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. */          @Override          public 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()               {                  @Override                  public 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RINGTONE                          intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TYPE, RingtoneManager.TYPE_RINGTONE);                          //设置显示的title                          intent.putExtra(RingtoneManager.EXTRA_RINGTONE_TITLE, "设置来电铃声");                          //当设置完成之后返回到当前的Activity                          startActivityForResult(intent, ButtonRingtone);                      }                  }              });              /* 设置闹钟铃声 */              mButtonAlarm.setOnClickListener(new Button.OnClickListener()               {                  @Override                  public 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title                          intent.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Activity                          startActivityForResult(intent, ButtonAlarm);                      }                  }              });              /* 设置通知铃声 */              mButtonNotification.setOnClickListener(new Button.OnClickListener()               {                  @Override                  public 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title                          intent.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Activity                          startActivityForResult(intent, ButtonNotification);                      }                  }              });          }          /* 当设置铃声之后的回调函数 */          @Override          protected void onActivityResult(int requestCode, int resultCode, Intent data)          {              // TODO Auto-generated method stub              if (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 block          e.printStackTrace();      }             player.start();          }