ios - 如何在 UIAlertController 上添加动态按钮？

Question

我正在将我的代码从使用 UIActionSheet 转换为使用 UIAlertController。

我使用 UIActionSheet 的方式是这样的:

UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Gender"
                                                         delegate:self
                                                cancelButtonTitle:nil
                                           destructiveButtonTitle:nil
                                                otherButtonTitles:nil];
for (NSDictionary *genderInfo in self.genderList) {
    NSString *gender = [[genderInfo objectForKey:@"description"] capitalizedString];
    [actionSheet addButtonWithTitle:gender];
}
[actionSheet addButtonWithTitle:@"Cancel"];

并且只处理在 action sheet 的委托(delegate)方法上按下了什么按钮。

在将其转换为警报 Controller 时，我注意到每个警报操作都有一个处理程序。我想知道我将如何实现警报 Controller 以具有我可以处理这些操作的动态按钮。

Answer 1

这里我提到了使用图像和文本将数组动态加载到 UIAlertController 的代码:Output Image here

 NSArray *numbersArrayList = @[@"One", @"Two", @"Three", @"Four", @"Five", @"Six"];
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Numbers:"
                                                                         message:nil
                                                                  preferredStyle:UIAlertControllerStyleActionSheet];
for (int j =0 ; j<numbersArrayList.count; j++){
    NSString *titleString = numbersArrayList[j];
    UIAlertAction *action = [UIAlertAction actionWithTitle:titleString style:UIAlertActionStyleDefault handler:^(UIAlertAction *action){
        NSLog(@"Selected Value: %@",numbersArrayList[j]);

    }];
    [action setValue:[[UIImage imageNamed:@"USA16.png"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal] forKey:@"image"];
    [alertController addAction:action];
}
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"Cancel"
                                                       style:UIAlertActionStyleCancel
                                                     handler:^(UIAlertAction *action) {
                                                     }];
[alertController addAction:cancelAction];
[self presentViewController:alertController animated:YES completion:nil];