如何在 iOS 中全屏显示 UIAlertView？

Question

如何在 iOS 中全屏显示 UIAlertView？有时会弹出 tableview，这是一个非常大的问题。所以使用 alertview 显示 tableview 很容易，但不会扩展大小。为此，如何在 iOs 中全屏显示警报视图？

Answer 1

你不能change/alter苹果默认UIAlertView。

而是使用自定义视图并模仿它的行为，您可能想要添加 YourCustomAlertView 来喜欢：

CustomAlert.h

@interface CustomAlert : NSObject

+ (void)alertShow;

+ (void)alertHide;

@end

CustomAlert.m

@implementation CustomAlert

+ (void)alertShow 
{
    UIWindow *window = [UIApplication sharedApplication].keyWindow;

    UIView *existingView = [window viewWithTag:123456789];

    if (existingView != nil ) // removes existing alert view to avoid multi occurance
    {
        [existingView removeFromSuperview];
    }
    UIView *YourCustomAlertView = [[UIView alloc] initWithFrame:YourFrame];

    YourCustomAlertView.tag = 123456789; // add tag to remove the view later

    // ...

    [window addSubview: YourCustomAlertView]; 
    //this will place your `YourCustomAlertView` to the top most like the default UIAlertView... 

    [UIView animateWithDuration:0.3 animations:^{ [YourCustomAlertView setAlpha:1]; }];
}

+ (void)alertHide
{
    UIWindow *window = [UIApplication sharedApplication].keyWindow;

    UIView * YourCustomAlertView = [window viewWithTag: 123456789];

    [UIView animateWithDuration:0.3 animations:^{

        [YourCustomAlertView setAlpha:0];

    } completion:^(BOOL done){ if (done) { [YourCustomAlertView removeFromSuperview]; } }];
}

@end

像这样使用它：

[CustomAlert alertShow];

注意： 这只是制作 CustomUIAlertView 的指南，或者如果您不想自己搜索一些现成的 CustomAlertView，抱歉我不使用任何所以我不能推荐..

这只是一个示例，您可以随意更改任何内容，也许您想添加 initWithTitle: message: button: 由您决定。以及许多其他细节...

干杯！ :)

Answer 2

iOS Developer Library 说：

Use the properties and methods defined in this class to set the title, message, and delegate of an alert view and configure the buttons. You must set a delegate if you add custom buttons. The delegate should conform to the UIAlertViewDelegate protocol. Use the show method to display an alert view once it is configured.

所以没办法修改UIALertView。您需要创建自己的 AlertView.

只需创建一个视图并在需要显示警报时使其可见。 github like this . Also you can find on Cocoapods 示例中也有示例。

如何在 iOS 中全屏显示 UIAlertView？

How can I display an UIAlertView as full screen in iOS?

iphone

objective-c

uialertview

ios