iOS, Toast

NSString *message = @"Some message...";

UIAlertView *toast = [[UIAlertView alloc] initWithTitle:nil
                                                message:message
                                               delegate:nil
                                      cancelButtonTitle:nil
                                      otherButtonTitles:nil, nil];
[toast show];

int duration = 1; // duration in seconds

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
    [toast dismissWithClickedButtonIndex:0 animated:YES];
});

ref : http://stackoverflow.com/questions/18680891/displaying-a-message-in-ios-which-has-the-same-functionality-as-toast-in-android