FloatingWidgetService.java 文件源码

private void initPosition() {
    mParams = new WindowManager.LayoutParams(
            WindowManager.LayoutParams.WRAP_CONTENT,
            WindowManager.LayoutParams.WRAP_CONTENT,
            WindowManager.LayoutParams.TYPE_PHONE,
            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
            PixelFormat.TRANSLUCENT);

    mParams.gravity = Gravity.TOP | Gravity.LEFT;
    mParams.x = 0;
    mParams.y = 150;

    mWindowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
    mWindowManager.addView(mFloatingView, mParams);
}