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DevTut

Resizing UIImage

Resize any image by size & quality

Section titled “Resize any image by size & quality”
- (UIImage *)drawImageBySize:(CGSize)size quality:(CGInterpolationQuality)quality
{
    UIGraphicsBeginImageContextWithOptions(size, NO, 0.0);
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGContextSetInterpolationQuality(context, quality);
    [self drawInRect: CGRectMake (0, 0, size.width, size.height)];
    UIImage *resizedImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return resizedImage;
}

Parameters

Section titled “Parameters”

|CGInterpolationQuality|Levels of interpolation quality for rendering an image. |---|---|---|---|---|---|---|---|---|--- |Interpolation quality is a graphics state parameter|typedef enum CGInterpolationQuality CGInterpolationQuality;