Question

http://developer.android.com/vis/android/media/MediaPlayer.html“rel=“noretinger”>MediaPlayer?

Answer 1

仅供参考:

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);
}
};
}

Answer 2

没有任何 rel=“noreferer” 记录的方法 ,用于从媒体Player一案中查阅目前竞争档案,你需要以另一种方式储存这些信息。如果你重新利用一个服务机构跟踪你的新闻报道(我建议这样做),那就太困难了。

Answer 3

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).

如果你非常想知道如何执行,你可以取得https://android.googlesource.com/platform/ Packages/apps/Music/+/master” rel=“nofollow noreferer”>source ,并了解它们是如何实施的。

Answer 4

我知道现在如何做到这一点,因此我不知道它是否正在处理所有版本的roid。

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;
}

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