidingPaneLayout;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.ViewConfiguration;

public class PagerEnabledSlidingPaneLayout extends SlidingPaneLayout {

  private float mInitialMotionX;
  private float mInitialMotionY;
  private float mEdgeSlop;

  public PagerEnabledSlidingPaneLayout(Context context) {
    this(context, null);
  }

public PagerEnabledSlidingPaneLayout(Context context, 
AttributeSet attrs) {
    this(context, attrs, 0);
  }

public PagerEnabledSlidingPaneLayout(Context context, 
AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);

    ViewConfiguration config = ViewConfiguration.get(context);
    mEdgeSlop = config.getScaledEdgeSlop();
  }

  @Override
  public boolean onInterceptTouchEvent(MotionEvent ev) {

    switch (MotionEventCompat.getActionMasked(ev)) {
      case MotionEvent.ACTION_DOWN: {
 mInitialMotionX = ev.getX();
 mInitialMotionY = ev.getY();
 break;
      }

      case MotionEvent.ACTION_MOVE: {
 final float x = ev.getX();
 final float y = ev.getY();
 if (mInitialMotionX > mEdgeSlop && !isOpen() && canScroll(this, false,
     Math.round(x - mInitialMotionX), Math.round(x), Math.round(y))) { 
   MotionEvent cancelEvent = MotionEvent.obtain(ev);
   cancelEvent.setAction(MotionEvent.ACTION_CANCEL);
   return super.onInterceptTouchEvent(cancelEvent);
 }
      }
    }
    return super.onInterceptTouchEvent(ev);
  }
}

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