Question

我试过播放视频，但在VideoView中没有显示任何内容这是我的代码：

 tvvid.setMediaController(new MediaController(AllPostActivity.this));
 tvvid.setVideoURI(Uri.parse("content://media/external/video/media/89962"));
 tvvid.requestFocus();
 tvvid.start();

我已将输出生成为视频file "content://media/external/video/media/89962" 如何使用上述视频路径在videoView中播放视频。

我已尝试通过此路径/storage/emulated/0/WhatsApp/Media/WhatsApp Video/VID-20171208-WA0004.mp4仍然没有显示任何内容

打开/ sys / class / power_supply / bms / resistance时出错 java.io.FileNotFoundException：/ sys / class / power_supply / bms / resistance：打开失败：ENOENT（没有这样的文件或目录）在libcore.io.IoBridge.open（IoBridge.java:452）在java.io.FileInputStream。（FileInputStream.java:76）在java.io.FileInputStream。（FileInputStream.java:103）在java.io.FileReader。（FileReader.java:66）在com.motorola.motocare.util.LineReader。（LineReader.java:20）在com.motorola.motocare.util.LineReader $ 1.（LineReader.java:53）在com.motorola.motocare.util.LineReader.firstLineReader（LineReader.java:53）在com.motorola.motocare.util.BatteryUtils.getBatteryResistance（BatteryUtils.java:130）在com.motorola.motocare.action.BatteryLevelAction.onReceiveImpl（BatteryLevelAction.java:42） at com.motorola.motocare.util.BackgroundReceiver $ 1.run（BackgroundReceiver.java:14）在android.os.Handler.handleCallback（Handler.java:746）在android.os.Handler.dispatchMessage（Handler.java:95）在android.os.Looper.loop（Looper.java:148）在android.os.HandlerThread.run（HandlerThread.java:61）引起：android.system.ErrnoException：open failed：ENOENT（没有这样的文件或目录） at libcore.io.Posix.open（Native Method）在libcore.io.BlockGuardOs.open（BlockGuardOs.java:186）

Answer 1

以下是完整的工作代码：

import android.media.MediaPlayer;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.view.MotionEvent;
import android.view.View;
import android.widget.MediaController;
import java.io.File;
public class VideoPlayerActivity extends AppCompatActivity implements View.OnClickListener {

    private File mainMashupVideoFileName = "your_file_path/file_name.mp4";

    private void playMyVideoView(File fileName, boolean isMainMashup) {
        MediaController mediaController = new MediaController(this);
        mediaController.setAnchorView(videoView);
        vv_main_video.setMediaController(mediaController);
        vv_main_video.setVideoURI(Uri.fromFile(fileName));

        vv_main_video.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            @Override
            public void onPrepared(MediaPlayer mp) {
                //Resource has been loaded to the video view player and ready to play.
            }
        });

        vv_main_video.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
            @Override
            public void onCompletion(MediaPlayer mp) {
                //Can change play pause icon
            }
        });

        vv_main_video.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                //playPauseVideos();
                return false;
            }
        });

        vv_main_video.setOnErrorListener(new MediaPlayer.OnErrorListener() {
            @Override
            public boolean onError(MediaPlayer mp, int what, int extra) {
                //Do nothing
                return true;
            }
        });

        vv_main_video.requestFocus();
        vv_main_video.start();
    } //End of  run VideoView

    private void playPauseVideos() {
        if (vv_main_video.isPlaying()) {
            vv_main_video.pause();
        } else {
            vv_main_video.requestFocus();
            vv_main_video.start();
        }
    }
}

在清单中添加以下权限：

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

必须检查是否已为您的应用启用了权限。

尝试告诉我您的反馈意见。

如何在videoview中播放视频

1 个答案: