There is no built-in scale type that allows the ImageView to automatically upscale the image and keep its aspect ratio intact. The only scale type that does upscaling is fitXY, which won’t respect the aspect ratio, as you found out yourself too. That being said, this topic has already been visited more than once. Have … Read more
This is solution which I have used in my app: var image: UIImage = UIImage(named: “imageName”) imageView.layer.borderWidth = 1.0 imageView.layer.masksToBounds = false imageView.layer.borderColor = UIColor.whiteColor().CGColor imageView.layer.cornerRadius = image.frame.size.width/2 imageView.clipsToBounds = true Swift 4.0 let image = UIImage(named: “imageName”) imageView.layer.borderWidth = 1.0 imageView.layer.masksToBounds = false imageView.layer.borderColor = UIColor.white.cgColor imageView.layer.cornerRadius = image.frame.size.width / 2 imageView.clipsToBounds = true
If you want a ripple effect on a view you can use it. CATransition *animation = [CATransition animation]; [animation setDelegate:self]; [animation setDuration:2.0f]; [animation setTimingFunction:UIViewAnimationCurveEaseInOut]; [animation setType:@”rippleEffect” ]; [myView.layer addAnimation:animation forKey:NULL];
Yes, UIImageView setImage does leak! Actually, leaks CGImage, not UIImage (as instrument “allocation” shows) I use BrutalUIImage instead of UIImage @interface BrutalUIImageView : UIView { UIImage *image; } @property(nonatomic, retain) UIImage *image; @end @implementation BrutalUIImageView @synthesize image; – (void)setImage:(UIImage *)anImage { [image autorelease]; image = [anImage retain]; [self setNeedsDisplay]; } – (void)drawRect:(CGRect)rect { [super drawRect:rect]; … Read more
You have to iterate through each pixel in the image and take its rgb values Check its rgb values matches your fromColor rgb values, if yes change the pixel value to your toColor rgb values.If not, just leave that pixel and go to next one.. Wrote a function from memory..errors possible..correct yourself -(UIImage*)changeColor:(UIImage*)myImage fromColor:(UIColor*)fromColor toColor:(UIColor*)toColor{ … Read more
This is not possible, the story board used at launch time is in the main bundle of the application which is readonly and can not be changed. Also you (edit) can’t run any code on startup, since your app is not running.
Auto Layout solution Since establishing that you’re using Auto Layout in your project, I have made a demo app to show you how you could change the image of the image view and adjust the height. Auto Layout will do this for you automatically, but the catch is that the photo you’ll be using is … Read more
Set your view controller up as a <UIScrollViewDelegate> Draw your UIScrollView the size you want for the rectangle at the center of the view. Set the max zoom in the inspector to something bigger than 1. Like 4 or 10. Right click on the scroll view and connect the delegate to your view controller. Draw … Read more
If it’s UIViewContentModeScaleAspectFit, it’s something like this: UIImageView *iv; // your image view CGSize imageSize = iv.image.size; CGFloat imageScale = fminf(CGRectGetWidth(iv.bounds)/imageSize.width, CGRectGetHeight(iv.bounds)/imageSize.height); CGSize scaledImageSize = CGSizeMake(imageSize.width*imageScale, imageSize.height*imageScale); CGRect imageFrame = CGRectMake(roundf(0.5f*(CGRectGetWidth(iv.bounds)-scaledImageSize.width)), roundf(0.5f*(CGRectGetHeight(iv.bounds)-scaledImageSize.height)), roundf(scaledImageSize.width), roundf(scaledImageSize.height));
try this code yourImageView.layer.cornerRadius = yourImageView.frame.size.height /2; yourImageView.layer.masksToBounds = YES; yourImageView.layer.borderWidth = 0; this show image like ios 7 circle image thanks