获取多媒体文件信息

MediaMetadataRetriever metaRetriever = new MediaMetadataRetriever();metaRetriever.setDataSource(/* file descriptor or file path goes here */);String height = metaRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);String width = metaRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);

if (context != null) {  
            Cursor cursor = context.getContentResolver().query(  
                    MediaStore.Video.Media.EXTERNAL_CONTENT_URI, null, null,  
                    null, null);  
            if (cursor != null) {  
                list = new ArrayList<Video>();  
                while (cursor.moveToNext()) {  
                    int id = cursor.getInt(cursor  
                            .getColumnIndexOrThrow(MediaStore.Video.Media._ID));  
                    String title = cursor  
                            .getString(cursor  
                                    .getColumnIndexOrThrow(MediaStore.Video.Media.TITLE));  
                    String album = cursor  
                            .getString(cursor  
                                    .getColumnIndexOrThrow(MediaStore.Video.Media.ALBUM));  
                    String artist = cursor  
                            .getString(cursor  
                                    .getColumnIndexOrThrow(MediaStore.Video.Media.ARTIST));  
                    String displayName = cursor  
                            .getString(cursor  
                                    .getColumnIndexOrThrow(MediaStore.Video.Media.DISPLAY_NAME));  
                    String mimeType = cursor  
                            .getString(cursor  
                                    .getColumnIndexOrThrow(MediaStore.Video.Media.MIME_TYPE));  
                    String path = cursor  
                            .getString(cursor  
                                    .getColumnIndexOrThrow(MediaStore.Video.Media.DATA));  
                    long duration = cursor  
                            .getInt(cursor  
                                    .getColumnIndexOrThrow(MediaStore.Video.Media.DURATION));  
                    long size = cursor  
                            .getLong(cursor  
                                    .getColumnIndexOrThrow(MediaStore.Video.Media.SIZE));  
                    Video video = new Video(id, title, album, artist, displayName, mimeType, path, size, duration);  
                    list.add(video);  
                }  
                cursor.close();  
            }  
        }  
http://blog.csdn.net/jwzhangjie/article/details/9027607

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