I have a situation where i need to alert users that the next view controller accessed is "Data Loading".
I added this to the FirstViewController button action:
- (IBAction)showCurl:(id)sender {
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Please Wait" message:@"Acquiring data from server" delegate:self cancelButtonTitle:@"OK!" otherButtonTitles:nil];
[alert show];
SecondViewController *sampleView = [[SecondViewController alloc] init];
[sampleView setModalTransitionStyle:UIModalTransitionStylePartialCurl];
[self presentModalViewController:sampleView animated:YES];
}
it doesn't work. It loads to SecondViewController and only pops up after the SecondViewController is loaded.
So i tried on the SecondViewController itself. The SecondViewController extracts data from a remote server which is the reason its going to take a while to download depending on Internet connectivity. So i decided to add the UIAlertView in the function:
- (NSMutableArray*)qBlock{
UIAlertView *alert_initial = [[UIAlertView alloc]initWithTitle:@"Loading" message:nil delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert_initial show];
NSURL *url = [NSURL URLWithString:@"http://www.somelink.php"];
NSError *error;
NSStringEncoding encoding;
NSString *response = [[NSString alloc] initWithContentsOfURL:url
usedEncoding:&encoding
error:&error];
if (response) {
const char *convert = [response UTF8String];
NSString *responseString = [NSString stringWithUTF8String:convert];
NSMutableArray *sample = [responseString JSONValue];
return sample;
}
else {
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"ALERT" message:@"Internet Connection cannot be established." delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert show];
}
return NULL;
}
This doesn't work too. And to top it off, i tried to off internet connection to see if the second alert pops up to alert user that there's no internet connection. The second alert doesn't work too.