问题描述
在UIAlertController之外点击时如何关闭UIAlertController?
How to dismiss UIAlertController when tap outside the UIAlertController?
我可以添加样式UIAlertActionStyleCancel的UIAlertAction以关闭UIAlertController.
I can add a UIAlertAction of style UIAlertActionStyleCancel to dismiss the UIAlertController.
但是我想添加一个功能，当用户在UIAlertController之外点击时，UIAlertController将关闭.怎么做?谢谢.
But I want to add the function that when user tap outside the UIAlertController the UIAlertController will dismiss. How to do that? Thank you.
推荐答案
添加样式为UIAlertActionStyleCancel的单独的取消动作.这样，当用户在外面轻按时，您将获得回调.
Add a separate cancel action with style UIAlertActionStyleCancel. So that when user taps outside, you would get the callback.
Obj-c
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Alert Title" message:@"A Message" preferredStyle:UIAlertControllerStyleActionSheet];
[alertController addAction:[UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
// Called when user taps outside
}]];
Swift 5.0
let alertController = UIAlertController(title: "Alert Title", message: "A Message", preferredStyle: .actionSheet)
alertController.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: {
action in
// Called when user taps outside
}))
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