屏蔽部分安卓电视盒子的全屏提示弹框

 // Setup activity layout
    @Override protected void onCreate(Bundle savedInstanceState)
    {
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        super.onCreate(savedInstanceState);

        String cmdLine = updateUnityCommandLineArguments(getIntent().getStringExtra("unity"));
        getIntent().putExtra("unity", cmdLine);

        mUnityPlayer = new UnityPlayer(this, this);
        setContentView(mUnityPlayer);
        mUnityPlayer.requestFocus();
        getWindow().clearFlags(1024);
        showSystemUi();
        addUiVisibilityChangeListener();
    }
    private static int getLowProfileFlag() {
        return (Build.VERSION.SDK_INT >= 19) ? 5894 : 1;
    }

    private void showSystemUi() {
        if (Build.VERSION.SDK_INT < 11)
            return;
        this.mUnityPlayer.setSystemUiVisibility(this.mUnityPlayer.getSystemUiVisibility() & (getLowProfileFlag() ^ 0xFFFFFFFF));
    }

    private void addUiVisibilityChangeListener() {
        if (Build.VERSION.SDK_INT < 11)
            return;
        this.mUnityPlayer.setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener() {
            public void onSystemUiVisibilityChange(int visibility) {
                UnityPlayerActivity.this.showSystemUi();
            }
        });
    }