View tintView = findViewById(R.id.window_tint); if (tintView == null) return; Window win = getWindow(); WindowManager.LayoutParams winParams = win.getAttributes(); winParams.flags |= (WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN); winParams.flags |= (WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS); // dim the wallpaper somewhat (how much is determined below) winParams.flags |= (WindowManager.LayoutParams.FLAG_DIM_BEHIND); if (mDimmed) { winParams.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN; winParams.dimAmount = DIM_BEHIND_AMOUNT_DIMMED; // show the window tint tintView.startAnimation(AnimationUtils.loadAnimation(this, fade ? R.anim.dim : R.anim.dim_instant)); } else { winParams.flags &= (~WindowManager.LayoutParams.FLAG_FULLSCREEN); winParams.dimAmount = DIM_BEHIND_AMOUNT_NORMAL; // hide the window tint tintView.startAnimation(AnimationUtils.loadAnimation(this, fade ? R.anim.undim : R.anim.undim_instant)); } win.setAttributes(winParams);

startActivity( new Intent(Intent.ACTION_MAIN) .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_CLEAR_TOP) .addCategory(Intent.CATEGORY_HOME)
);