Question

For some reason i can’t get activity indicator show up instantly. Maybe anyone could see why?

UIActivityIndicatorView *spinner = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
spinner.center = self.view.center; 
_active = spinner;
[self.view addSubview:spinner];
[spinner startAnimating];
@try {

    [self connectToServerUsingStream:ip portNo:port];
    NSString *text = @"test";
    const uint8_t *str =
    (uint8_t *) [text cStringUsingEncoding:NSASCIIStringEncoding];
    [self writeToServer:str];

}
@catch (NSException * e) {
    NSLog(@"Exception: %@", e);
}

The spinner only shows up then connection to server was made, before that it doesn’t show. Any ideas?

Answer 1

Use below updated code. I think it will work.

UIActivityIndicatorView *spinner = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
spinner.center = self.view.center; 
 _active = spinner; 
[self.view addSubview:spinner]; 
[spinner startAnimating]; 
[self performSelector:@selector(performTask) withObject:nil afterDelay:0.0];

- (void)performTask {
     @try {
         [self connectToServerUsingStream:ip portNo:port];
         NSString *text = @"test";
         const uint8_t *str =
         (uint8_t *) [text cStringUsingEncoding:NSASCIIStringEncoding];
         [self writeToServer:str];

     }
     @catch (NSException * e) {
         NSLog(@"Exception: %@", e);
     } 
}