[英]How to add an OnTouchListener over a gridView?
So I have a layout that is made of GridView
and I want to add an OnTouchListener
to handle the event when the user swipes left or right, so I made a class that implements OnTouchListener
it's called OnSwipeTouchListener
and it's working really good but the problem is my gridView, the scroll is working fine and everything but when I click on an item it automatically chooses the first item in the row. 因此,我有一个由
GridView
构成的布局,我想添加一个OnTouchListener
来处理用户向左或向右滑动时的事件,因此我制作了一个实现OnTouchListener
的类,称为OnSwipeTouchListener
,它确实工作得很好,但是问题是我的在gridView上,滚动条工作正常,并且一切正常,但是当我单击某个项目时,它会自动选择该行中的第一个项目。 any idea on how to fix this or another way to detect a left or right swipe and makes the gridview work fine, thanks. 关于如何解决此问题的另一种方法,或通过其他方法检测左右滑动并使Gridview正常工作的想法,谢谢。
PS: the gridView works fine when I remove the onTouchListener. PS:当我删除onTouchListener时,gridView可以正常工作。
The OnSwipeTouchListner: OnSwipeTouchListner:
public class OnSwipeTouchListener implements OnTouchListener {
private final GestureDetector gestureDetector;
public OnSwipeTouchListener(Context context) {
gestureDetector = new GestureDetector(context, new GestureListener());
}
public void onSwipeLeft() {
}
public void onSwipeRight() {
}
public boolean onTouch(View v, MotionEvent event) {
return gestureDetector.onTouchEvent(event);
}
private final class GestureListener extends SimpleOnGestureListener {
private static final int SWIPE_DISTANCE_THRESHOLD = 100;
private static final int SWIPE_VELOCITY_THRESHOLD = 100;
@Override
public boolean onDown(MotionEvent e) {
return true;
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
float distanceX = e2.getX() - e1.getX();
float distanceY = e2.getY() - e1.getY();
if (Math.abs(distanceX) > Math.abs(distanceY) && Math.abs(distanceX) > SWIPE_DISTANCE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
if (distanceX > 0)
onSwipeRight();
else
onSwipeLeft();
return true;
}
return false;
}
}
}
calling it in the main activity: 在主要活动中调用它:
gridView.setOnTouchListener(new OnSwipeTouchListener(this){
public void onSwipeRight() {
}
public void onSwipeLeft() {
}
});
Try using setOnItemClickListener
尝试使用
setOnItemClickListener
gridView.setOnItemClickListener(
new OnItemClickListener(){
public void onItemClick(AdapterView<?> arg0, View view, int arg2, long arg3) {
}
});
);
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.