我正在尝试拖放一个按钮,问题是当我在运动事件中使用 getX() 时它可以工作,但按钮开始颤抖。当我调用 getRawX() 方法时,它不会颤抖,但它会在我开始拖放之前至少跳跃 80 像素。
我该如何管理,我将在这里发布我的代码:
public class MyButton extends Button {
private final static int START_DRAGGING = 0;
private final static int STOP_DRAGGING = 1;
private int status;
private LinearLayout parentLayout;
public MyButton(Context context) {
super(context);
}
public MyButton(Context context, AttributeSet attrs) {
super(context, attrs);
}
public MyButton(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
// Log.i("teste", "Button width: " + btWidth + ", Height : "+ btHeight);
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
status = START_DRAGGING;
Log.i("teste", "Coordenada on ACTION_DOWN: " + (int) event.getRawX());
break;
case MotionEvent.ACTION_UP:
status = STOP_DRAGGING;
Log.i("teste", "Coordenada on ACTION_UP: " + (int) event.getRawX());
break;
case MotionEvent.ACTION_MOVE:
if(status == START_DRAGGING){
parentLayout.setPadding((int)event.getRawX(), 0,0,0);
parentLayout.invalidate();
Log.i("teste", "Coordenada on ACTION_MOVE: " + (int) event.getRawX());
}
break;
}
return true;
}
}