Make UIAlertView blocking

Question

I need make UIAlertView blocking. Because i have function and i need to return UIAlertView choice. But problem is that after UIAlertView

Answer 1

Use the UIAlertView with blocks from Joseph and add a semaphore to it. Declare a global semaphore

dispatch_semaphore_t generateNotificationsSemaphore;

And signal the semaphore in the block handler

[alert showWithHandler:^(UIAlertView *alertView, NSInteger buttonIndex) {
    if (buttonIndex == [alertView cancelButtonIndex]) {

    } else {

    }

    dispatch_semaphore_signal(generateNotificationsSemaphore);
}];

After calling the showWithHandler add a waiting loop using the semaphore

while (dispatch_semaphore_wait(generateNotificationsSemaphore, DISPATCH_TIME_NOW )) {
    [[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate dateWithTimeIntervalSinceNow:20]];

}

Your actual timeout value may be different depending on your needs.