android获取本地音乐的专辑图片

来源：互联网发布：光盘安装ubuntu系统编辑：程序博客网时间：2024/04/30 11:52

获取本地的音文件请查看 http://blog.csdn.net/zdnuist/article/details/42393947

获取专辑图片主要是通过album_id进行查询，因此首先获取album_id

String album_id = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.ALBUM_ID));

Sdcard上的专辑图片存储位置为 /storage/emulated/0/Android/data/com.android.providers.media/albumthumbs/

接下来获取album_art

private String getAlbumArt(int album_id) {String mUriAlbums = "content://media/external/audio/albums";String[] projection = new String[] { "album_art" };Cursor cur = this.getContentResolver().query(Uri.parse(mUriAlbums + "/" + Integer.toString(album_id)),projection, null, null, null);String album_art = null;if (cur.getCount() > 0 && cur.getColumnCount() > 0) {cur.moveToNext();album_art = cur.getString(0);}cur.close();cur = null;return album_art;}

获取出来的值就是图片的存储地址，最后获取图片

Bitmap bm = null; bm = BitmapFactory.decodeFile(<pre name="code" class="java">album_art

); iv1.setImageBitmap(bm);

最后补充下扫描sdcard音乐文件的方法:

//4.4以前可以用MEDIA_MOUNTED  4.4以后把它变为系统权限了  不能用        if(android.os.Build.VERSION.SDK_INT < 19){        mContext.sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED,Uri.parse("file://" + Environment.getExternalStorageDirectory().getAbsolutePath()))); } else {MediaScannerConnection.scanFile(mContext,                    new String[] { Environment.getExternalStorageDirectory().getAbsolutePath()+File.separator }, null,                    new MediaScannerConnection.OnScanCompletedListener() {                public void onScanCompleted(String path, Uri uri) {                }           });}

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