iOS - UIAlertController三种显示提示框代码

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

- (IBAction)showAlert:(UIButton *)sender {
    //显示提示框
    //过时
//    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Title" message:@"message" delegate:self cancelButtonTitle:@"cancel" otherButtonTitles:@"ok", nil];
//    [alert show];
    UIAlertController* alert = [UIAlertController alertControllerWithTitle:@"Title"
                                                                   message:@"This is an alert."
                                                            preferredStyle:UIAlertControllerStyleAlert];

    UIAlertAction* defaultAction = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault
                                                          handler:^(UIAlertAction * action) {
                                                              //响应事件
                                                              NSLog(@"action = %@", action);
                                                          }];
    UIAlertAction* cancelAction = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleDefault
                                                          handler:^(UIAlertAction * action) {
                                                              //响应事件
                                                              NSLog(@"action = %@", action);
                                                          }];

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

2､UIAlertController显示带文本输入的的Alert

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];
}