改变UITableViewCell的imageView的大小（cell.imageView）

/***

    改变cell.imageView 的大小，解决图标出现毛边的问题;

    UIImage *icon = [UIImageimageNamed:[NSStringstringWithFormat:@"%@",[imageArrayobjectAtIndex:indexPath.row]]];

//设置imageView的大小宽、高
    CGSize itemSize = CGSizeMake(22,22);

开始
    UIGraphicsBeginImageContextWithOptions(itemSize,NO,0.0);
    CGRect imageRect = CGRectMake(0.0,0.0, itemSize.width, itemSize.height);
    [icon drawInRect:imageRect];
    cell.imageView.image= UIGraphicsGetImageFromCurrentImageContext();

结束    

   UIGraphicsEndImageContext();

***/