iOS 5 Development - 26 - Pinch (ZOOOOming)

This is about pinch, or how to zoom!

CODE: (implement in your .m file)

- (IBAction)handlePinch:(UIPinchGestureRecognizer *)recognizer { recognizer.view.transform = CGAffineTransformScale(recognizer.view.transform, recognizer.scale, recognizer.scale); recognizer.scale = 1;




}


Check this link for max & min zoom : http://paulsolt.com/2011/03/limiting-uipinchgesturerecognizer-zoom-levels/

Category:

Education

Tags:

• ios5
• ios
• development
• xcode
• UIGestureRecognizer
• gestures
• recognizer
• pinch
• UIPinchGestureRecognizer
• learn xcode
• learn xcode 4.2
• xcode tutorial for beginners
• xcode tutorial
• learn ios pragramming
• learn ios 5
• learn ios
• how to make iphone apps
• create iphone apps
• xcode4.2
• apps
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• tutorial

[ProgrammingTutor0]

I've added a link to the description , check it out ! (max&min zoom)

[thenaxxramas666]

thanks for the quick reaction. im building an app just from tutorials and havent got a lot of coding (none) knowledge. it would help a lot if you could help me out here. if not, no problem, i will just try to work it out myself.

[ProgrammingTutor0]

@thenaxxramas666 i advice you to go over objective-C then start with iOS development.. aim for quality .. and u'll get some great results!

[thenaxxramas666]

Could you explain how to put a max. and min. on scaling? Thanks!

[ProgrammingTutor0]

@thenaxxramas666 hey, you can simply put a condition that tests for the image size.. if the image is less than a certain size then it can't zoom in anymore.. same applies to max zoom

[hjyssg]

Where can I download the code documentation file that you used at 3:22? It seems to be very helpful!!

[ProgrammingTutor0]

@hjyssg Actually, this is my own private documentation.. i'll make it available for anyone soon :) and i'll support you with a link for that !

[hjyssg]

Thank you very much! The file is awesome!!

[thenaxxramas666]

something like this?:

- (void)pinch:(UIPinchGestureRec­ognizer *)recognizer

{ if (recognizer.state == UIGestureRecognizerStateChange­d ||  recognizer.state == UIGestureRecognizerStateEnded) { if (imageView.scale < yourScaleLimit) { imageView.scale *= recognizer.scale; } recognizer.scale = 1.0; }

}

[ProgrammingTutor0]

@vtrunk man add me on skype : dani_arnaout i'll solve ur problems there!