Android 检测视频视图是否正在缓冲

有人知道是否有可能检测到视频视图正在缓冲吗

我想在视频缓冲时显示ProgressDialog

    final ProgressDialog bufferingDialog;
    bufferingDialog = ProgressDialog.show(context,
            "Buffering", "Please wait", true, true);

    VideoView videoView;
    videoView = (VideoView) findViewById(R.id.video_view);
    videoView.setVideoPath(path);
    videoView.setMediaController(new MediaController(context));
    videoView.requestFocus();
    videoView.start();
    videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
        @Override
        public void onPrepared(MediaPlayer mp) {
            mp.setOnInfoListener(new MediaPlayer.OnInfoListener() {
                @Override
                public boolean onInfo(MediaPlayer mp, int what, int extra) {
                    if (what == MediaPlayer.MEDIA_INFO_BUFFERING_START)
                        bufferingDialog.show();
                    if (what == MediaPlayer.MEDIA_INFO_BUFFERING_END)
                        bufferingDialog.dismiss();
                    return false;
                }
            });
        }
    });
    videoView.setOnErrorListener(new MediaPlayer.OnErrorListener() {
        @Override
        public boolean onError(MediaPlayer mp, int what, int extra) {
            bufferingDialog.dismiss();
            return false;
        }
    });

到目前为止，我尝试使用OnPreparedListener，但这只在视频首次加载时起作用。如果正在播放视频，并且用户将擦洗条移动到另一个点，则即使正在缓冲，视频仍处于“准备”状态

    final ProgressDialog bufferingDialog;
    bufferingDialog = ProgressDialog.show(context,
            "Buffering", "Please wait", true, true);

    VideoView videoView;
    videoView = (VideoView) findViewById(R.id.video_view);
    videoView.setVideoPath(path);
    videoView.setMediaController(new MediaController(context));
    videoView.requestFocus();
    videoView.start();
    videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
        @Override
        public void onPrepared(MediaPlayer mp) {
            mp.setOnInfoListener(new MediaPlayer.OnInfoListener() {
                @Override
                public boolean onInfo(MediaPlayer mp, int what, int extra) {
                    if (what == MediaPlayer.MEDIA_INFO_BUFFERING_START)
                        bufferingDialog.show();
                    if (what == MediaPlayer.MEDIA_INFO_BUFFERING_END)
                        bufferingDialog.dismiss();
                    return false;
                }
            });
        }
    });
    videoView.setOnErrorListener(new MediaPlayer.OnErrorListener() {
        @Override
        public boolean onError(MediaPlayer mp, int what, int extra) {
            bufferingDialog.dismiss();
            return false;
        }
    });

我还尝试了（我知道这很糟糕）一个异步线程，它只在isplay（）上忙着等待：

私有类BufferTask扩展了AsyncTask{
受保护的空位背景（空位…空位）{
最终视频视图视频视图=（视频视图）findviewbyd（R.id.video）；
而（！videoView.isPlaying（））{}
返回null；
}
受保护的void onPostExecute（void v）{
//在这里隐藏对话框。。。
}
}

这不起作用，因为只要调用start（），一个视频视图似乎就被视为正在播放，即使它正在缓冲

    final ProgressDialog bufferingDialog;
    bufferingDialog = ProgressDialog.show(context,
            "Buffering", "Please wait", true, true);

    VideoView videoView;
    videoView = (VideoView) findViewById(R.id.video_view);
    videoView.setVideoPath(path);
    videoView.setMediaController(new MediaController(context));
    videoView.requestFocus();
    videoView.start();
    videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
        @Override
        public void onPrepared(MediaPlayer mp) {
            mp.setOnInfoListener(new MediaPlayer.OnInfoListener() {
                @Override
                public boolean onInfo(MediaPlayer mp, int what, int extra) {
                    if (what == MediaPlayer.MEDIA_INFO_BUFFERING_START)
                        bufferingDialog.show();
                    if (what == MediaPlayer.MEDIA_INFO_BUFFERING_END)
                        bufferingDialog.dismiss();
                    return false;
                }
            });
        }
    });
    videoView.setOnErrorListener(new MediaPlayer.OnErrorListener() {
        @Override
        public boolean onError(MediaPlayer mp, int what, int extra) {
            bufferingDialog.dismiss();
            return false;
        }
    });

我能想到的唯一解决方案是构建一个自定义的VideoView类型类，这样我就可以访问它的MediaPlayer实例

---

有什么想法吗？谢谢你的阅读。

我正在做类似的工作，但没能想出一个好的解决方案。发布了一些有趣的解决方案，如果您没有看到它们，您应该查看它们

无论如何，我想出了下面的黑客，这是暗示在上面的线程和工程ok了

@Override
public void onBufferingUpdate(MediaPlayer mp, int percent) {
    float temp = ((float)mp.getCurrentPosition() / (float)mp.getDuration())*100;
    if(Math.abs(percent - temp) < 1) {
        buffer_fail++;
        if(buffer_fail == 15) {
            //buffer failed
        }
    }
}

@覆盖
public void onBufferingUpdate（MediaPlayer mp，整数百分比）{
浮动温度=（（浮动）mp.getCurrentPosition（）/（浮动）mp.getDuration（））*100；
如果（数学绝对值（温度百分比）<1）{
缓冲区失败++；
如果（缓冲区故障==15）{
//缓冲区失败
}
}
}

为了不实现自定义视频视图，我进行了以下攻击。其思想是每1秒检查一次当前位置是否与前1秒相同。如果是，则视频正在缓冲。如果没有，视频就真的在播放

final Handler handler = new Handler(); 
Runnable runnable = new Runnable() { 
    public void run() {
        int duration = videoView.getCurrentPosition();
        if (old_duration == duration && videoView.isPlaying()) {
            videoMessage.setVisibility(View.VISIBLE);
        } else {
            videoMessage.setVisibility(View.GONE);
        }
        old_duration = duration;

        handler.postDelayed(runnable, 1000);
    }
};
handler.postDelayed(runnable, 0);

videoMessage只是一个文本视图，文本“Buffering…”位于我的视频视图的中心。

因为，您现在可以从MediaPlayer访问InfoListener：

final MediaPlayer.OnInfoListener onInfoToPlayStateListener = new MediaPlayer.OnInfoListener() {

    @Override
    public boolean onInfo(MediaPlayer mp, int what, int extra) {
        switch (what) {
            case MediaPlayer.MEDIA_INFO_VIDEO_RENDERING_START: {
                mProgressBar.setVisibility(View.GONE);
                return true;
            }
            case MediaPlayer.MEDIA_INFO_BUFFERING_START: {
                mProgressBar.setVisibility(View.VISIBLE);
                return true;
            }
            case MediaPlayer.MEDIA_INFO_BUFFERING_END: {
                mProgressBar.setVisibility(View.GONE);
                return true;
            }
        }
        return false;
    }

});

mVideoView.setOnInfoListener(onInfoToPlayStateListener);

---

下面的代码将在每次VideoView缓冲时显示一个缓冲对话框

    final ProgressDialog bufferingDialog;
    bufferingDialog = ProgressDialog.show(context,
            "Buffering", "Please wait", true, true);

    VideoView videoView;
    videoView = (VideoView) findViewById(R.id.video_view);
    videoView.setVideoPath(path);
    videoView.setMediaController(new MediaController(context));
    videoView.requestFocus();
    videoView.start();
    videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
        @Override
        public void onPrepared(MediaPlayer mp) {
            mp.setOnInfoListener(new MediaPlayer.OnInfoListener() {
                @Override
                public boolean onInfo(MediaPlayer mp, int what, int extra) {
                    if (what == MediaPlayer.MEDIA_INFO_BUFFERING_START)
                        bufferingDialog.show();
                    if (what == MediaPlayer.MEDIA_INFO_BUFFERING_END)
                        bufferingDialog.dismiss();
                    return false;
                }
            });
        }
    });
    videoView.setOnErrorListener(new MediaPlayer.OnErrorListener() {
        @Override
        public boolean onError(MediaPlayer mp, int what, int extra) {
            bufferingDialog.dismiss();
            return false;
        }
    });

---

显示缓冲时进度的视频视图。
以下代码适用于我：

videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            @Override
            public void onPrepared(final MediaPlayer mp) {
                mp.start();
                mp.setOnInfoListener(new MediaPlayer.OnInfoListener() {
                    @Override
                    public boolean onInfo(MediaPlayer mp, int what, int extra) {
                        switch (what) {
                            case MediaPlayer.MEDIA_INFO_VIDEO_RENDERING_START: {
                                progressBar.setVisibility(View.GONE);
                                return true;
                            }
                            case MediaPlayer.MEDIA_INFO_BUFFERING_START: {
                                progressBar.setVisibility(View.VISIBLE);
                                return true;
                            }
                            case MediaPlayer.MEDIA_INFO_BUFFERING_END: {
                                progressBar.setVisibility(View.GONE);
                                return true;
                            }
                        }
                        return false;
                    }
                });
            }
        });

这对我有用

boolean b_start = true;
boolean b_end = true;                                                                  
 final MediaPlayer.OnInfoListener onInfoToPlayStateListener = new MediaPlayer.OnInfoListener() {

        @Override
        public boolean onInfo(MediaPlayer mp, int what, int extra) {
            switch (what) {
                case MediaPlayer.MEDIA_INFO_VIDEO_RENDERING_START: {
                    dialog1.setVisibility(View.GONE);
                    b_end = false;
                    b_start = false;

                }
                case MediaPlayer.MEDIA_INFO_BUFFERING_START: {
                    if (b_start){
                    dialog1.setVisibility(View.VISIBLE);
                    }
                    b_start = true;

                }
                case MediaPlayer.MEDIA_INFO_BUFFERING_END: {
                    if(b_end){
                    dialog1.setVisibility(View.VISIBLE);
                    }
                    b_end = true;
                }
            }
            return false;
        }

    };


    videoView.setOnInfoListener(onInfoToPlayStateListener);

---

这不能在VideoView中使用。因此，请将它与从VideoView.setOnPreparedListener获得的MediaPlayer配合使用。这看起来像是一段递归指数内存消耗程序代码。不是吗？您的问题解决了吗？我们不应该隐藏缓冲端的进度吗？欢迎来到堆栈溢出！请不要把你的源代码扔在这里。试着对你的答案作一个很好的描述。见：