iOS UIAlterController

 UIAlertController *alterController = [UIAlertController alertControllerWithTitle:@"预订提醒"
                                                                             message:title
                                                                      preferredStyle:UIAlertControllerStyleAlert];
    UIAlertAction *actionCancel = [UIAlertAction actionWithTitle:@"取消"
                                                           style:UIAlertActionStyleDefault
                                                         handler:^(UIAlertAction * _Nonnull action) { }];

    UIAlertAction *actionSubmit = [UIAlertAction actionWithTitle:@"确定"
                                                           style:UIAlertActionStyleDefault
                                                         handler:^(UIAlertAction * _Nonnull action) {}];

    [alterController addAction:actionCancel];
    [alterController addAction:actionSubmit];
    [self presentViewController:alterController animated:YES completion:^{}];