render - iOS: rendering a subview at the proper resolution -
i have view has few subviews. using transforms scale view 400%, works perfectly, not sure how scale "drawing" of sub-views. when render scaled view subviews come out fuzzy because drawing still @ 100%.
i have tried [view setneedsdisplay] on view , subviews, drawing still low resolution. 
any ideas on how fix render?
try:
cgfloat myscale = 4.0; [view setcontentscalefactor:myscale*[[uiscreen mainscreen] scale]]]; additionally, if embedding view within uiscrollview allow user zoom in/out put implementation in uiscrollviewdelegate:
- (void)scrollviewdidendzooming:(uiscrollview *)scrollview withview:(uiview *)view atscale:(float)scale {     scale *= [[[scrollview window] screen] scale];     [view setcontentscalefactor:scale]; } 
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