[英]Custom View and On Touch Listeners
What I am trying to achieve is that I have a custom view. 我想要实现的是我有一个自定义视图。 And the view is draggable around the screen.
并且视图可以在屏幕上拖动。
But how would I display another view when the view is only tapped? 但是,当只点击视图时,如何显示另一个视图?
My intial idea on how to achieve my what I need is to see if the view was long clicked then it can be moved and if not display the view. 关于如何实现所需功能的最初想法是查看视图是否被长按,然后可以将其移动,如果没有显示该视图。
This is my code: 这是我的代码:
collapsedLayout.setOnTouchListener(new View.OnTouchListener() {
private int initialX;
private int initialY;
private float initialTouchX;
private float initialTouchY;
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
initialX = params.x;
initialY = params.y;
initialTouchX = event.getRawX();
initialTouchY = event.getRawY();
return true;
case MotionEvent.ACTION_UP:
return true;
case MotionEvent.ACTION_MOVE:
params.x = initialX + (int) (event.getRawX() - initialTouchX);
params.y = initialY + (int) (event.getRawY() - initialTouchY);
mWindowManager.updateViewLayout(entireLayout, params);
return true;
}
return false;
}
});
Thanks in advance for any help! 在此先感谢您的帮助!
private static final int THRESHOLD_X = 120;
private static final int THRESHOLD_Y = 120;
private static final int NONE = 0;
private static final int MOVE = 1;
private static int mode = NONE;
collapsedLayout.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
switch (motionEvent.getAction()){
case MotionEvent.ACTION_DOWN:
// Action Down
break;
case MotionEvent.ACTION_MOVE:
if(view.getX() > THRESHOLD_X && view.getY()> THRESHOLD_Y){
// performDrag
mode = MOVE;
performDrag(view);
}
break;
case MotionEvent.ACTION_UP:
// Action up
if(mode == MOVE){
// Do nothing and return
return true;
}
// Perform click to the view
view.performClick();
break;
default:
// Handle default case.
break;
}
return false;
}
});
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