Question

我想为视频观看实现静音按钮。我已经在下面编写了代码，但是onPrepared()中的代码似乎没有执行。听者似乎正在工作。

我不确定这段代码是什么问题。

此外，如果有实现内置静音按钮的方法，我欢迎您提出建议。但是我找不到那种东西。

以下代码：

AudioManager am = (AudioManager) getSystemService(AUDIO_SERVICE);
        final int volume_level = am.getStreamVolume(AudioManager.STREAM_MUSIC);
        videoFile = getResources().getIdentifier("video", "raw", getApplicationContext().getPackageName());
        videoView = (VideoView) findViewById(R.id.video);
        mediaController = new MediaController(this);
        mediaController.setAnchorView(videoView);
        videoView.setMediaController(mediaController);
        mediaController = new MediaController(this, false);
        videoView.setVideoURI(Uri.parse("android.resource://" + getPackageName() + "/"
                + videoFile));
        videoView.start();
        ImageButton mute = (ImageButton) findViewById(R.id.mute);
        mute.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                // Set Volume
                if (volume_level != 0) {
                    videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {

                        @Override
                        public void onPrepared(MediaPlayer mp) {
                            if (mp.isPlaying()) {
                                mp.stop();
                                mp.release();
                                mp = new MediaPlayer();
                            }
                            mp.setVolume(0, 0);
                            mp.start();
                        }
                    });
                } else {
                    videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {

                        @Override
                        public void onPrepared(MediaPlayer mp) {
                            if (mp.isPlaying()) {
                                mp.stop();
                                mp.release();
                                mp = new MediaPlayer();
                            }
                            mp.setVolume(volume_level, volume_level);
                            mp.start();
                        }
                    });
                }

            }
        });

此致

Answer 1

我很确定您在应用监听器之前已经开始观看视频，请尝试遵循重新排列的代码。

AudioManager am = (AudioManager) getSystemService(AUDIO_SERVICE);
    final int volume_level = am.getStreamVolume(AudioManager.STREAM_MUSIC);
    videoFile = getResources().getIdentifier("video", "raw", getApplicationContext().getPackageName());
    videoView = (VideoView) findViewById(R.id.video);
    mediaController = new MediaController(this);
    mediaController.setAnchorView(videoView);
    videoView.setMediaController(mediaController);
    mediaController = new MediaController(this, false);
    videoView.setVideoURI(Uri.parse("android.resource://" + getPackageName() + "/"
            + videoFile));

    ImageButton mute = (ImageButton) findViewById(R.id.mute);
    mute.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            // Set Volume
            if (volume_level != 0) {
                videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {

                    @Override
                    public void onPrepared(MediaPlayer mp) {
                        if (mp.isPlaying()) {
                            mp.stop();
                            mp.release();
                            mp = new MediaPlayer();
                        }
                        mp.setVolume(0, 0);
                        mp.start();
                    }
                });
            } else {
                videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {

                    @Override
                    public void onPrepared(MediaPlayer mp) {
                        if (mp.isPlaying()) {
                            mp.stop();
                            mp.release();
                            mp = new MediaPlayer();
                        }
                        mp.setVolume(volume_level, volume_level);
                        mp.start();
                    }
                });
            }

        }
    });
videoView.start(); // start the video after setting up the listener.

我很肯定，这是未执行onPrepared回调的主要原因。

在Android上为视频静音按钮

1 个答案: