Question

Has anyone gotten multi-touch zoom to work on a textView?

I have searched SO and found no simple way to zoom in on a UITextView or UIScrollView. I was led to this link which says I need to write custom views to overwrite the existing ones in order to be able to zoom in to a textView. I can not believe this and would like someone to please let me know if there is a simple way to zoom in and zoom out using multi-touch on a UITextView or a UIScrollView.

I tried setting the options in the IB to enable multi-touch as well as the max zoom. But this does not work.

Please advise. Thank you.

Answer 1

1 Create a new project with single view (using storyboard & arc)

2 Open Storyboard and add a UIScrollView to your main view controller

3 Set the UIScrollView’s delegate to the view controller and create an IBOutlet for the UIScrollView called scrollview

4 Add a UITextView to the scrollview and set an IBOutlet called textview

5 At the end of the ViewDidLoad add the following code:

self.scrollview.minimumZoomScale = 0.5;
self.scrollview.maximumZoomScale = 5.0;
self.textview.text = @"Hellow World!";

6 Add the following method

- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView {
    return self.textview;
}

7 Run the project and zoom away!

If you want the text to look not render blurry when use the answer at this Blurry UITextField Question