iOS-8及更高版本- UITableView在UIAlertController中

Question

我知道如何通过使用类似于Custom UI的accessoryView在UIAlertView中添加任何Custom UI，但我现在很好奇，如果我们仍然可以选择在UIAlertController中添加Custom UI，那么我想要的是在UIAlertController中添加一个具有清晰理解的UITableViewController。

Answer 1

多亏了StackOverflow用户，我才能完成这个任务。

这是我的代码：

UIViewController *controller = [[UIViewController alloc]init];
UITableView *alertTableView;
CGRect rect;
if (array.count < 4) {
    rect = CGRectMake(0, 0, 272, 100);
    [controller setPreferredContentSize:rect.size];

}
else if (array.count < 6){
    rect = CGRectMake(0, 0, 272, 150);
    [controller setPreferredContentSize:rect.size];
}
else if (array.count < 8){
    rect = CGRectMake(0, 0, 272, 200);
    [controller setPreferredContentSize:rect.size];

}
else {
    rect = CGRectMake(0, 0, 272, 250);
    [controller setPreferredContentSize:rect.size];
 }

alertTableView  = [[UITableView alloc]initWithFrame:rect];
alertTableView.delegate = self;
alertTableView.dataSource = self;
alertTableView.tableFooterView = [[UIView alloc]initWithFrame:CGRectZero];
[alertTableView setSeparatorStyle:UITableViewCellSeparatorStyleSingleLine];
[alertTableView setTag:kAlertTableViewTag];
[controller.view addSubview:alertTableView];
[controller.view bringSubviewToFront:alertTableView];
[controller.view setUserInteractionEnabled:YES];
[alertTableView setUserInteractionEnabled:YES];
[alertTableView setAllowsSelection:YES];
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Title" message:@"Message" preferredStyle:UIAlertControllerStyleAlert];
[alertController setValue:controller forKey:@"contentViewController"];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleDestructive handler:^(UIAlertAction *action) {

}];
[alertController addAction:cancelAction];
[self presentViewController:alertController animated:YES completion:nil];

​

​

Answer 2

以下是Swift中简化形式的@Syed Ali Salman的答复：

let alertController = UIAlertController(title: "The Title",
                                        message: "Here's a message.",
                                        preferredStyle: .Alert)

let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel)
{ (action) in
    // ...
}
alertController.addAction(cancelAction)

let okAction = UIAlertAction(title: "OK", style: .Default)
{ (action) in
    // ...
}
alertController.addAction(okAction)

let tableViewController = UITableViewController()
tableViewController.preferredContentSize = CGSize(width: 272, height: 176) // 4 default cell heights.
alertController.setValue(tableViewController, forKey: "contentViewController")

yourTopViewController().presentViewController(alertController, animated: true)
{
    // ...
}

Answer 3

UIViewController *tempViewController = [[UIViewController alloc] init];
    tempViewController.view.backgroundColor = [UIColor redColor];

    [alertController setValue:tempViewController forKey:@"contentViewController"];

这段代码将在警报视图上显示一个红色视图，现在您可以轻松地将一个UITableView放在UIViewController.Happy UIAlertController自定义中;)