android - 播放 DIRECTORY_MUSIC 中的歌曲

Question

我使用以下方法将文件保存到音乐目录中：

request.setDestinationInExternalPublicDir(Environment.DIRECTORY_MUSIC, "SpaceJam.mp3");

在我的主要活动中，我现在想访问它并播放它。

如何检索歌曲的信息以便可以将其用于：

mp.setDataSource(??);

“mp”是我的 MediaPlayer 的名称。谢谢。

Answer 1

    File path = Environment.getExternalStoragePublicDirectory(
            Environment.DIRECTORY_MUSIC);
     File file = new File(path, "Hunny.mp3");
    try {
        mp.setDataSource(file.toString());
    } catch (IllegalArgumentException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (SecurityException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IllegalStateException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

Answer 2

如果您有外部存储，则类似这样：

 File path = Environment.getExternalStoragePublicDirectory(
        Environment.DIRECTORY_MUSIC);
 File file = new File(path, "SpaceJam.mp3");

....

Answer 3

File path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC);
File file = new File(path, "SpaceJam.mp3");
MediaPlayer mp = new MediaPlayer();
mp.setDataSource(file.getAbsolutePath());
mp.prepare();
mp.start();

编辑：

mp.setDataSource(file.getAbsolutePath());