objective c - Updating UILabel in a loop?

Question

I want the screen to display the number on each iteration for the following example code?? This code shows the last iteration number regardless of using a pause...

for(int i = 0; i<10; i++){
    [lbl setText:[NSString stringWithFormat:@"%d", i]];
}

I have updates coming across TCP Sockets in a while loop... only the last update gets written to the screen... and it is slow so I should see all the updates.

Answer 1

You should set a timer to handle the update of your label. Right now the whole loop is happening in a fraction of a second.

NSTimer * aTimer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(updateTimerLabel) userInfo:nil repeats:YES];

-(void)updateTimerLabel {
    static int i = 0;

    [lbl setText:[NSString stringWithFormat:@"%d", i++];
}

This way your label should get updated once every second.