Strange behavior with drawing an UImage into graphic context

Question

I have the following code to merge two pictures side by side horizontally :

        CGFloat firstWidth = ImageLeft.size.width;
        CGFloat firstHeight = ImageLeft.size.height;


        CGFloat secondWidth = ImageRight.size.width;
        CGFloat secondHeight = ImageRight.size.height;

        CGSize sizetoNewImage = CGSizeMake(firstWidth+secondWidth , firstHeight); // Here merging two images horizontally ,

        UIGraphicsBeginImageContext(sizetoNewImage);

        [ImageLeft drawInRect : CGRectMake(0,0,firstWidth,firstHeight)];
        [ImageRight drawInRect:CGRectMake(firstWidth,0,secondWidth,secondHeight)];// Here merging two images horizontally ,

        backgroundImage = UIGraphicsGetImageFromCurrentImageContext();
        UIGraphicsEndImageContext();

The problem is that when i show backgroundImage it has all text blurred. Although, if i display separate images, that were used to join into one image - they show all text just fine. What I am missing there ???

Thanks in advance

score 2 · Accepted Answer · edited May 23 '17 at 12:04

2

From another answer, when using retina images, use the following to create image context.

UIGraphicsBeginImageContextWithOptions(size, NO, 0.0f); // 0.0 means [UIScreen mainScreen].scale

edited May 23 '17 at 12:04

Community

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answered Apr 25 '13 at 18:22

maroux

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Strange behavior with drawing an UImage into graphic context

1 Answers1