如何减少UIImage的大小......?

时间:2011-02-16 05:05:50

标签: iphone ipad memory-management

我的图像尺寸为1200x1200。(从服务器获取)。我可以将它减少到800x800(不使用“预览”)。由于图像尺寸较大,我的应用程序崩溃..请帮助我解决这个问题......提前谢谢。

1 个答案:

答案 0 :(得分:11)

            UIImage *image = [actualImage you want to resize];
            UIImage *tempImage = nil;
            CGSize targetSize = CGSizeMake(196,110);
            UIGraphicsBeginImageContext(targetSize);

            CGRect thumbnailRect = CGRectMake(0, 0, 0, 0);
            thumbnailRect.origin = CGPointMake(0.0,0.0);
            thumbnailRect.size.width  = targetSize.width;
            thumbnailRect.size.height = targetSize.height;

            [image drawInRect:thumbnailRect];

            tempImage = UIGraphicsGetImageFromCurrentImageContext();

            UIGraphicsEndImageContext();

你可以使用这个tempImage,它将被调整大小Image

希望,这有帮助!