无法为 videoview 播放此视频

Question

我知道这个问题已经被问过很多次了。我已经尝试了许多前面提到的解决方案，比如提高 API 级别、更改 android 设备、更改视频、更改视频格式。每次都出现同样的错误。我正在使用 Nexus 6p，运行 Oreo 8.1，最低 API 类似于 Marshmellow。 xml代码：

<VideoView
            android:background="@color/colorPrimaryDark"
            android:layout_height="600dp"
            android:layout_width="fill_parent"
            android:id="@+id/VideoView" />

        <Button
            android:text="@string/play"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:onClick="onButtonClick"
            android:background="@color/colorPrimary"
            android:id="@+id/button"/>

java代码：

public class IntroVideoActivity extends AppCompatActivity {
VideoView VideoView;
Button button;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_intro_video);
        VideoView = (VideoView) findViewById(R.id.VideoView);
        button = (Button) findViewById(R.id.button);
        }
        public void onButtonClick (View v) {
        String videopath = "android.resource://com.example.nisat.favor"+R.raw.anime;
        Uri uri = Uri.parse(videopath);
        VideoView.setVideoURI(uri);
        VideoView.start();
        }
}

我也试过这段代码：

VideoView videoView = (VideoView)findViewById(R.id.VideoView);
        MediaController mediaController = new MediaController(this);
         mediaController.setAnchorView(videoView);
        videoView.setMediaController(mediaController);

        videoView.setVideoPath("vectorvideo");

        videoView.start();

Answer 1

视频必须采用受支持的格式（3gp、wmv、mp4），并在文件名中使用小写字母、数字、下划线和圆点命名：video_file.mp4。

代替

String videopath = "android.resource://com.example.nisat.favor"+R.raw.anime;

试试

String videopath = "android.resource://" + getPackageName() + "/" + R.raw.anime;

Answer 2

检查您的方法何时被调用？

onButtonClicked(查看 v)

尝试此代码并首先尝试不单击按钮，如果它有效，然后在单击按钮时调用它。我在我的活动中使用它，它工作正常。

String basePath = "android.resource://" + getPackageName() +"/"+"/raw/";
Intent intent = getIntent();
String videoName = intent.getStringExtra(VIDEO_NAME);
final boolean videoRepeat = intent.getBooleanExtra(VIDEO_REPEAT, false);
Uri videoUri = Uri.parse(basePath+videoName);
VideoView videoPlayer = (VideoView) findViewById(R.id.videoPlayer);
MediaController mc = new MediaController(this);
mc.setAnchorView(videoPlayer);
mc.setMediaPlayer(videoPlayer);
mc.setVisibility(View.GONE);
videoPlayer.setMediaController(mc);
videoPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
    @Override
    public void onCompletion(MediaPlayer mp) {
        if(!videoRepeat){
            finish();
        }
    }
});
videoPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
    @Override
    public void onPrepared(MediaPlayer mp) {
        if(videoRepeat) {
            mp.setLooping(true);
        }else{
            mp.setLooping(false);
        }
    }
});
videoPlayer.setVideoURI(videoUri);
videoPlayer.start();

Answer 3

    use this code 
mention permission in AndroidManifest.xml

    <uses-permission android:name="android.permission.INTERNET"></uses-permission>

and this line of code inside the MainActivity.class

            String videopath = "android.resource://com.example.cloudanalogy.play_video/"+R.raw.a;
            Uri vidUri = Uri.parse(videopath);
            videoView.setVideoURI(vidUri);
            videoView.start();
            MediaController mediaController = new MediaController(this);
            mediaController.setAnchorView(videoView);
            videoView.setMediaController(mediaController);