更改 UIAlertController 选定的按钮颜色

Question

我有这行代码：

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:title message:nil preferredStyle:UIAlertControllerStyleActionSheet];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:cancelTitle style:UIAlertActionStyleCancel handler:^(UIAlertAction * action) {
    NSLog(@"cancel registration");
}];
[alertController addAction:cancelAction];
alertController.view.tintColor = [UIColor redColor];

我想更改选中时取消按钮的颜色。我怎样才能做到这一点？请帮忙。

Answer 1

只需更改 UIAlertController 视图的色调颜色即可。

 UIAlertController *alertController = [UIAlertController alertControllerWithTitle:title message:nil preferredStyle:UIAlertControllerStyleActionSheet];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:cancelTitle style:UIAlertActionStyleCancel handler:^(UIAlertAction * action) {
    NSLog(@"cancel registration");
     alertController.view.tintColor = [UIColor redColor];
}];
[alertController addAction:cancelAction];

Answer 2

试试这个

Swift

   {
        // Bugfix: iOS9 - Tint not fully Applied without Reapplying
        alertController.view.tintColor = UIColor.redColor()
    }

Objective-C

   {
        // Bugfix: iOS9 - Tint not fully Applied without Reapplying
        alertController.view.tintColor = [UIColor redColor];
    }

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Answer 3

试试这个

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:title message:nil preferredStyle:UIAlertControllerStyleActionSheet];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:cancelTitle style:UIAlertActionStyleCancel handler:^(UIAlertAction * action) {
NSLog(@"cancel registration");
}];
[alertController addAction:cancelAction];

try setting the tint color AFTER you present your alert controller:

[self presentViewController: alertController animated:YES completion:nil];
 alertController.view.tintColor = [UIColor redColor];

Swift

var alertController: UIAlertController = UIAlertController.alertControllerWithTitle(title, message: nil, preferredStyle: .ActionSheet)
var cancelAction: UIAlertAction = UIAlertAction.actionWithTitle(cancelTitle, style: .Cancel, handler: {(action: UIAlertAction) -> Void in
    NSLog("cancel registration")
})
alertController.addAction(cancelAction)

try setting the tint color AFTER you present your alert controller:

self.presentViewController(alertController, animated: true, completion: { _ in })
alertController.view.tintColor = UIColor.redColor()

更改 UIAlertController 选定的按钮颜色

Change UIAlertController selected button color

ios

objective-c

swift

uialertcontroller