Question

我正在尝试播放我在项目中保存的视频。我已下载this （.mp4测试视频）然后在项目的根目录中创建了一个名为vid的文件夹。然后我使用了这段代码：

public void PlayLocalVideo(View view)
    {
    VideoView video=(VideoView) findViewById(R.id.video1);
    MediaController mediaController = new MediaController(this);
    mediaController.setAnchorView(video);
    video.setMediaController(mediaController);
    video.setKeepScreenOn(true);
    video.setVideoPath("android.resource://uk.co.SplashActivity/vid/big_buck_bunny.mp4");
    video.start();
    video.requestFocus();
}

我的xml看起来像这样：

<VideoView
    android:id="@+id/video1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

PlayLocalVideo是我用于按钮上的onclick事件的方法。但是当我按下播放时没有任何反应：（

Answer 1

只需将文件粘贴到 res / raw / big_buck_bunny.mp4 而不是vid文件夹并更改您的videoPath：

video.setVideoPath("android.resource://" + getPackageName() + "/" + R.raw.big_buck_bunny);

Answer 2

问题可能出在Android操作系统缺陷中，这使您无法正常访问超过1Mb大小的文件Load files bigger than 1M from assets folder

您可能需要将视频文件拆分为1Mb大小的部分。然后将这些部分合并到SD卡上的一个文件中并播放它。

例如，我已将big_buck_bunny.mp4分为5个部分big_buck_bunny.mp4.part0，big_buck_bunny.mp4.part1等等。要合并它们，您可以使用此方法

private void copyVideoFromAssets(String inFilePrefix, String outFileName) throws IOException {
    // Get list of files in assets and sort them
    final String[] assetsFiles = getAssets().list("");
    Arrays.sort(assetsFiles);

    // Open the empty file as the output stream
    final OutputStream output = new FileOutputStream(outFileName);
    byte[] buffer = new byte[1024 * 128];

    for (String file: assetsFiles) {
        if (file.startsWith(inFilePrefix)) {
            // Open part of file stored in assets as the input stream
            final InputStream input = getAssets().open(file);

            // Transfer bytes from the input file to the output file
            int length = input.read(buffer);
            while (length > 0) {
                output.write(buffer, 0, length);
                length = input.read(buffer);
            }
            input.close();
        }
    }

    // Close the streams
    output.flush();
    output.close();
}

public void PlayLocalVideo(View view)
    try {
        copyVideoFromAssets("big_buck_bunny.mp4.part", "/mnt/sdcard/big_buck_bunny.mp4");
    } catch (IOException e) {
        e.printStackTrace();
    }

    VideoView video=(VideoView) findViewById(R.id.video);
    MediaController mediaController = new MediaController(this);
    mediaController.setAnchorView(video);
    video.setMediaController(mediaController);
    video.setKeepScreenOn(true);
    video.setVideoPath("/mnt/sdcard/big_buck_bunny.mp4");
    video.start();
    video.requestFocus();
}

Answer 3

试试这个代码......

首先在res目录中创建文件夹名称raw，将视频复制到该文件夹中并试用此代码...

    video1=(VideoView)findViewById(R.id.myvideoview);
    video1.setVideoURI(Uri.parse("android.resource://" +getPackageName()+ "/"+R.raw.YOUR_VIDEO_FILE_NAME));
    video1.setMediaController(new MediaController(this));
    video1.requestFocus();
    video1.start();

Android：使用mediaplayer播放本地视频

3 个答案: