>我正在尝试开发一个应用程序(广播流(应用程序,我想获取该媒体元数据检索器 API 的广播中播放的歌曲的详细信息,但是当我设置 URL 时,我收到此错误:
java.lang.IllegalArgumentException 在 android.media.MediaMetadataRetriever.setDataSource(MediaMetadataRetriever.java:71( 在 maa.myapp.MainActivity$PlayerTask.onPostExecute(MainActivity.java:447( 在 maa.myapp.MainActivity$PlayerTask.onPostExecute(MainActivity.java:419(
这是我的代码:
MediaPlayer mediaPlayer;
String stream = "https://plaza.one/mp3";
boolean prepared =false;
boolean started =false ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mediaPlayer = new MediaPlayer();
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
AudioAttributes attribs = new AudioAttributes.Builder().setUsage(AudioAttributes.USAGE_MEDIA).setContentType(AudioAttributes.CONTENT_TYPE_MUSIC).build();
mediaPlayer.setAudioAttributes(attribs);
} else {
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
}
new PlayerTask().execute(stream);
}
public class PlayerTask extends AsyncTask<String,Void,Boolean> {
@Override
protected void onPreExecute() {
super.onPreExecute();
loadingRL.setVisibility(View.VISIBLE);
}
@Override
protected Boolean doInBackground(String... strings) {
try {
mediaPlayer.reset();
mediaPlayer.setDataSource(strings[0]);
prepared=true;
mediaPlayer.prepare();
} catch (IOException e) {
e.printStackTrace();
}
return prepared;
}
@Override
protected void onPostExecute(Boolean aBoolean) {
super.onPostExecute(aBoolean);
/*get details : */
MediaMetadataRetriever mMediaMetaDataRetriever = new MediaMetadataRetriever();
mMediaMetaDataRetriever.setDataSource(stream,new HashMap<String, String>());
String titleName = mMediaMetaDataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_TITLE);
Toast.makeText(MainActivity.this, "Title : "+titleName, Toast.LENGTH_SHORT).show();
}
}
}
最后它适用于'com.vodyasov:amr:0.5'库
Uri uri = Uri.parse(stream);
OnNewMetadataListener listener = new OnNewMetadataListener() {
@Override
public void onNewHeaders(String stringUri, List<String> name, List<String> desc, List<String> br, List<String> genre, List<String> info) {}
@Override
public void onNewStreamTitle(String stringUri, String streamTitle) {
songinfo.setText("Song Name : "+streamTitle);
}
};
AudiostreamMetadataManager.getInstance()
.setUri(uri)
.setOnNewMetadataListener(listener)
.setUserAgent(UserAgent.WINDOWS_MEDIA_PLAYER)
.start();
试试这个:
@Override
protected void onPostExecute(Boolean aBoolean) {
super.onPostExecute(aBoolean);
MediaMetadataRetriever mmr = new MediaMetadataRetriever();
if (Build.VERSION.SDK_INT >= 14){
mmr.setDataSource(stream, new HashMap<String, String>());
}else {
mmr.setDataSource(stream);
}
String titleName = mmr.extractMetadata(MediaMetadataRetriever.METADATA_KEY_TITLE));
Toast.makeText(MainActivity.this, "Title : "+titleName, Toast.LENGTH_SHORT).show();
}
如果这不起作用,那么您应该确保您使用的链接实际上返回了一个文件。
尝试在 onCreate
中执行上述操作,问题可能与您的 AsyncTask 有关。