获取指定Cell

/**
 *	@brief	回调函数确认进度 aPercent 0=上传进度 1=图片Name 2=indexPath
 */
- (void) progressAtPercent: (NSMutableArray *) aPercent
{
    NSLog(@"上传进度22progress==%@==name==%@=====%@",[aPercent objectAtIndex:0],[aPercent objectAtIndex:1],[aPercent objectAtIndex:2]);
    NSUInteger row = [[aPercent objectAtIndex:2] integerValue];
    NSIndexPath *path=[NSIndexPath indexPathForRow:row inSection:0];
    JSBubbleMessageCell *cell = (JSBubbleMessageCell *)[_tableView cellForRowAtIndexPath:path];
    NSString *progressStr = [NSString stringWithFormat:@"%0.f%%",[[aPercent objectAtIndex:0] floatValue]*100] ;
    [cell setProgress:progressStr];
}

http://bbs.csdn.net/topics/360157080

NSIndexPath *ip = [NSIndexPath indexPathForRow:itemCurrentlyPlaying inSection:0];

http://stackoverflow.com/questions/2910503/uitableview-does-not-scroll-to-cell