if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {            //透明状态栏            getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);            //透明导航栏            getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);            View contentView=getWindow().findViewById(Window.ID_ANDROID_CONTENT);            contentView.setBackgroundColor(getResources().getColor(R.color.app_theme_color));            contentView.setPadding(0, DensityUtils.dip2px(getBaseContext(),20),0,0);        }