uitapgesturerecognizer image zoom inside the frame

[ahsan123]

Hello Everyone

I am new iphone development

I have uitapgesturerecognizer in uiscrollview which I use for image zooming.
The code I have written inside the handleTap function zooms the whole image but my requirement is that image should be zoomed inside the image view or frame or (subview of the uiscrollview).
I want to know what should I do in handleTap funtion to zoom the picture inside the image view and the size of the image view or image frame should not increase but just the image inside increases? May be this thing called image scaling

Thankyou