alertview

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/sndongcheng/article/details/83241224

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    CGRect screen = [[UIScreen mainScreen] bounds];
    //先设置按钮
    UIButton* buttonAlertView = [UIButton buttonWithType:UIButtonTypeSystem];
    [buttonAlertView setTitle:@"Test警告框" forState:UIControlStateNormal];
    CGFloat buttonAlertViewWidth = 100;
    CGFloat buttonAlertViewHeight = 30;
    CGFloat buttonAlertViewTopView = 130;
    CGFloat buttonAlertViewLeftView = (screen.size.width - buttonAlertViewWidth)/2;
    buttonAlertView.frame = CGRectMake(buttonAlertViewLeftView, buttonAlertViewTopView, buttonAlertViewWidth, buttonAlertViewHeight);
    [buttonAlertView addTarget:self action:@selector(testAlertView:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:buttonAlertView];
}

//在按钮的方法中设置alertview
- (void)testAlertView:(id)sender {
    UIAlertController* alertController = [UIAlertController alertControllerWithTitle:@"Alert" message:@"Alert text goes here" preferredStyle:UIAlertControllerStyleAlert];
    UIAlertAction* noAction = [UIAlertAction actionWithTitle:@"NO" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action){
        NSLog(@"Tap No Button");
    }];
    UIAlertAction* yesAction = [UIAlertAction actionWithTitle:@"YES" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action){
        NSLog(@"Tap Yes Button");
    }];
    [alertController addAction:noAction];
    [alertController addAction:yesAction];
    //show
    [self presentViewController:alertController animated:true completion:nil];
    
}




- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


@end