android - 如何在 ListView 中显示SD卡中的mp3文件？

Question

我创建一个应用程序来记录音频并将其存储在SD卡中。我做了这部分
成功。这是用于将音频文件插入SD卡的代码。

protected void addRecordingToMediaLibrary() {
    ContentValues values = new ContentValues(4);
    long current = System.currentTimeMillis();
    values.put(MediaStore.Audio.Media.TITLE, "audio" + audiofile.getName());
    values.put(MediaStore.Audio.Media.DATE_ADDED, (int) (current / 1000));
    values.put(MediaStore.Audio.Media.MIME_TYPE, "audio/3gpp");
    values.put(MediaStore.Audio.Media.DATA, audiofile.getAbsolutePath());
    ContentResolver contentResolver = getContentResolver();

    Uri base = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
    Uri newUri = contentResolver.insert(base, values);

    sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, newUri));
    Toast.makeText(this, "Added File " + newUri, Toast.LENGTH_LONG).show();
}

但是现在我想在listView中显示此音频文件，但是我不知道该怎么做。
请给我任何引用或提示。

Answer 1

首先解压缩所有的mp3文件。

使用我开发的这种方法...获取SD卡的mp3文件

为了更详细，我还问了一个问题 Observing changes in android content observer for Audio.Media.EXTERNAL_CONTENT_URI

此代码对 mnt / sdcrad 和 extSdCard 均适用

在这段代码中，我已经检索到

文件名

文件路径

时间

持续时间

每个mp3文件。您可以检索的字段太多，请引用此 http://developer.android.com/reference/android/provider/MediaStore.Audio.AudioColumns.html。

     private void getAllAudio() {
     Cursor mCursor = null;

     try {
         mCursor = context.getContentResolver().query(
             Audio.Media.EXTERNAL_CONTENT_URI, null, null, null, "_id");

         System.out.println("Cursor count is " + mCursor.getCount());

         if (mCursor.getCount() != 0) {

             do {


                 long date = mCursor.getLong(mCursor
                     .getColumnIndexOrThrow(Audio.Media.DATE_ADDED));

                 String Duration = mCursor.getString(mCursor
                     .getColumnIndexOrThrow(Audio.Media.DURATION));
                 String DISPLAY_NAME = mCursor.getString(mCursor
                     .getColumnIndexOrThrow(Audio.Media.DISPLAY_NAME));
                 String DATA = mCursor.getString(mCursor
                     .getColumnIndexOrThrow(Audio.Media.DATA));
                 double TIME_STAMP = mCursor.getInt(mCursor
                     .getColumnIndexOrThrow(Audio.Media.DATE_ADDED));


                 System.out.println("Name:" + DISPLAY_NAME);
                 System.out.println("data " + DATA);
                 System.out.println("time " + TIME_STAMP);
                 System.out.println("time " + Duration);

                 //Here you can create data base for recoring entries or may can create ArrayList of Class bean object having this fields for showing in ListView.


             } while (mCursor.moveToNext());

         }
     } catch (Exception e) {
         e.printStackTrace();
     } finally {
         if (mCursor != null) {
             mCursor.close();
             mCursor = null;
         }
     }

 }
 }