Android 如何从 MediaPlayer 获取当前播放的歌曲详细信息
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原文地址: http://stackoverflow.com/questions/3616956/
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How to get current playing song details from MediaPlayer
提问by Eby
Is there any way to get the details of current song played by MediaPlayer?
有没有办法获得MediaPlayer播放的当前歌曲的详细信息？
回答by JohnUopini
Just for reference, this works:
仅供参考，这有效：
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.util.Log;
public class MediaPlayer extends Activity {
public static final String SERVICECMD = "com.android.music.musicservicecommand";
public static final String CMDNAME = "command";
public static final String CMDTOGGLEPAUSE = "togglepause";
public static final String CMDSTOP = "stop";
public static final String CMDPAUSE = "pause";
public static final String CMDPREVIOUS = "previous";
public static final String CMDNEXT = "next";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
IntentFilter iF = new IntentFilter();
iF.addAction("com.android.music.metachanged");
iF.addAction("com.android.music.playstatechanged");
iF.addAction("com.android.music.playbackcomplete");
iF.addAction("com.android.music.queuechanged");
registerReceiver(mReceiver, iF);
}
private BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent)
{
String action = intent.getAction();
String cmd = intent.getStringExtra("command");
Log.d("mIntentReceiver.onReceive ", action + " / " + cmd);
String artist = intent.getStringExtra("artist");
String album = intent.getStringExtra("album");
String track = intent.getStringExtra("track");
Log.d("Music",artist+":"+album+":"+track);
}
};
}
回答by fredley
There is no documented methodfor getting info on the currently playing file from a MediaPlayer instance, you'll need to make your app store that information itself in another way. If you're using a Service to keep track of your MediaPlayer instance (which I'd recommend) then this shouldn't be too hard.
没有用于从 MediaPlayer 实例获取有关当前播放文件的信息的文档化方法，您需要让您的应用程序以另一种方式存储该信息本身。如果您使用 Service 来跟踪您的 MediaPlayer 实例（我建议这样做），那么这应该不会太难。
回答by DeRagan
I think you need to have your own model classes from wherein you can set and get your song title. For this and other information, see Stack Overflow question:
How to set the PlayList Index for Mediaplayer(ExpressionMediaPlayer:Mediaplayer).
我认为您需要拥有自己的模型类，您可以从中设置和获取歌曲名称。有关此信息和其他信息，请参阅堆栈溢出问题：
如何为 Mediaplayer(ExpressionMediaPlayer:Mediaplayer) 设置播放列表索引。
If you are keen to know how it is being implemented, you can get the sourceand see how they have implemented.
如果您想知道它是如何实施的，您可以获取源代码并查看它们是如何实施的。
回答by Toxid
I learned how to do it just now, so I don't know if it works on all versions of android yet.
我刚刚学会了怎么做，所以我不知道它是否适用于所有版本的android。
private void getTrackInfo(Uri audioFileUri) {
MediaMetadataRetriever metaRetriever= new MediaMetadataRetriever();
metaRetriever.setDataSource(getRealPathFromURI(audioFileUri));
String artist = metaRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_ARTIST);
String title = metaRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_TITLE);
}
private String getRealPathFromURI(Uri uri) {
File myFile = new File(uri.getPath().toString());
String s = myFile.getAbsolutePath();
return s;
}
