uipinchgesturerecognizer

I've created a UIGestureRecognizer much like this one : - (void)handlePinchGesture:(UIPinchGestureRecognizer *)gestureRecognizer { if([gestureRecognizer state] == UIGestureRecognizerStateBegan) { // Reset the last scale, necessary if there are multiple objects with different scales lastScale = [gestureRecognizer scale]; } if ([gestureRecognizer state] == UIGestureRecognizerStateBegan || [gestureRecognizer state] == UIGestureRecognizerStateChanged) { CGFloat currentScale = [[[gestureRecognizer view].layer valueForKeyPath:@"transform.scale"] floatValue]; // Constants to adjust the max/min values

I want to zoom in and zoom out an image view and i dont want to use UIScrollView for that. so for this i used UIPinchGestureRecognizer and here is my code - [recognizer view].transform = CGAffineTransformScale([[recognizer view] transform], [recognizer scale], [recognizer scale]); recognizer.scale = 1; this is working fine for zoom in and zoom out. But problem is that i want to zoom in and zoom out in specific scale like in UIScrollView we can set the maxZoom and minZoom. i could not found any solution for that, every tutorial about UIPinchGestureRecognizer just describe the same code. nhahtdh

I needed a Pinch Recognizer that would scale in x, or y, or both directions depending on the direction of the pinch. I looked through many of the of the other questions here and they only had parts of the answer. Here's my complete solution that uses a custom UIPinchGestureRecognizer. I created a custom version of a UIPinchGestureRecognizer. It uses the slope of line between the two fingers to determine the direction of the scale. It does 3 types: Vertical; Horizontal; and Combined(diagonal). Please see my notes at the bottom. -(void) scaleTheView:(UIPinchGestureRecognizer *)pinchRecognizer {

I am really struggling to find tutorials online as well as already answered questions (I have tried them and they don't seem to work). I have a UIImageView that I have in the centre of my view. I am currently able to tap and drag this wherever I want on screen. I want to be able to pinch to scale and rotate this view. How do I achieve this? I have tried the code for rotation below but it doesn't seem to work? Any help will be a massive help and marked as answer. Thank you guys. import UIKit class DraggableImage: UIImageView { override func touchesBegan(_ touches: Set<UITouch>, with event:

I'm interested in creating UITextView that is expanding dynamically while typing the text, and scaling as the user pinches the screen(Similar behaviour can be found in TinyPost). When you just type (without pinching) the textView expands fine. When you just pinch (without typing) is works fine, but when you pinch and then type, the text inside gets cut. Here is my code: UIPinchGestureRecognizer *pinchGestRecognizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(scaleTextView:)]; pinchGestRecognizer.delegate = self; [bgFrameImageView addGestureRecognizer

I was hoping someone could help me out. I am trying to allow a user to pinch zoom on a UIImageView(with a max and min level allowed). But for some reason the it does not work right. The image zooms a little then just bounces back. Thank you. here is the zoom func func zoom(sender:UIPinchGestureRecognizer) { if sender.state == .Ended || sender.state == .Changed { let currentScale = self.view.frame.size.width / self.view.bounds.size.width var newScale = currentScale*sender.scale if newScale < 1 { newScale = 1 } if newScale > 9 { newScale = 9 } let transform = CGAffineTransformMakeScale(newScale,