如何从内部存储中获取不带SD卡插槽的手机中的歌曲

Question

我拥有一部没有sdcard插槽的手机，但它具有64GB的内部存储空间。 事实是，每当我使用自定义媒体播放器加载歌曲时，它只会仅加载.ogg文件（根本不加载MP3文件），而当uri = MediaStore.Audio.Media.INTERNAL_CONTENT_URI;时，就会发生这种情况uri = MediaStore.Audio.Media.INTERNAL_CONTENT_URI; 。 但是当uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI; 由于没有可搜索的sdcard插槽，它使应用程序崩溃。

这是我的代码，

    private void loadSongs() {
    Uri uri = MediaStore.Audio.Media.INTERNAL_CONTENT_URI;
    //Uri uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;

    String selection = MediaStore.Audio.Media.IS_MUSIC + "!=0";
    Cursor cursor = getContentResolver().query(uri, null, selection, null, null);
    if (cursor != null) {
        if (cursor.moveToFirst()) {
            do {
                String name = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.DISPLAY_NAME));
                String artist = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.ARTIST));
                String url = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.DATA));

                Log.i("DATA111", url);

                mediaMetadataRetrieve = new MediaMetadataRetriever();
                mediaMetadataRetrieve.setDataSource(url);

                art = mediaMetadataRetrieve.getEmbeddedPicture();

                if (art != null) {
                    songImage = BitmapFactory.decodeByteArray(art, 0, art.length);
                }

                SongInfo s = new SongInfo(name, artist, url, songImage);
                _songs.add(s);

            } while (cursor.moveToNext());
        }

        cursor.close();
        songAdapter = new SongAdapter(MainActivity.this, _songs);

    }
}

谁能找到我这个问题的解决方案？

Logcats结果：

I/DATA111: /storage/emulated/0/Download/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps][DM]/01 - ZNMD - Dil Dhadakne Do [www.DJMaza.Com].mp3
 I/DATA111: /storage/emulated/0/Download/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps][DM]/02 - ZNMD - Ik Junoon (Paint It Red) [www.DJMaza.Com].mp3
 /storage/emulated/0/DraStic/shaders/fxaa/fxaa.dsda:103)

运行结果：

                   Caused by: java.lang.RuntimeException: setDataSource failed: status = 0x80000000
                  at android.media.MediaMetadataRetriever.setDataSource(Native Method)
                  at android.media.MediaMetadataRetriever.setDataSource(MediaMetadataRetriever.java:69)
                  at com.example.captain.mp2x.MainActivity.loadSongs(MainActivity.java:184)
                  at com.example.captain.mp2x.MainActivity.checkUserPermission(MainActivity.java:146)
                  at com.example.captain.mp2x.MainActivity.onCreate(MainActivity.java:103)

这是当Uri uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;时记录的内容Uri uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI; ：

I/DATA111: /storage/emulated/0/Download/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/01 - ZNMD - Dil Dhadakne Do [www.DJMaza.Com].mp3 I/DATA111: /storage/emulated/0/Download/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/02 - ZNMD - Ik Junoon (Paint It Red) [www.DJMaza.Com].mp3 I/DATA111: /storage/emulated/0/Download/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/03 - ZNMD - Khaabon Ke Parinday [www.DJMaza.Com].mp3 I/DATA111: /storage/emulated/0/Download/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/04 - ZNMD - Senorita [www.DJMaza.Com].mp3 I/DATA111: /storage/emulated/0/Download/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/05 - ZNMD - Der Lagi Lekin [www.DJMaza.Com].mp3 I/DATA111: /storage/emulated/0/Download/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/06 - ZNMD - Sooraj Ki Baahon Mein [www.DJMaza.Com].mp3 I/DATA111: /storage/emulated/0/Download/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/07 - ZNMD - Toh Zinda Ho Tum [www.DJMaza.Com].mp3 I/DATA111: /storage/emulated/0/Download/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/08 - ZNMD - Ik Junoon (Remix) [www.DJMaza.Com].mp3 I/DATA111: /storage/emulated/0/Download/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/Zindagi Na Milegi Dobara [2011-MP3-VBR-320Kbps] - [DM]/09 - ZNMD - Senorita (Remix) [www.DJMaza.Com].mp3 I/DATA111: /storage/emulated/0/Download/Saints Row The Third Theme Ringtone.m4a E/MediaMetadataRetrieverJNI: getEmbeddedPicture: Call to getEmbeddedPicture failed. I/DATA111: /storage/emulated/0/MIUI/ringtone/Saints Row The Third Theme Ringtone.m4a E/MediaMetadataRetrieverJNI: getEmbeddedPicture: Call to getEmbeddedPicture failed. I/DATA111: /storage/emulated/0/DraStic/shaders/fxaa/fxaa.dsd

当它是Uri uri时= MediaStore.Audio.Media.INTERNAL_CONTENT_URI; 它显示I/DATA111: /system/media/audio/ui/Effect_Tick.ogg E/MediaMetadataRetrieverJNI: getEmbeddedPicture: Call to getEmbeddedPicture failed. 以及许多其他.ogg文件。

Answer 1

检查您是否获得有效的网址。

检查文件是否存在，是否不跳过。