把图片切割的方法

- (UIImage *)clipImage: (UIImage *)image inRect: (CGRect) rect
{
    //返回image中rect范围内的图片
    CGImageRef imageRef = CGImageCreateWithImageInRect(image.CGImage, rect);
    UIImage *subImage = [UIImage imageWithCGImage:imageRef];
    return subImage;
}

 

iv.image = [self clipImage:[UIImage imageNamed:@"king2"] inRect:CGRectMake(100*(i%3), 100*(i/3), 100, 100)];

 

 

    DataStore *ds=[DataStore detectDataStore];
    
    cell.textLabel.text=[ds.detectItems[indexPath.section][indexPath.row]myname];
    cell.imageView.image=[ds.detectItems[indexPath.section][indexPath.row]img];
    //    cell.detailTextLabel.text=[ds.allItems[indexPath.section][indexPath.row]mydetailText];
    
    CGSize itemSize = CGSizeMake(30, 30);
    UIGraphicsBeginImageContext(itemSize);
    CGRect imageRect = CGRectMake(0.0, 0.0, itemSize.width, itemSize.height);
    [cell.imageView.image drawInRect:imageRect];
    cell.imageView.image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();