[英]Dispatching ViewPager touch events to underlying view
I have a ViewPager that has 2 pages. 我有一个有2页的ViewPager。 On 1 of them there is a custom view along with some other widgets.
在其中的一个上,有一个自定义视图以及其他一些小部件。 What I want is to disable paging if the touch event was used by that custom view.
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。
Here's the relevant code from my custom view: 这是我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;
}
}
The ViewPager is a normal one, no methods overridden. ViewPager是正常的,没有方法被覆盖。 So, what methods must I override and how so that if the scroll event is located inside the view area, that event is no longer passed to the ViewPager, while if a swipe outside of the view, the ViewPager works normally.
因此,我必须重写哪些方法,以及如何在滚动事件位于视图区域内的情况下将该事件不再传递给ViewPager,而如果在视图外部滑动,则ViewPager可以正常工作。 I'm guessing I shouldn't call super on some methods but I'm not sure.
我猜我不应该在某些方法上调用super,但是我不确定。
@Override
public boolean onTouchEvent(MotionEvent event) {
ViewParent parent = getParent();
parent.requestDisallowInterceptTouchEvent(true);
return super.onTouchEvent(event) || mGestureDetector.onTouchEvent(event);
}
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