ios - Resize view on tap -

i have uiview panel drawing signature , i've came bit of code expand , contract panel when tapped. seems work enough code seems clumsy , wondering if there's perhaps better way achieve this.

i added tap gesture recogniser view, hooked , have in .m:

bool clientsiglarge;  - (ibaction)handlesigtap:(id)sender {     cgrect frame = self.clientsigview.frame;      if (clientsiglarge)     {         frame.size.height -= 400;         frame.size.width -= 350;         frame.origin.x += 350;         frame.origin.y += 400;         self.clientsigview.frame = frame;         clientsiglarge = no;     }     else     {         frame.size.height += 400;         frame.size.width += 350;         frame.origin.x -= 350;         frame.origin.y -= 400;         self.clientsigview.frame = frame;         clientsiglarge = yes;     } } 

any tips appreciated.

to make smoother, use animation block , if scaling-proportion fixed (like 2x, 3x, etc.) use cgaffinetransformscale

[uiview animatewithduration: 1                       delay: 0                     options: (uiviewanimationoptioncurvelinear | uiviewanimationoptionallowuserinteraction)                  animations:^{myview.transform = cgaffinetransformscale(cgaffinetransformidentity, xscalevalue, yscalevale);}                  completion:^(bool finished) { } ]; 

so in if-else condition change x , y scale values , use same block.

here reference link animations

hope looking for