Update a label with speed every x seconds

Question

I\'m developing my first iPhone application. I have to update a label with the device speed every x seconds. I have created my own CLController and I can get device

Answer 1

you are right you have to use NSTimer. You will be calling one method after x seconds and updating the label.

[NSTimer scheduledTimerWithTimeInterval:x  target:self selector:@selector(updateLabel) userInfo:nil repeats:YES];

-(void)updateLabel
{
    // update your label
}