iOS 之UIAlertController的使用方法

UIAlertView在IOS 8以上版本已经过时了，官方推荐我们使用UIAlertController代替UIAlertView、UIActionSheet

1､UIAlertController显示普通的Alert

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1. - (IBAction)showAlert:(UIButton *)sender {  
2.     //显示提示框  
3.     //过时  
4. //    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Title" message:@"message" delegate:self cancelButtonTitle:@"cancel" otherButtonTitles:@"ok", nil];  
5. //    [alert show];  
6.     UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"提示"  
7.                                                                    message:@"确定删除该设备信息？"  
8.                                                             preferredStyle:UIAlertControllerStyleAlert];  
9.       
10.     UIAlertAction* defaultAction = [UIAlertAction actionWithTitle:@"删除" style:UIAlertActionStyleDefault  
11.                                                           handler:^(UIAlertAction * action) {  
12.                                                               //响应事件  
13.                                                               NSLog(@"action = %@", action);  
14.                                                           }];  
15.     UIAlertAction* cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDefault  
16.                                                           handler:^(UIAlertAction * action) {  
17.                                                               //响应事件  
18.                                                               NSLog(@"action = %@", action);  
19.                                                           }];  
20.   
21.     [alert addAction:defaultAction];  
22.     [alert addAction:cancelAction];  
23.     [self presentViewController:alert animated:YES completion:nil];  
24. }  

2､UIAlertController显示带文本输入的的Alert

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1. - (IBAction)showList:(UIButton *)sender {  
2.     //提示框添加文本输入框  
3.     UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"Title"  
4.                                                                    message:@"This is an alert."  
5.                                                             preferredStyle:UIAlertControllerStyleAlert];  
6.       
7.     UIAlertAction* okAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault  
8.                                                           handler:^(UIAlertAction * action) {  
9.                                                               //响应事件  
10.                                                               //得到文本信息  
11.                                                               for(UITextField *text in alert.textFields){  
12.                                                                   NSLog(@"text = %@", text.text);  
13.                                                               }  
14.                                                           }];  
15.     UIAlertAction* cancelAction = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel  
16.                                                          handler:^(UIAlertAction * action) {  
17.                                                              //响应事件  
18.                                                              NSLog(@"action = %@", alert.textFields);  
19.                                                          }];  
20.     [alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {  
21.         textField.placeholder = @"登录";  
22.     }];  
23.     [alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {  
24.         textField.placeholder = @"密码";  
25.         textField.secureTextEntry = YES;  
26.     }];  
27.       
28.     [alert addAction:okAction];  
29.     [alert addAction:cancelAction];  
30.     [self presentViewController:alert animated:YES completion:nil];  
31.   
32. }  

3､UIAlertController显示ActionSheet

- (IBAction)showSheet:(UIButton *)sender {      //显示弹出框列表选择      UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"Title"                                                                     message:@"This is an Sheet."                                                              preferredStyle:UIAlertControllerStyleActionSheet];            UIAlertAction* cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel                                                            handler:^(UIAlertAction * action) {                                                                //响应事件                                                                NSLog(@"action = %@", action);                                                            }];      UIAlertAction* deleteAction = [UIAlertAction actionWithTitle:@"删除" style:UIAlertActionStyleDestructive                                                           handler:^(UIAlertAction * action) {                                                               //响应事件                                                               NSLog(@"action = %@", action);                                                           }];      UIAlertAction* saveAction = [UIAlertAction actionWithTitle:@"保存" style:UIAlertActionStyleDefault                                                           handler:^(UIAlertAction * action) {                                                               //响应事件                                                               NSLog(@"action = %@", action);                                                           }];      [alert addAction:saveAction];      [alert addAction:cancelAction];      [alert addAction:deleteAction];      [self presentViewController:alert animated:YES completion:nil];  } 

原文章地址：IOS使用UIAlertController三种显示提示框代码