uiimageview

I'm running this code on a 2448 X 2448 pixel Image. fullScaleView is also 2448 X 2448 ( fullScreenView Rect:{{0, 0}, {2448, 2448}} ). The App memory jumps from 49.7MB to 240MB down to 172MB after the method is complete. It stays at 172MB. It doesn't seem like the app should still be running at such high a memory footprint after this one renderInContext . Where and how should I force a release? (iOS 7 XCode 5 ARC). UIGraphicsBeginImageContextWithOptions(fullScaleView.bounds.size, fullScaleView.opaque, 1.0); [fullScaleView.layer renderInContext: UIGraphicsGetCurrentContext()]; UIImage *viewImage

I am trying to skew a rectangle so the two vertical sides are slanted but parallel and the top and bottom are horizontal. I am trying to use CGAffineTransform and have found this code but I am not figuring out what to put in the various parts. imageView.layer.somethingMagic.imageRightTop = (CGPoint){ 230, 30 }; imageView.layer.somethingMagic.imageRightBottom = (CGPoint){ 300, 150 }; #define CGAffineTransformDistort(t, x, y) (CGAffineTransformConcat(t, CGAffineTransformMake(1, y, x, 1, 0, 0))) #define CGAffineTransformMakeDistort(x, y) (CGAffineTransformDistort(CGAffineTransformIdentity, x, y))

I have a UIImageView which loads in images from the documents directory on the ios file system . The problem is that when I call [imageView sizeToFit]; It does not work. I think it is because the image hasn't loaded fully at that point and so the sizeToFit part is called before it has the image width & height. Could someone point me in the direction of a fix please. Here is my code: imageView.contentMode = UIViewContentModeScaleAspectFit; imageView.image = [UIImage imageWithContentsOfFile:[FileOperations getLibraryPath:[NSString stringWithFormat:@"%d.png", listData.imageId]]]; [imageView

I'm trying to make a UIImageView with a .png load up in the location of a button when it is clicked. brickAnim = UIImageView.alloc; ///////freezes during runtime [brickAnim initWithFrame:currentBrick.frame]; [brickAnim setImage:[NSString stringWithFormat:@"brick-1.png"]]; [self.view addSubview:brickAnim]; current brick is the name of the button that's being clicked. I've narrowed it down and figured out that the first line causes the app to freeze and exit. I can't figure out what I'm doing wrong. try brickAnim = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"brick-1.png"]];

Behold: //UIImageView* stretchTest = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"image.png"]]; //[self addSubview:stretchTest]; UIButton *stretchTest = [UIButton buttonWithType:UIButtonTypeCustom]; [stretchTest setFrame:CGRectMake(0, 0, 400, 100)]; [stretchTest setBackgroundImage:[UIImage imageNamed:@"image.png"] forState:UIControlStateNormal]; [self addSubview:stretchTest]; stretchTest.contentStretch = CGRectMake(0.5, 0.5, 0, 0); stretchTest.contentMode = UIViewContentModeScaleToFill; CGRect frame = stretchTest.frame; frame.size.height = 300; stretchTest.frame = frame; Using the

I have a UIImage loaded into a UIImageView . The UIImage is larger than the UIImageView and it has been scaled down to fit. Obviously the scaled down UIImage shows jagged edges. What is the best way to anti-alias this image with regards to performance? I've seen this method using drawInRect but I've also read that drawInRect does not give the best performance . I've read several different articles and I've tried a few methods myself. But after reading a few more posts on the performance differences between using UIViews and Core Graphics, I was wondering which method for anti aliasing an image

I am just getting stated with iPhone development and can't seem to find the answer I am looking for what I want to do. It seems like I should be able to programmatically create a UIImageView and then set up an event handler for it's touch functions. in c# i would have something that looks like Button b = new Button(); b.Click+= my handler code right now I have this CGRect myImageRect = CGRectMake(0.0f, 0.0f, 141.0f, 151.0f); UIImageView *myImage = [[UIImageView alloc] initWithFrame:myImageRect]; myImage.userInteractionEnabled = YES; [myImage setImage:[UIImage imageNamed:@"myImage.png"]];