悬浮按钮拖拽

<RelativeLayout xmlns:android="
android:layout_width=“match_parent”
android:layout_height=“match_parent”>

我们需要为悬浮按钮添加拖拽功能。首先，在活动或片段中找到按钮的引用，并为其设置触摸监听器。

Button floatingButton = findViewById(R.id.floatingButton);
floatingButton.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 = v.getLeft();
            initialY = v.getTop();
            initialTouchX = event.getRawX();
            initialTouchY = event.getRawY();
            return true;
        case MotionEvent.ACTION_MOVE:
            int newX = initialX + (int) (event.getRawX() - initialTouchX);
            int newY = initialY + (int) (event.getRawY() - initialTouchY);
            // 限制按钮的移动范围，以防止其超出屏幕边界，可以在计算新位置时添加一些逻辑。
			int maxX = screenWidth - v.getWidth();
			int maxY = screenHeight - v.getHeight();
			newX = Math.max(0, Math.min(newX, maxX));
			newY = Math.max(0, Math.min(newY, maxY));
			v.layout(newX, newY, newX + v.getWidth(), newY + v.getHeight());
            v.layout(newX, newY, newX + v.getWidth(), newY + v.getHeight());
            return true;
        case MotionEvent.ACTION_UP:
            // 处理按钮松开后的逻辑
            return true;
    }
    return false;
}

});