今天做到Android视频缩略图,上网找到了一种方法,可能不是最好的,但是先记下来,和大家分享下。
首先取得Cursor
- // MediaStore.Video.Thumbnails.DATA:视频缩略图的文件路径
- String[] thumbColumns = { MediaStore.Video.Thumbnails.DATA,
- MediaStore.Video.Thumbnails.VIDEO_ID };
-
- // MediaStore.Video.Media.DATA:视频文件路径;
- // MediaStore.Video.Media.DISPLAY_NAME : 视频文件名,如 testVideo.mp4
- // MediaStore.Video.Media.TITLE: 视频标题 : testVideo
- String[] mediaColumns = { MediaStore.Video.Media._ID,
- MediaStore.Video.Media.DATA, MediaStore.Video.Media.TITLE,
- MediaStore.Video.Media.MIME_TYPE,
- MediaStore.Video.Media.DISPLAY_NAME };
-
- cursor = managedQuery(MediaStore.Video.Media.EXTERNAL_CONTENT_URI,
- mediaColumns, null, null, null);
- BitmapFactory.Options options = new BitmapFactory.Options();
- options.inDither = false;
- options.inPreferredConfig = Bitmap.Config.ARGB_8888;
- ContentResolver contentResolver = getContentResolver();
-
- if (cursor.moveToFirst()) {
- do {
- LocalVideoInfo info = new LocalVideoInfo();
- int id = cursor.getInt(cursor.getColumnIndex(MediaStore.Video.Media._ID));
- Cursor thumbCursor = managedQuery(MediaStore.Video.Thumbnails.EXTERNAL_CONTENT_URI,
- thumbColumns, MediaStore.Video.Thumbnails.VIDEO_ID+ "=" + id, null, null);
- if (thumbCursor.moveToFirst()) {
- info.setThumbPath(thumbCursor.getString(thumbCursor.getColumnIndex(MediaStore.Video.Thumbnails.DATA)));
- }
- info.setPath(cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DATA)));
- info.setTitle(cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.TITLE)));
- info.setDisplayName(cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DISPLAY_NAME)));
- info.setBitmap(MediaStore.Video.Thumbnails.getThumbnail(contentResolver, id, Images.Thumbnails.MICRO_KIND, options));
- info.setMimeType(cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.MIME_TYPE)));
- sysVideoList.add(info);
- } while (cursor.moveToNext());
- }
缩略图关键是下面这句,返回的是一个Bitmap:
- MediaStore.Video.Thumbnails.getThumbnail(contentResolver, id, Images.Thumbnails.MICRO_KIND, options)
之后在列表中显示就可以了。
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