如果使用静态方法MediaPlayer.create(context，id)，我可以播放本地mp3，但如果使用非静态方法MediaPlayer.setDataSource(String)，则无法正常播放。发生的是，当我调用MediaPlayer.prepare()时，我收到了一个同步异常:
prepare exceptionjava.io.IOException: Prepare failed.: status=0x1
这是我的代码(省略了日志记录):

String filename = "android.resource://" + this.getPackageName() + "/raw/test0";

mp = new MediaPlayer();
try { mp.setDataSource(filename); } catch (Exception e) {}
try { mp.prepare(); } catch (Exception e) {}
mp.start();

最佳答案

替代解决方案1:使用Resources.getIdentifier()

为什么不使用getResources()。getIdentifier()获取资源ID并照常使用静态MediaPlayer.create()？

public int getIdentifier (String name, String defType, String defPackage)

 MediaPlayer mp;
 //String filename = "android.resource://" + this.getPackageName() + "/raw/test0";
 mp=MediaPlayer.create(getApplicationContext(), getResources().getIdentifier("test0","raw",getPackageName()));
 mp.start();

String filename = "android.resource://" + this.getPackageName() + "/raw/test0";

mp = new MediaPlayer();
try { mp.setDataSource(this,Uri.parse(filename)); } catch (Exception e) {}
try { mp.prepare(); } catch (Exception e) {}
mp.start();

public void setDataSource(String path)
            throws IOException, IllegalArgumentException, SecurityException, IllegalStateException {
        setDataSource(path, null, null);
    }

{
        final Uri uri = Uri.parse(path);
        final String scheme = uri.getScheme();
        if ("file".equals(scheme)) {
            path = uri.getPath();
        } else if (scheme != null) {
            // handle non-file sources
            nativeSetDataSource(
                MediaHTTPService.createHttpServiceBinderIfNecessary(path),
                path,
                keys,
                values);
            return;
        }
        final File file = new File(path);
        if (file.exists()) {
            FileInputStream is = new FileInputStream(file);
            FileDescriptor fd = is.getFD();
            setDataSource(fd);
            is.close();
        } else {
            throw new IOException("setDataSource failed.");
        }
}

Prepare failed.: status=0x1

    AssetFileDescriptor fd = null;
    try {
        ContentResolver resolver = context.getContentResolver();
        fd = resolver.openAssetFileDescriptor(uri, "r");
        //  :
        //  :
        //  :
        if (fd.getDeclaredLength() < 0) {
                setDataSource(fd.getFileDescriptor());
            } else {
                setDataSource(fd.getFileDescriptor(), fd.getStartOffset(), fd.getDeclaredLength());
            }

import android.media.MediaPlayer;

        player = new MediaPlayer();       //26
        player.setDataSource(fileName);   //27
        player.prepare();                 //28

        private MediaPlayer player;       //218

don't know exactly how the mediaPlayer works but everything in res/raw or bin/data gets copied to /sdcard/cc.openframeworks.packagename

    try{
      Log.d("RESURI", this.getClass().getClassLoader().getResource("res/raw/test0").toURI().toString());
    } 
    catch(Exception e) {

    }

jar:file:/data/app/<packagename>/<apkname>.apk!/res/raw/test0

关于java - MediaPlayer.setDataSource(String)不适用于本地文件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33086417/