Android(安卓)视频截图

static public Bitmap getVideoThumbnail(ContentResolver cr, String path) {
Bitmap bitmap = null;
BitmapFactory.Options options = new BitmapFactory.Options();
options.inDither = false;
options.inPreferredConfig = Bitmap.Config.RGB_565;
//select condition.
String whereClause = MediaStore.Video.Media.DATA + " = '"
+ path + "'";
Log.v(TAG, "where = " + whereClause);
//colection of results.
Cursor cursor = cr.query(MediaStore.Video.Media.EXTERNAL_CONTENT_URI,
new String[] { MediaStore.Video.Media._ID }, whereClause,
null, null);
Log.v(TAG, "cursor = " + cursor);
if (cursor == null || cursor.getCount() == 0) {
return ThumbnailUtils.createVideoThumbnail(path, MediaStore.Video.Thumbnails.MINI_KIND);
}
cursor.moveToFirst();
//image id in image table.
String videoId = cursor.getString(cursor
.getColumnIndex(MediaStore.Video.Media._ID));
Log.v(TAG, "videoId = " + videoId);
if (videoId == null) {
return ThumbnailUtils.createVideoThumbnail(path, MediaStore.Video.Thumbnails.MINI_KIND);
}
cursor.close();
long videoIdLong = Long.parseLong(videoId);
//via imageid get the bimap type thumbnail in thumbnail table.
bitmap = MediaStore.Video.Thumbnails.getThumbnail(cr, videoIdLong,
Images.Thumbnails.MICRO_KIND, options);
Log.v(TAG, "bitmap = " + bitmap);
return bitmap;
}

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