scrollview 与自定义控件的上下滑动冲突 仿iphone时间控件 wheelview

/**

* 能够兼容ViewPager的ScrollView

* @Description: 解决了ViewPager在ScrollView中的滑动反弹问题

*/

publicclassScrollViewExtendextendsScrollView {

// 滑动距离及坐标

privatefloatxDistance, yDistance, xLast, yLast;

publicScrollViewExtend(Context context, AttributeSet attrs) {

super(context, attrs);

}

@Override

publicbooleanonInterceptTouchEvent(MotionEvent ev) {

switch(ev.getAction()) {

caseMotionEvent.ACTION_DOWN:

xDistance = yDistance = 0f;

xLast = ev.getX();

yLast = ev.getY();

break;

caseMotionEvent.ACTION_MOVE:

finalfloatcurX = ev.getX();

finalfloatcurY = ev.getY();

xDistance += Math.abs(curX - xLast);

yDistance += Math.abs(curY - yLast);

xLast = curX;

yLast = curY;

if(xDistance > yDistance){

returnfalse;

}

}

returnsuper.onInterceptTouchEvent(ev);

}

}




这种解决方法虽然解决了两者横向滑动的冲突，但是的缺点在于，上下滑动无法让控件响应到。

所以在这里需要对ACTIOM_MOVE进行判断，可以对XY轴的移动坐标进行比较，

代码如下

/**
 * 能够兼容ViewPager的ScrollView
 * @Description: 解决了ViewPager在ScrollView中的滑动反弹问题
 */
public class ScrollViewExtend extends ScrollView {
	// 滑动距离及坐标
	private float xDistance, yDistance, xLast, yLast;

	public ScrollViewExtend(Context context, AttributeSet attrs) {
		super(context, attrs);
	}

	@Override
	public boolean onInterceptTouchEvent(MotionEvent ev) {
		switch (ev.getAction()) {
		case MotionEvent.ACTION_DOWN:
			xDistance = yDistance = 0f;
			xLast = ev.getX();
			yLast = ev.getY();
			break;
		case MotionEvent.ACTION_MOVE:
			final float curX = ev.getX();
			final float curY = ev.getY();

			xDistance += Math.abs(curX - xLast);
			yDistance += Math.abs(curY - yLast);
			xLast = curX;
			yLast = curY;
			//如果X轴移动量大于Y轴的1.5倍及以上 则返回true scrollview滑动 
			if(xDistance> yDistance*1.5){
				return true;
			}else{
				return false;
			}
		}

		return super.onInterceptTouchEvent(ev);
	}
}