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[英]MotionEvent - action_move (listening for action_up) in java
[英]ImageView MotionEvent if two pointer, stop ACTION_UP
在我的活动中,我有一个ImageView
。 它具有捏缩放功能。
当我触摸ImageView
我会显示缩略图布局。
但是当我捏ImageView
缩略图布局会显示出来。 我要阻止吗?
我该怎么做?
这是我的显示缩略图布局的代码:
image.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
Boolean openThumbnails=true;
if(event.getAction() == MotionEvent.ACTION_UP && openThumbnails){
Log.e("event.getAction()", "MotionEvent.ACTION_UP");
if(thumbnailsLayout.getVisibility()==View.GONE && header.getVisibility()==View.GONE && openThumbnails){
thumbnailsLayout.setVisibility(View.VISIBLE);
header.setVisibility(View.VISIBLE);
header.bringToFront();
}
else{
thumbnailsLayout.setVisibility(View.GONE);
header.setVisibility(View.GONE);
}
}
else if(event.getAction() == MotionEvent.ACTION_DOWN){
Log.e("event.getAction()", "MotionEvent.ACTION_DOWN");
return true;
}
else if(event.getAction()==MotionEvent.ACTION_MOVE){
Log.e("openThumbnails before", openThumbnails.toString());
openThumbnails=false;
Log.e("openThumbnails and after", openThumbnails.toString());
}
return false;
}
});
您的openThumbnails始终是真实的。 您在方法开始时进行设置。 您将openThumbnail设置为true的每个触摸事件(例如Action_up,action_move)。 这就是为什么您总是显示它。
image.setOnTouchListener(new OnTouchListener() {
Boolean openThumbnails=true;
@Override
public boolean onTouch(View v, MotionEvent event) {
if(event.getAction() == MotionEvent.ACTION_UP && openThumbnails){
Log.e("event.getAction()", "MotionEvent.ACTION_UP");
if(thumbnailsLayout.getVisibility()==View.GONE && header.getVisibility()==View.GONE && openThumbnails){
thumbnailsLayout.setVisibility(View.VISIBLE);
header.setVisibility(View.VISIBLE);
header.bringToFront();
}
else{
thumbnailsLayout.setVisibility(View.GONE);
header.setVisibility(View.GONE);
}
}
else if(event.getAction() == MotionEvent.ACTION_DOWN){
Log.e("event.getAction()", "MotionEvent.ACTION_DOWN");
return true;
}
else if(event.getAction()==MotionEvent.ACTION_MOVE){
Log.e("openThumbnails before", openThumbnails.toString());
openThumbnails=false;
Log.e("openThumbnails and after", openThumbnails.toString());
}
return false;
}
});
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