WindowManager 通过LayoutParams让window全屏且显示在最前面

WindowManager.LayoutParams params = new WindowManager.LayoutParams();
params.flags = WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
                        | WindowManager.LayoutParams.FLAG_FULLSCREEN
                        | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
                        | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
                        | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
                        | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
                        | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH;

params.systemUiVisibility =  View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                        | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                        | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                        // Hide the nav bar and status bar
                        | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                        | View.SYSTEM_UI_FLAG_FULLSCREEN;

适配android 12：

                params.flags = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS
                        | WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION
                        | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN;


                params.systemUiVisibility =  View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                        | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                        | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                        // Hide the nav bar and status bar
                        | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                        | View.SYSTEM_UI_FLAG_FULLSCREEN;

代码片段记录一下