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  • UI控件(UIAlertController)

    @implementation ViewController
    
    - (void)viewDidLoad {
        [super viewDidLoad];
        
        UIButton *_button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        [_button setTitle:@"按钮" forState:UIControlStateNormal];
        _button.frame = CGRectMake(10, 20, 50, 20);
        
        [self.view addSubview:_button];
        
        [_button addTarget:self action:@selector(doClick) forControlEvents:UIControlEventTouchDown];
        
    }
    
    -(void)doClick{
        
        //  UIAlertControllerStyleAlert 替代 UIAlertView
        //  UIAlertControllerStyleActionSheet 替代 UIActionSheet
        //  UIAlertionSheet是标准的确认-取消选择框,要求至少要两个按钮
        UIAlertController *_alertcontroller = [UIAlertController alertControllerWithTitle:@"标题" message:@"提示信息" preferredStyle:UIAlertControllerStyleAlert];
        
        // 蓝色加粗
        UIAlertAction *action1 = [UIAlertAction actionWithTitle:@"cancel" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
            NSLog(@"cancel");
        }];
        
        // 蓝色
        UIAlertAction *action2 = [UIAlertAction actionWithTitle:@"default" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
            NSLog(@"default");
        }];
        
        // 红色
        UIAlertAction *action3 = [UIAlertAction actionWithTitle:@"Destructive" style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) {
            NSLog(@"Destructive");
        }];
        
        [_alertcontroller addAction:action1];
        [_alertcontroller addAction:action2];
        [_alertcontroller addAction:action3];
        
        
        [self presentViewController:_alertcontroller animated:YES completion:nil];
    }
    
    @end
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  • 原文地址:https://www.cnblogs.com/Fredric-2013/p/5208132.html
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