UIAlertController相关

//
//  ViewController.m
//  AlertViewInIOS9_0
//
//  Created by zhangfan on 16/6/28.
//  Copyright © 2016年 Fan Zhang. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    UIButton *button = [UIButton buttonWithType:(UIButtonTypeCustom)];
    button.frame = CGRectMake(100, 100, 100, 100);
    // 给BUTTON 添加点击方法
    [button addTarget:self action:@selector(actionButton:) forControlEvents:(UIControlEventTouchUpInside)];
    button.backgroundColor = [UIColor blueColor];
    [self.view addSubview:button];
}

// button的点击方法
- (void)actionButton:(UIButton *)button
{
    // 初始化一个一个UIAlertController
    // 参数preferredStyle:是IAlertController的样式
    // UIAlertControllerStyleAlert 创建出来相当于UIAlertView
    // UIAlertControllerStyleActionSheet 创建出来相当于 UIActionSheet
    UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"提示" message:@"静" preferredStyle:UIAlertControllerStyleAlert];

    // 创建按钮
    UIAlertAction *okAction = [UIAlertAction actionWithTitle:@"确定" style:(UIAlertActionStyleDefault) handler:^(UIAlertAction *action) {
        NSLog(@"注意学习");
    }];
    // 创建按钮
    // 注意取消按钮只能添加一个
    UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:(UIAlertActionStyleCancel) handler:^(UIAlertAction *action) {
        // 点击按钮后的方法直接在这里面写
        NSLog(@"注意学习");
    }];

    //    // 创建警告按钮
    //    UIAlertAction *structlAction = [UIAlertAction actionWithTitle:@"警告" style:(UIAlertActionStyleDestructive) handler:^(UIAlertAction *action) {
    //        NSLog(@"注意学习");
    //    }];
    //
    // 添加按钮 将按钮添加到UIAlertController对象上
    [alertController addAction:okAction];
    [alertController addAction:cancelAction];
    //[alertController addAction:structlAction];

    // 只有在alert情况下才可以添加文本框
//    [alertController addTextFieldWithConfigurationHandler:^(UITextField *textField) {
//        textField.placeholder = @"用户名";
//        textField.secureTextEntry = YES;
//    }];

    //    // 取出文本
    //    UITextField *text = alertController.textFields.firstObject;
    //    UIAlertAction *action = alertController.actions.firstObject;

    // 将UIAlertController模态出来 相当于UIAlertView show 的方法
    [self presentViewController:alertController animated:YES completion:nil];
}

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

@end