relativeLayout.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
int action = event.getAction();
switch (action) {
case MotionEvent.ACTION_DOWN:
x=event.getX();
y=event.getY();
break;
case MotionEvent.ACTION_MOVE:
mx=event.getX();
my=event.getY();
rx=mx-x;
ry=my-y;
mParams.x =(int) rx;
mParams.y =(int)ry;
mWM.updateViewLayout(ivCursor, mParams);
break;
case MotionEvent.ACTION_UP:
break;
}
return true;
}
});
浮动框的代码
mWM = (WindowManager) getBaseContext().getSystemService(Context.WINDOW_SERVICE);
ivCursor = new ImageView(getBaseContext());
ivCursor.setImageResource(R.drawable.ic_launcher);
mParams = new WindowManager.LayoutParams();// 对ivCursor对象的参数描述对象
mParams.height = WindowManager.LayoutParams.WRAP_CONTENT;// 宽度自适应
mParams.width = WindowManager.LayoutParams.WRAP_CONTENT;// 高度自适应
mParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;// 设置成不能获取焦点
mParams.type = LayoutParams.TYPE_PHONE;
// 设置图片格式，效果为背景透明
mParams.format = PixelFormat.RGBA_8888;
mParams.gravity = Gravity.CENTER_HORIZONTAL | Gravity.CENTER_VERTICAL;
mParams.x = 0;
mParams.y = 0;
mWM.addView(ivCursor, mParams);
当我手指滑动的时候 浮动框是跟着动的 松开后 再去滑动 浮空框就又从原点开始滑动了 有什么办法能让浮动框不从原点开始 就从停止的地方开始滑动啊
relativeLayout外层再套一个relativelayout布局。
然后内层relativeLayout就可以拖动更新了
case MotionEvent.ACTION_DOWN:
x=event.getX();//点击的时候坐标，假如是50
y=event.getY();
break;
case MotionEvent.ACTION_MOVE:
mx=event.getX(); //这里一移动，还是获取的还是50
my=event.getY();
rx=mx-x; //rx就是0或者比0大点
ry=my-y;
mParams.x =(int) rx; //屏幕的上坐标就是0了，
mParams.y =(int)ry;
mWM.updateViewLayout(ivCursor, mParams); //更新后回到屏幕左上角原点
break;
改成类似
int mx0 = 0;
int my0 = 0;
case MotionEvent.ACTION_MOVE:
mx=event.getX();
my=event.getY();
mx0=mx0==0?mx:mx0;
my0=my0==0?my:my0;
rx=mx-mx0+x;
ry=my-my0+y;
my0=my;
mParams.x =(int) rx;
mParams.y =(int)ry;
mWM.updateViewLayout(ivCursor, mParams);
break;