Java Code Examples for android.view.View#SYSTEM_UI_FLAG_IMMERSIVE

@Override
public void run() {
    int flags;
    int curApiVersion = android.os.Build.VERSION.SDK_INT;
    // This work only for android 4.4+
    if (curApiVersion >= Build.VERSION_CODES.KITKAT) {
        // This work only for android 4.4+
        // hide navigation bar permanently in android activity
        // touch the screen, the navigation bar will not show
        flags = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_IMMERSIVE
                | View.SYSTEM_UI_FLAG_FULLSCREEN;

    } else {
        // touch the screen, the navigation bar will show
        flags = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
    }

    // must be executed in main thread :)
    getWindow().getDecorView().setSystemUiVisibility(flags);
}
 

@Override
public void run() {
    int flags;
    int curApiVersion = android.os.Build.VERSION.SDK_INT;
    // This work only for android 4.4+
    if (curApiVersion >= Build.VERSION_CODES.KITKAT) {
        // This work only for android 4.4+
        // hide navigation bar permanently in android activity
        // touch the screen, the navigation bar will not show
        flags = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_IMMERSIVE
                | View.SYSTEM_UI_FLAG_FULLSCREEN;

    } else {
        // touch the screen, the navigation bar will show
        flags = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
    }

    // must be executed in main thread :)
    getWindow().getDecorView().setSystemUiVisibility(flags);
}
 

@Override
public void enterFullscreen() {
    isFullscreen = true;
    int uiOption = View.SYSTEM_UI_FLAG_LAYOUT_STABLE
            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_FULLSCREEN;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
        uiOption |= View.SYSTEM_UI_FLAG_IMMERSIVE;
    }
    getWindow().getDecorView().setSystemUiVisibility(uiOption);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
    if (getSupportActionBar() != null) {
        getSupportActionBar().hide();
    }
    ndMenu.getDrawerLayout().setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
}
 

/**
 * Hide navigation bar.
 */
public final void hideNavigationBar() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
        int uiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
                | View.SYSTEM_UI_FLAG_IMMERSIVE;

        View decorView = getWindow().getDecorView();
        decorView.setSystemUiVisibility(uiOptions);

    } else {
        WindowManager.LayoutParams lp = getWindow().getAttributes();
        lp.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
        getWindow().setAttributes(lp);
    }
}
 

/**
 * Determines the appropriate fullscreen flags based on the
 * systems API version.
 *
 * @return The appropriate decor view flags to enter fullscreen mode when supported
 */
@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
private int getFullscreenUiFlags() {
    int flags = View.SYSTEM_UI_FLAG_LOW_PROFILE | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
        flags |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_FULLSCREEN
                | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
    }
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
        flags |= View.SYSTEM_UI_FLAG_IMMERSIVE;
    }
    return flags;
}
 

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    if (activity.getSupportActionBar() != null && activity.getSupportActionBar().isShowing())
        activity.getSupportActionBar().hide();

    if (Build.VERSION.SDK_INT >= 19) {
        mUIFlag ^= View.SYSTEM_UI_FLAG_IMMERSIVE;
    }

    if (this.isVisible()) {
        // Check orientation and lock to portrait if we are on phone
        if (getResources().getBoolean(R.bool.portrait_only)) {
            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
        }
    }
    imageLoader.displayImage(currImg, mImageView, options, imageLoadingListener);
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // 隐藏状态栏
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
    WindowManager.LayoutParams params = getWindow().getAttributes();
    params.systemUiVisibility = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_IMMERSIVE;
    getWindow().setAttributes(params);
    setContentView(R.layout.activity_tidal_pat_record_video);
    mMusicBean = (MusicBean) getIntent().getSerializableExtra("MusicBean");
    mPresenter = new RecordVideoPresenter(this, mMusicBean);
    initView();
    boolean isAudioPermission = CheckPermissionUtil.isHasAudioPermission(this);
    if (!isAudioPermission) {
        mCircleRecordView.setCanTouch(isAudioPermission);
        ToastTool.showShort(AppUtil.getApplicationContext(), R.string.tidal_pat_record_check_audio_permission);
    }
}
 

/**
 * Show / hide bottom and top Android system bars
 *
 * @param visible True if bars have to be shown; false instead
 */
private void setSystemBarsVisible(boolean visible) {
    int uiOptions;
    if (visible) {
        uiOptions = View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN;
    } else {
        uiOptions = View.SYSTEM_UI_FLAG_IMMERSIVE
                // Set the content to appear under the system bars so that the
                // content doesn't resize when the system bars hide and show.
                | 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;
    }

    // Defensive programming here because crash reports show that getView() sometimes is null
    // (just don't ask me why...)
    View v = getView();
    if (v != null) v.setSystemUiVisibility(uiOptions);
}
 

@Override
protected int createHideFlags() {
    int flag = super.createHideFlags();

    if (mLevel == SystemUiHelper.LEVEL_IMMERSIVE) {
        // If the client requested immersive mode, and we're on Android 4.4
        // or later, add relevant flags. Applying HIDE_NAVIGATION without
        // IMMERSIVE prevents the activity from accepting all touch events,
        // so we only do this on Android 4.4 and later (where IMMERSIVE is
        // present).
        flag |= ((mFlags & SystemUiHelper.FLAG_IMMERSIVE_STICKY) != 0)
                        ? View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
                        : View.SYSTEM_UI_FLAG_IMMERSIVE;
    }

    return flag;
}
 

public void setSystemUiVisibilityFake() {
    int visibility = SYSTEM_UI_BASIC_FLAGS | View.SYSTEM_UI_FLAG_IMMERSIVE;
    if (getConfig().isFullScreen()) {
        visibility |= View.SYSTEM_UI_FLAG_FULLSCREEN;
    }

    getWindow().getDecorView().setSystemUiVisibility(visibility);
}
 

/**
 * Shows or hides system UI (status bar and navigation bar).
 */
private void showSystemUi(boolean show) {
    int flags = 0;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
        flags = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_FULLSCREEN
                | View.SYSTEM_UI_FLAG_IMMERSIVE;
    }

    getWindow().getDecorView().setSystemUiVisibility(show ? 0 : flags);
}
 

/**
     * 隐藏虚拟按键，并且全屏
     */
    protected void hideBottomUIMenu() {
        //隐藏虚拟按键，并且全屏
        int flags;
        int curApiVersion = android.os.Build.VERSION.SDK_INT;
        // This work only for android 4.4+
        if (curApiVersion >= Build.VERSION_CODES.KITKAT) {
            // This work only for android 4.4+
            // hide navigation bar permanently in android activity
            // touch the screen, the navigation bar will not show
            flags = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                    | View.SYSTEM_UI_FLAG_IMMERSIVE
                    | View.SYSTEM_UI_FLAG_FULLSCREEN;

        } else {
            // touch the screen, the navigation bar will show
            flags = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
        }

        // must be executed in main thread :)
        getWindow().getDecorView().setSystemUiVisibility(flags);

//        if (Build.VERSION.SDK_INT > 11 && Build.VERSION.SDK_INT < 19) { // lower api
//            View v = this.getWindow().getDecorView();
//            v.setSystemUiVisibility(View.GONE);
//        } else if (Build.VERSION.SDK_INT >= 19) {
//            Window window = getWindow();
//            WindowManager.LayoutParams params = window.getAttributes();
//            params.systemUiVisibility = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
//            window.setAttributes(params);
//
////            //for new api versions.
////            View decorView = getWindow().getDecorView();
////            int uiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
////                    | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY | View.SYSTEM_UI_FLAG_FULLSCREEN;
////            decorView.setSystemUiVisibility(uiOptions);
//        }
    }
 

/**
 * @param savedInstanceState if the fragment is being re-created from a previous saved state, this is the state.
 */
@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    if (activity.getSupportActionBar() != null)
        activity.getSupportActionBar().hide();
    if (Build.VERSION.SDK_INT >= 19) {
        mUIFlag ^= View.SYSTEM_UI_FLAG_IMMERSIVE;
    }
    activity.getWindow().getDecorView().setBackgroundColor(ContextCompat.getColor(activity, R.color.black));
    if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE)
        activity.getWindow().getDecorView().setSystemUiVisibility(mUIFlag);
    else
        activity.getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
}
 

@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
private int getFullscreenUiFlags() {
    int flags = View.SYSTEM_UI_FLAG_LOW_PROFILE | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;

    flags |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE
            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_FULLSCREEN
            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
        flags |= View.SYSTEM_UI_FLAG_IMMERSIVE;
    }
    return flags;
}
 

@TargetApi(Build.VERSION_CODES.ICE_CREAM_SANDWICH)
private int getFullscreenUiFlags() {
    int flags = View.SYSTEM_UI_FLAG_LOW_PROFILE | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;

    flags |= View.SYSTEM_UI_FLAG_LAYOUT_STABLE
            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_FULLSCREEN
            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
        flags |= View.SYSTEM_UI_FLAG_IMMERSIVE;
    }
    return flags;
}
 

public static void hideNavigation(Window curWindow) {
        if (curWindow != null && Build.VERSION.SDK_INT >= 19) {
            //隐藏Navigation bar
            WindowManager.LayoutParams layoutParams = curWindow.getAttributes();
            layoutParams.systemUiVisibility |= View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                    | View.SYSTEM_UI_FLAG_IMMERSIVE
                    | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
            ;
//        layoutParams.layoutInDisplayCutoutMode = WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;
            curWindow.setAttributes(layoutParams);
//            View decorView = curWindow.getDecorView();
//            if (decorView != null) {
//                int oldUiFlags = decorView.getSystemUiVisibility();
//                int uiFlags =
//                        oldUiFlags |
//                        View.SYSTEM_UI_FLAG_LAYOUT_STABLE
////                            | WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS
//                                | View.SYSTEM_UI_FLAG_IMMERSIVE
//                                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
////                            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
//                                | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
////                            | View.SYSTEM_UI_FLAG_FULLSCREEN
//                                | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
//                decorView.setSystemUiVisibility(uiFlags);
//            }
        }
    }
 

/**
     * 代码的方式来设置沉浸式界面
     * @param curActivity 当前Activity
     * @param needFullScreen 是否需要全屏：一般为false
     * @param translucentNavBar 是否需要透明导航栏：一般为true
     * @param hideNavigation 是否要隐藏导航栏： 一般为true
     * @param drawStatusBarBg 是否需要在Android 5.0及以上 接管状态栏背景绘制，用于指定 状态栏背景颜色
     * @param statusBarColor 想要的状态栏颜色
     * @param isLightStatusBar 是否需要在Android 6.0及以上 启用状态栏的灰色文字和图标
     */
    public static void immersiveScreen(Activity curActivity,boolean needFullScreen,
                                       boolean translucentNavBar,boolean hideNavigation,
                                       boolean drawStatusBarBg, int statusBarColor,boolean isLightStatusBar) {
        if (curActivity != null) {
            Window window = curActivity.getWindow();
            if (window != null) {
                WindowManager.LayoutParams windowParams = window.getAttributes();
                if (windowParams != null) {
                    //已经存在的 可见性参数
                    int mayExistVisibility = windowParams.systemUiVisibility;
//                    int mayExistFlags = windowParams.flags;
                    int curSdkInt = Build.VERSION.SDK_INT;
                    if (needFullScreen) {
//                        mayExistFlags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
                        window.addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
                    }

                    if (curSdkInt >= 19) {//Android 4.4后才有沉浸式
                        if (translucentNavBar) {
//                            mayExistFlags |= WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION;
                            window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
                        }
                        //默认的实现沉浸式flag
                        window.addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);

                        if (curSdkInt >= 21) {
                            if (drawStatusBarBg) {//如果需要 代替绘制状态栏的背景,则需要清除 FLAG_TRANSLUCENT_STATUS
                                window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
                                window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
                            }
                            if (statusBarColor != -1) {
                                window.setStatusBarColor(statusBarColor);
                            }
                            if (curSdkInt >= 23) {//Android 6.0以上 实现状态栏字色和图标浅黑色
                                if (isLightStatusBar) {
                                    mayExistVisibility |= View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;
                                }
                            }
                        }
                        if (hideNavigation) {//隐藏导航栏
                            mayExistVisibility |= View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                                    | View.SYSTEM_UI_FLAG_IMMERSIVE
                                    | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
                            ;
                            windowParams.systemUiVisibility = mayExistVisibility;
                            window.setAttributes(windowParams);
                        }
                    }//curSdkInt >= 19 end
                }
            }
        }
    }
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // 隐藏状态栏
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
    WindowManager.LayoutParams params = getWindow().getAttributes();
    params.systemUiVisibility = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION| View.SYSTEM_UI_FLAG_IMMERSIVE;
    getWindow().setAttributes(params);
    setContentView(R.layout.activity_tidal_pat_video_crop);
    mCurrentVideoPath = getIntent().getStringExtra("mCurrentVideoPath");

    mPlayView = (SpecialEffectsPlayView) findViewById(R.id.tidal_pat_crop_video_pv);
    mPlayView.setLooping(true);
    mPlayView.setNeedCallBackFinish(true);
    SpecialEffectsPlayManager.startPlay(mPlayView);



    mVideoCropViewBar = findViewById(R.id.tidal_pat_video_crop_crop_view);
    mSpeedLevelControllerView =  findViewById(R.id.tidal_pat_video_crop_speed_controller_view);
    mSaveImg = findViewById(R.id.tidal_pat_crop_video_save_img);
    mSelectedTxt = findViewById(R.id.tidal_pat_video_crop_selected_time_txt);


    mVideoCropViewBar.setVideoCropViewBarListener(mVideoCropViewBarListener);
    mVideoCropViewBar.setVideoPath(mCurrentVideoPath);
    mPlayView.setVideoPath(mCurrentVideoPath);


    mSpeedLevelControllerView.setOnSpeedLevelChangeListener(mSpeedLevelChangeListener);



    mSaveImg.setOnClickListener(this);
    findViewById(R.id.tidal_pat_crop_video_back_img).setOnClickListener(this);

    mPlayView.setSpecialEffectsPlayViewListener(mPlayViewListener);

    mLoadingView = findViewById(R.id.personal_show_record_video_loading_layout);
    mLoadingView.setOnClickListener(this);
    mLoadingTxt = (TextView) findViewById(R.id.tidal_pat_record_video_loading_txt);
    initRecordTimeSelectorView();
}
 

/**
 * Detects and toggles immersive mode (also known as "hidey bar" mode).
 */
public void toggleUiFlags() {

    // BEGIN_INCLUDE (get_current_ui_flags)
    // The "Decor View" is the parent view of the Activity.  It's also conveniently the easiest
    // one to find from within a fragment, since there's a handy helper method to pull it, and
    // we don't have to bother with picking a view somewhere deeper in the hierarchy and calling
    // "findViewById" on it.
    View decorView = getActivity().getWindow().getDecorView();
    int uiOptions = decorView.getSystemUiVisibility();
    int newUiOptions = uiOptions;
    // END_INCLUDE (get_current_ui_flags)

    // BEGIN_INCLUDE (toggle_lowprofile_mode)
    // Low profile mode doesn't resize the screen at all, but it covers the nav & status bar
    // icons with black so they're less distracting.  Unlike "full screen" and "hide nav bar,"
    // this mode doesn't interact with immersive mode at all, but it's instructive when running
    // this sample to observe the differences in behavior.
    if (mLowProfileCheckBox.isChecked()) {
        newUiOptions |= View.SYSTEM_UI_FLAG_LOW_PROFILE;
    } else {
        newUiOptions &= ~View.SYSTEM_UI_FLAG_LOW_PROFILE;
    }
    // END_INCLUDE (toggle_lowprofile_mode)

    // BEGIN_INCLUDE (toggle_fullscreen_mode)
    // When enabled, this flag hides non-critical UI, such as the status bar,
    // which usually shows notification icons, battery life, etc
    // on phone-sized devices.  The bar reappears when the user swipes it down.  When immersive
    // mode is also enabled, the app-drawable area expands, and when the status bar is swiped
    // down, it appears semi-transparently and slides in over the app, instead of pushing it
    // down.
    if (mHideStatusBarCheckBox.isChecked()) {
        newUiOptions |= View.SYSTEM_UI_FLAG_FULLSCREEN;
    } else {
        newUiOptions &= ~View.SYSTEM_UI_FLAG_FULLSCREEN;
    }
    // END_INCLUDE (toggle_fullscreen_mode)

    // BEGIN_INCLUDE (toggle_hidenav_mode)
    // When enabled, this flag hides the black nav bar along the bottom,
    // where the home/back buttons are.  The nav bar normally instantly reappears
    // when the user touches the screen.  When immersive mode is also enabled, the nav bar
    // stays hidden until the user swipes it back.
    if (mHideNavCheckbox.isChecked()) {
        newUiOptions |= View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
    } else {
        newUiOptions &= ~View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
    }
    // END_INCLUDE (toggle_hidenav_mode)

    // BEGIN_INCLUDE (toggle_immersive_mode)
    // Immersive mode doesn't do anything without at least one of the previous flags
    // enabled.  When enabled, it allows the user to swipe the status and/or nav bars
    // off-screen.  When the user swipes the bars back onto the screen, the flags are cleared
    // and immersive mode is automatically disabled.
    if (mImmersiveModeCheckBox.isChecked()) {
        newUiOptions |= View.SYSTEM_UI_FLAG_IMMERSIVE;
    } else {
        newUiOptions &= ~View.SYSTEM_UI_FLAG_IMMERSIVE;
    }
    // END_INCLUDE (toggle_immersive_mode)

    // BEGIN_INCLUDE (toggle_immersive_mode_sticky)
    // There's actually two forms of immersive mode, normal and "sticky".  Sticky immersive mode
    // is different in 2 key ways:
    //
    // * Uses semi-transparent bars for the nav and status bars
    // * This UI flag will *not* be cleared when the user interacts with the UI.
    //   When the user swipes, the bars will temporarily appear for a few seconds and then
    //   disappear again.
    if (mImmersiveModeStickyCheckBox.isChecked()) {
        newUiOptions |= View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
    } else {
        newUiOptions &= ~View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
    }
    // END_INCLUDE (toggle_immersive_mode_sticky)

    // BEGIN_INCLUDE (set_ui_flags)
    //Set the new UI flags.
    decorView.setSystemUiVisibility(newUiOptions);
    // END_INCLUDE (set_ui_flags)

    dumpFlagStateToLog(uiOptions);
}
 

/**
     * Detects and toggles immersive mode (also known as "hidey bar" mode).
     */
    public static void toggleHideyBar(View decorView) {
        // The UI options currently enabled are represented by a bitfield.
        // getSystemUiVisibility() gives us that bitfield.
        int uiOptions = decorView.getSystemUiVisibility();
        int newUiOptions = uiOptions;
        boolean isImmersiveModeEnabled =
                ((uiOptions | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY) == uiOptions);
        if (isImmersiveModeEnabled) {
//            Log.i(TAG, "Turning immersive mode mode off. ");
        } else {
//            Log.i(TAG, "Turning immersive mode mode on.");
        }

        // Navigation bar hiding:  Backwards compatible to ICS.
        if (Build.VERSION.SDK_INT >= 14) {
            newUiOptions ^= View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
        }

        // Status bar hiding: Backwards compatible to Jellybean
        if (Build.VERSION.SDK_INT >= 16) {
            newUiOptions ^= View.SYSTEM_UI_FLAG_FULLSCREEN;
        }

        // Immersive mode: Backward compatible to KitKat.
        // Note that this flag doesn't do anything by itself, it only augments the behavior
        // of HIDE_NAVIGATION and FLAG_FULLSCREEN.  For the purposes of this sample
        // all three flags are being toggled together.
        // Note that there are two immersive mode UI flags, one of which is referred to as "sticky".
        // Sticky immersive mode differs in that it makes the navigation and status bars
        // semi-transparent, and the UI flag does not get cleared when the user interacts with
        // the screen.
        if (Build.VERSION.SDK_INT >= 18) {
            newUiOptions ^= View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
        }

        if (Build.VERSION.SDK_INT >= 19) {
            newUiOptions ^= View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION;
            newUiOptions ^= View.SYSTEM_UI_FLAG_IMMERSIVE;
        }

        decorView.setSystemUiVisibility(newUiOptions);
    }