iphone - Changing the rate at which a method is called -

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i'm still new objective c, , feel might basic concept don't know.

i'm working opengl , have method glkview of viewcontroller, called when "the view needs updated". method, call method, don't want second method called @ rate specify.

how go accomplishing this? understand viewcontroller.preferredframespersecond can set, want 1 specific method work on different timer..

is right way of going this?

sounds might want use nstimer


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