代码出自 Settings\src\com\android\settings\notification\SoundSettings.java

    1.     private static CharSequence updateRingtoneName(Context context, int type) {
    2.         if (context == null) {
    3.             Log.e(TAG, "Unable to update ringtone name, no context provided");
    4.             return null;
    5.         }
    6.         Uri ringtoneUri = RingtoneManager.getActualDefaultRingtoneUri(context, type);
    7.         CharSequence summary = context.getString(com.android.internal.R.string.ringtone_unknown);
    8.         // Is it a silent ringtone?
    9.         if (ringtoneUri == null) {
    10.             summary = context.getString(com.android.internal.R.string.ringtone_silent);
    11.         } else {
    12.             Cursor cursor = null;
    13.             try {
    14.                 if (MediaStore.AUTHORITY.equals(ringtoneUri.getAuthority())) {
    15.                     // Fetch the ringtone title from the media provider
    16.                     cursor = context.getContentResolver().query(ringtoneUri,
    17.                             new String[] { MediaStore.Audio.Media.TITLE }, null, null, null);
    18.                 } else if (ContentResolver.SCHEME_CONTENT.equals(ringtoneUri.getScheme())) {
    19.                     cursor = context.getContentResolver().query(ringtoneUri,
    20.                             new String[] { OpenableColumns.DISPLAY_NAME }, null, null, null);
    21.                 }
    22.                 if (cursor != null) {
    23.                     if (cursor.moveToFirst()) {
    24.                         summary = cursor.getString(0);
    25.                     }
    26.                 }
    27.             } catch (SQLiteException sqle) {
    28.                 // Unknown title for the ringtone
    29.             } catch (IllegalArgumentException iae) {
    30.                 // Some other error retrieving the column from the provider
    31.             } finally {
    32.                 if (cursor != null) {
    33.                     cursor.close();
    34.                 }
    35.             }
    36.         }
    37.         return summary;
    38.     }

    type 取值： RingtoneManager.TYPE_RINGTONE RingtoneManager.TYPE_NOTIFICATION RingtoneManager.TYPE_ALARM

    调用方式：

    1. CharSequence summary = updateRingtoneName(mContext, RingtoneManager.TYPE_RINGTONE);
    2. CharSequence summary = updateRingtoneName(mContext, RingtoneManager.TYPE_NOTIFICATION);
    3. CharSequence summary = updateRingtoneName(mContext, RingtoneManager.TYPE_ALARM);