Monday, July 18, 2016

Stretching a image in iOS using colorWithPatternImage

We can do some image resizing to achieve this. Use this helper method to resize image and then use it in colorWithPatternImage method call.

This is the resizing helper method.

-(UIImage *)imageResize :(UIImage*)img andResizeTo:(CGSize)newSize
    CGFloat scale = [[UIScreen mainScreen]scale];

    UIGraphicsBeginImageContextWithOptions(newSize, NO, scale);
    [img drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
    UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
    return newImage;

And this is how to call it inside your colorWithPatternImage method.

[separatorLineView setFrame:CGRectMake(10, 0, 180, 3)];
separatorLineView.backgroundColor = [UIColor colorWithPatternImage:[self imageResize :[UIImage imageNamed:@"divider.png"] andResizeTo:separatorLineView.frame.size]];

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