将ViewPager触摸事件调度到基础视图

时间:2015-03-09 19:05:18

标签: android events android-viewpager touch dispatch

我有一个有2页的ViewPager。其中一个是自定义视图以及其他一些小部件。我想要的是如果该自定义视图使用了触摸事件,则禁用分页。

以下是我的自定义视图中的相关代码:

class OscilloscopeView extends View implements GestureDetector.OnGestureListener {

    OscilloscopeView(Context context){

        mGestureDetector = new GestureDetectorCompat(context, this);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {

        return super.onTouchEvent(event) || mGestureDetector.onTouchEvent(event);
    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent event) {

        return super.dispatchTouchEvent(event) || mGestureDetector.onTouchEvent(event);
    }

    @Override
    public boolean onDown(MotionEvent motionEvent) {
        Log.d("MDETECTOR", "onDown: " + motionEvent.toString());
        return true;
    }

    @Override
    public void onShowPress(MotionEvent motionEvent) {

    }

    @Override
    public boolean onSingleTapUp(MotionEvent motionEvent) {
        return false;
    }

    @Override
    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
        int dHPos = (int) (distanceX / mWidth * points.length / 2);
        if (Utilities.around(hPosition - dHPos, 0, points.length / 4))
            hPosition -= dHPos;
        triggerLevel += (2 * distanceY / mHeight * max);
        invalidate();
        return true;
    }

    @Override
    public void onLongPress(MotionEvent motionEvent) {
        hPosition = 0;
        triggerLevel = 0;
    }

    @Override
    public boolean onFling(MotionEvent motionEvent, MotionEvent motionEvent2, float v, float v2) {
        Log.d("MDETECTOR", "onFling: " + motionEvent.toString());
        return true;
    }
}

ViewPager是正常的,没有覆盖任何方法。因此,我必须覆盖哪些方法以及如何滚动事件位于视图区域内,该事件不再传递给ViewPager,而如果在视图外滑动,则ViewPager正常工作。我猜我不应该在某些方法上打电话超级,但我不确定。

1 个答案:

答案 0 :(得分:1)

@Override
public boolean onTouchEvent(MotionEvent event) {

    ViewParent parent = getParent();

    parent.requestDisallowInterceptTouchEvent(true);

    return super.onTouchEvent(event) || mGestureDetector.onTouchEvent(event);
}