UIView Zoom problem

Question

I have an uiview ,In that view i had drawn one chart...I want to zoom in...

How can i do this ?

Is it possible ?

Can anyone help me?

Thanks in advance.....

Answer 1

Look at UIScrollView for one way of zooming in.

Another way to do it would be to draw the chart in a larger format in another offscreen view or bitmap, and then use a 0.5 or so transform to show it in your view, pre-zoomed. Then when you want to zoom, you dial the transform back to a 1:1 ratio.

If you don't shrink the view down initially, then when you zoom it you will see artifacts.