Question

我正在使用Android Studios默认实施全屏活动来显示全屏视频。

除了在启动系统UI的点击之后媒体控件仅显示在点击上之外，它的效果很好。我希望只需点击一下即可显示系统ui和视频的媒体控件。这是活动代码：

/**
 * An example full-screen activity that shows and hides the system UI (i.e.
 * status bar and navigation/system bar) with user interaction.
 *
 * @see SystemUiHider
 */
public class FullScreenVideoViewActivity extends Activity {
    /**
     * Whether or not the system UI should be auto-hidden after
     * {@link #AUTO_HIDE_DELAY_MILLIS} milliseconds.
     */
    private static final boolean AUTO_HIDE = true;

    /**
     * If {@link #AUTO_HIDE} is set, the number of milliseconds to wait after
     * user interaction before hiding the system UI.
     */
    private static final int AUTO_HIDE_DELAY_MILLIS = 3000;

    /**
     * If set, will toggle the system UI visibility upon interaction. Otherwise,
     * will show the system UI visibility upon interaction.
     */
    private static final boolean TOGGLE_ON_CLICK = true;

    /**
     * The flags to pass to {@link SystemUiHider#getInstance}.
     */
    private static final int HIDER_FLAGS = SystemUiHider.FLAG_HIDE_NAVIGATION;

    /**
     * The instance of the {@link SystemUiHider} for this activity.
     */
    private SystemUiHider mSystemUiHider;

    private MediaController mMediaController;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        requestWindowFeature(Window.FEATURE_NO_TITLE);
//        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
//                WindowManager.LayoutParams.FLAG_FULLSCREEN);

        setContentView(R.layout.activity_full_screen_video_view);

        final VideoView contentView = (VideoView)findViewById(R.id.trailers_video_view);

        Intent intent = getIntent();
        String url = (String) intent.getSerializableExtra("video_url");

        mMediaController = new MediaController(this);
        contentView.setMediaController(mMediaController);
        contentView.setVideoURI(Uri.parse(url));
        contentView.requestFocus();
        contentView.start();

        // Set up an instance of SystemUiHider to control the system UI for
        // this activity.
        mSystemUiHider = SystemUiHider.getInstance(this, contentView, HIDER_FLAGS);
        mSystemUiHider.setup();
        mSystemUiHider
                .setOnVisibilityChangeListener(new SystemUiHider.OnVisibilityChangeListener() {

                    @Override
                    @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
                    public void onVisibilityChange(boolean visible) {

                        if (visible && AUTO_HIDE) {
                            // Schedule a hide().
                            delayedHide(AUTO_HIDE_DELAY_MILLIS);
                        }
                    }
                });

        // Set up the user interaction to manually show or hide the system UI.
        contentView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                if (TOGGLE_ON_CLICK) {
                    mSystemUiHider.toggle();
                } else {
                    mSystemUiHider.show();
                }
            }
        });

        // Upon interacting with UI controls, delay any scheduled hide()
        // operations to prevent the jarring behavior of controls going away
        // while interacting with the UI.
        //findViewById(R.id.dummy_button).setOnTouchListener(mDelayHideTouchListener);
        contentView.setOnTouchListener((mDelayHideTouchListener));
    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);

        // Trigger the initial hide() shortly after the activity has been
        // created, to briefly hint to the user that UI controls
        // are available.
        delayedHide(100);
    }


    /**
     * Touch listener to use for in-layout UI controls to delay hiding the
     * system UI. This is to prevent the jarring behavior of controls going away
     * while interacting with activity UI.
     */
    View.OnTouchListener mDelayHideTouchListener = new View.OnTouchListener() {
        @Override
        public boolean onTouch(View view, MotionEvent motionEvent) {
            if (AUTO_HIDE) {
                delayedHide(AUTO_HIDE_DELAY_MILLIS);
            }
            return false;
        }
    };

    Handler mHideHandler = new Handler();
    Runnable mHideRunnable = new Runnable() {
        @Override
        public void run() {
            mSystemUiHider.hide();
        }
    };

    /**
     * Schedules a call to hide() in [delay] milliseconds, canceling any
     * previously scheduled calls.
     */
    private void delayedHide(int delayMillis) {
        mHideHandler.removeCallbacks(mHideRunnable);
        mHideHandler.postDelayed(mHideRunnable, delayMillis);
    }
}

Answer 1

您只需将媒体控制器方法添加到SystemUI可见性更改侦听器。

    mSystemUiHider
            .setOnVisibilityChangeListener(new SystemUiHider.OnVisibilityChangeListener() {

                @Override
                @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
                public void onVisibilityChange(boolean visible) {

                    if(visible){
                        yourMediaController.show();

                        //Also i generally add the actionbar here as well!
                        getActionBar().show();
                    } else {
                        yourMediaController.hide();
                        //Also i generally add the actionbar here as well!
                        getActionBar().hide();
                    }
                    if (visible && AUTO_HIDE) {
                        // Schedule a hide().
                        delayedHide(AUTO_HIDE_DELAY_MILLIS);
                    }
                }
            });

同样在mHideRunnable Runnable中，您应该为mediaController添加hide方法，使其在指定时间（通常为3秒）后隐藏。

Runnable mHideRunnable = new Runnable() {
        @Override
        public void run() {
            mSystemUiHider.hide();
            yourMediaController.hide();
            //Optional Action Bar
            getActionBar().hide();
        }
    };

希望它有所帮助！

在显示系统UI的同时显示VideoView媒体控件

1 个答案: