网络图片问题

//由于网络请求的图片如果直接setImage会出现大小不正常的情况，所以用下面方法解决这一问题

NSURL*url = [NSURLURLWithString:[_bankInfoobjectForKey:@"bank_pic"]];

UIImage*icon = [UIImageimageWithData:[NSDatadataWithContentsOfURL:url]];

CGSizeitemSize =CGSizeMake(40,40);

UIGraphicsBeginImageContextWithOptions(itemSize,NO,0.0);

CGRectimageRect =CGRectMake(0.0,0.0, itemSize.width, itemSize.height);

[icondrawInRect:imageRect];

cell.imageView.image=UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

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