如何将URI（从媒体存储区）转换为图像（位图）？

Question

hey i checked out a few questions and almost all of the questions were related to internet and mostly included methods like openConnection()and getInputStream() but mine is related to Media store so i am asking this question again here... I am able to get the Album URI by using media store and cursor but i do not know how to proceed further thanx in advance.

i tried

Bitmap bitmap=null;
            MediaMetadataRetriever mmr = new MediaMetadataRetriever();


            byte[] rawArt = null;

            BitmapFactory.Options bfo=new BitmapFactory.Options();
            mmr.setDataSource(string);
             rawArt = mmr.getEmbeddedPicture();


             bitmap=BitmapFactory.decodeByteArray(rawArt, 0, rawArt.length, bfo);

but didn't help

Edit mediastore part.......

columns  = new String[]{ android.provider.MediaStore.Audio.Albums._ID,
            android.provider.MediaStore.Audio.Albums.ALBUM,
             MediaStore.Audio.Albums.ALBUM_ART };
            cursor = 

    getActivity().managedQuery(MediaStore.Audio.Albums.EXTERNAL_CONTENT_URI,
                columns, null, null, null);


                if(cursor != null){
                    while(cursor.moveToNext()) {
                    SongDetails songs = new SongDetails();
                    songs.song= cursor.getString(1);
                    songs.Path=cursor.getString(2);
                    //songs.Album=cursor.getString(0);
                    //songs.Artist=cursor.getString(1);
                    songdetails.add(songs);
                    }}
                list=(GridView)container.findViewById(R.id.grid_view);
                adapter=new LazyAdapter( songdetails);

one such URI:"/storage/sdcard0/Android/data/com.android.providers./media/albumthumbs/138216121805

Answer 1

位图位图= MediaStore.Images.Media.getBitmap（this.getContentResolver（），imageUri）;

Answer 2

The easiest solution is to use a ContentResolver :

InputStream is = context.getContentResolver.openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(is);

Or, a shortcut:

Bitmap bitmap = MediaStore.Images.Media.getBitmap(context.getContentResolver(), uri)

The context variable can be an Activity , Service , application context etc.