动态更改铃声有几个步骤.

准备铃声

File k = new File("/sdcard/ringtone", "kolyan_.mp3");

ContentValues values = new ContentValues();

values.put(MediaStore.MediaColumns.DATA, k.getAbsolutePath());

values.put(MediaStore.MediaColumns.TITLE, "My Song title");

values.put(MediaStore.MediaColumns.MIME_TYPE, "audio/mpeg");

values.put(MediaStore.Audio.Media.ARTIST, "Some Artist");

values.put(MediaStore.Audio.Media.IS_RINGTONE, true);

values.put(MediaStore.Audio.Media.IS_NOTIFICATION, false);

values.put(MediaStore.Audio.Media.IS_ALARM, false);

values.put(MediaStore.Audio.Media.IS_MUSIC, false);

2.将其插入数据库

Uri uri = MediaStore.Audio.Media.getContentUriForPath(k.getAbsolutePath());

// Line below is major because we need to delete old entry

getContentResolver().delete(uri, MediaStore.MediaColumns.DATA + "=\"" + k.getAbsolutePath() + "\"", null);

mUri = getContentResolver().insert(uri, values);

3.保存当前的默认铃声并订阅CallListener

// Be careful by calling getActualDefaultRingtoneUri in CallListener, it could return null, better way to save it in OnCreate

mOldUri = RingtoneManager.getActualDefaultRingtoneUri(this, RingtoneManager.TYPE_RINGTONE);

TelephonyManager mTelephonyMgr = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);

mTelephonyMgr.listen(new MyCallListener(), PhoneStateListener.LISTEN_CALL_STATE);

4.创建MyCallListener类

class MyCallListener extends PhoneStateListener {

@Override

public void onCallStateChanged(int state, String incomingNumber) {

switch (state) {

case TelephonyManager.CALL_STATE_RINGING:

// On call you replace the ringtone with your own mUri

RingtoneManager.setActualDefaultRingtoneUri(

MainActivity.this,

RingtoneManager.TYPE_RINGTONE,

mUri

);

break;

case TelephonyManager.CALL_STATE_IDLE:

// Restore the default ringtone

RingtoneManager.setActualDefaultRingtoneUri(

MainActivity.this,

RingtoneManager.TYPE_RINGTONE,

mOldUri

);

break;

default:

break;

}

super.onCallStateChanged(state, incomingNumber);

}

}

5.向您安装AndroidManifest.xml的权限

完成

主要想法是挂接来电,用自己的方式取代铃声.当然,您应该在通话后将默认铃声恢复为保存的值.