objective c - How can I rotate and move a UIView at the same time? -

i'm trying make uiview move , rotate @ same time.

here's code:

_viewtodrag.frame = cgrectmake(x, y, size, width); _viewtodrag.transform = cgaffinetransformmakerotation(-m_pi_2 * multiplier)); 

as multiplier increases (0.0 .. 1.0) view stretches beyond logic.

this post seems answer question: rotating , moving uiimageview (cocoatouch)

but, since i'm code-dyslexic , bit retarded can explain translates code:

change "center" property instead.

i have made comment reputation doesn't allow it.

always consult documentation. apple says, in big box exclamation mark graphic next it, in section on frame:

warning: if transform property not identity transform, value of property undefined , therefore should ignored.

underneath centre says:

the center specified within coordinate system of superview , measured in points. setting property changes values of frame properties accordingly.

so answer link incorrect. given one-sentence nature no reference sources, author tried once, on version of ios happened have installed, looked worked , jumped straight unsupported conclusion.

the other answer correct. need build translation transform. throwing in use of cgaffinetransformtranslate.

edit: so, set transform translation of (1000, 0) , rotation of -m_pi/2:

_viewtodrag.transform = cgaffinetransformrotate(     cgaffinetransformmaketranslation(1000.0, 0.0),     -m_pi_2);