在android系统中，不同铃声存放的铃声路径：

/system/media/audio/ringtones        来电铃声/system/media/audio/notifications        短信通知铃声/system/media/audio/alarms        闹钟铃声

铃声的设置：

import java.io.File;import android.app.Activity;
import android.content.Intent;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class Activity01 extends Activity
{/* 3个按钮 */private Button mButtonRingtone;private Button mButtonAlarm;private Button mButtonNotification;/* 自定义的类型 */public static final int ButtonRingtone			= 0;public static final int ButtonAlarm				= 1;public static final int ButtonNotification		= 2;/* 铃声文件夹 */private String strRingtoneFolder = "/sdcard/music/ringtones";private String strAlarmFolder = "/sdcard/music/alarms";private String strNotificationFolder = "/sdcard/music/notifications";/** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.main);mButtonRingtone = (Button) findViewById(R.id.ButtonRingtone);mButtonAlarm = (Button) findViewById(R.id.ButtonAlarm);mButtonNotification = (Button) findViewById(R.id.ButtonNotification);/* 设置来电铃声 */mButtonRingtone.setOnClickListener(new Button.OnClickListener() {@Overridepublic void onClick(View arg0){if (bFolder(strRingtoneFolder)){//打开系统铃声设置Intent intent = new Intent(RingtoneManager.ACTION_RINGTONE_PICKER);//类型为来电RINGTONEintent.putExtra(RingtoneManager.EXTRA_RINGTONE_TYPE, RingtoneManager.TYPE_RINGTONE);//设置显示的titleintent.putExtra(RingtoneManager.EXTRA_RINGTONE_TITLE, "设置来电铃声");//当设置完成之后返回到当前的ActivitystartActivityForResult(intent, ButtonRingtone);}}});/* 设置闹钟铃声 */mButtonAlarm.setOnClickListener(new Button.OnClickListener() {@Overridepublic void onClick(View arg0){if (bFolder(strAlarmFolder)){//打开系统铃声设置Intent intent = new Intent(RingtoneManager.ACTION_RINGTONE_PICKER);//设置铃声类型和titleintent.putExtra(RingtoneManager.EXTRA_RINGTONE_TYPE, RingtoneManager.TYPE_ALARM);intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TITLE, "设置闹铃铃声");//当设置完成之后返回到当前的ActivitystartActivityForResult(intent, ButtonAlarm);}}});/* 设置通知铃声 */mButtonNotification.setOnClickListener(new Button.OnClickListener() {@Overridepublic void onClick(View arg0){if (bFolder(strNotificationFolder)){//打开系统铃声设置Intent intent = new Intent(RingtoneManager.ACTION_RINGTONE_PICKER);//设置铃声类型和titleintent.putExtra(RingtoneManager.EXTRA_RINGTONE_TYPE, RingtoneManager.TYPE_NOTIFICATION);intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TITLE, "设置通知铃声");//当设置完成之后返回到当前的ActivitystartActivityForResult(intent, ButtonNotification);}}});}/* 当设置铃声之后的回调函数 */@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data){// TODO Auto-generated method stubif (resultCode != RESULT_OK){return;}switch (requestCode){case ButtonRingtone:try{//得到我们选择的铃声Uri pickedUri = data.getParcelableExtra(RingtoneManager.EXTRA_RINGTONE_PICKED_URI);//将我们选择的铃声设置成为默认if (pickedUri != null){RingtoneManager.setActualDefaultRingtoneUri(Activity01.this, RingtoneManager.TYPE_RINGTONE, pickedUri);}}catch (Exception e){}break;case ButtonAlarm:try{//得到我们选择的铃声Uri pickedUri = data.getParcelableExtra(RingtoneManager.EXTRA_RINGTONE_PICKED_URI);//将我们选择的铃声设置成为默认if (pickedUri != null){RingtoneManager.setActualDefaultRingtoneUri(Activity01.this, RingtoneManager.TYPE_ALARM, pickedUri);}}catch (Exception e){}break;case ButtonNotification:try{//得到我们选择的铃声Uri pickedUri = data.getParcelableExtra(RingtoneManager.EXTRA_RINGTONE_PICKED_URI);//将我们选择的铃声设置成为默认if (pickedUri != null){RingtoneManager.setActualDefaultRingtoneUri(Activity01.this, RingtoneManager.TYPE_NOTIFICATION, pickedUri);}}catch (Exception e){}break;}super.onActivityResult(requestCode, resultCode, data);}//检测是否存在指定的文件夹 //如果不存在则创建private boolean bFolder(String strFolder){boolean btmp = false;File f = new File(strFolder);if (!f.exists()){if (f.mkdirs()){btmp = true;}else{btmp = false;}}else{btmp = true;}return btmp;}
}

铃声的播放：

  player = new MediaPlayer();try{player.setDataSource(context, pickUri);}catch(Exception e){e.printStackTrace();}final AudioManager  audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);if(audioManager.getStreamVolume(AudioManager.STREAM_ALARM)!=0){player.setAudioStreamType(AudioManager.STREAM_ALARM);player.setLooping(true);try {player.prepare();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}player.start();}