iPhone UIActivityIndicatorView not starting or stopping -

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When I start a call, on a UIActivityIndicatorView, it does not start. Why is it like this?

[This is a blog-style self answer. The solution given below works for me, but, maybe others are better?]

If you type in code like this: 

  - (zero) dustfam {[activity indicator start-up]; ... lots of computations ... [activity indicator stop animation]; }

You do not really have UI timings to start and stop the activity pointer because all of your calculations are on the main thread. Call to start a solution: To translate into a different thread: 

  - (zero) ThreadStartEnimation: (ID) data {[Activity indicator startAnumitting]; } - (zero) dustf {{NSThread detachNewThreadSelector: @selector (thread start animating :) to toggle: self with object: zero]; ... lots of computations ... [activity indicator stop animation]; }

Or, you can put your calculation on a separate thread, and wait for it to stop before calling StopAnimation.


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