ExoPlayer - 如何播放本地mp3文件

Question

我正在尝试使用ExoPlayer而不是MediaPlayer,因为它是MediaPlayer返回错误的getCurrentPosition()的常见错误,我需要替代品.

但是我无法在任何地方找到如何通过文件路径打开本地文件的信息,该文件路径与MediaPlayer相同 .setDataSource(String filepath)

Google没有任何示例,官方文档网站在两台计算机上都奇怪地崩溃了我的FireFox浏览器

Answer 1

可以修改github中的ExoPlayer演示应用程序以播放本地文件.为此,请修改https://github.com/google/ExoPlayer/blob/master/demo/src/main/java/com/google/android/exoplayer/demo/Samples.java文件以添加新视频集.

public static final Sample[] LOCAL_VIDEOS = new Sample[] {
   new Sample("Some User friendly name of video 1",
     "/mnt/sdcard/video1.mp4", DemoUtil.TYPE_OTHER),
  new Sample("Some User friendly name of video 2",
    "/mnt/sdcard/video2.mp4", DemoUtil.TYPE_OTHER),
};

为此,请编辑https://github.com/google/ExoPlayer/blob/master/demo/src/main/java/com/google/android/exoplayer/demo/Samples.java文件以添加新的示例集.

sampleAdapter.add(new Header("Local Videos"));
sampleAdapter.addAll((Object[]) Samples.LOCAL_VIDEOS);

Answer 2

对Srikanth Peddibhotla的代码进行了一些小修改

Samples.java中文件的Uri字符串应为"file:///mnt/sdcard/YourFilename.mp4"而不是"/mnt/sdcard/YourFilename.mp4"

public static final Sample[] LOCAL_VIDEOS = new Sample[] {
new Sample("Some User friendly name of video 1",
 "file:///mnt/sdcard/video1.mp4", DemoUtil.TYPE_MP4),
new Sample("Some User friendly name of video 2",
"file:///mnt/sdcard/video2.mp4", DemoUtil.TYPE_MP4),
}; 

另外,将以下行添加到SampleChooserActivity.java

 sampleAdapter.add(new Header("Local Videos"));
 sampleAdapter.addAll((Object[]) Samples.LOCAL_VIDEOS);