Objective C - loop to change label text

Question

i have a loop that looks like this

for(int x=0; x < 10; x++){
    [testLabel setText:[self randomString]];
    sleep(1);
}

The randomStr

Answer 1

The UI is only updated at the end of a run loop, of which your loop is running inside of a single iteration of. You should be using an NSTimer instead.