UIKit 框架之UIAlertController

IOS8之后增加了UIAlertController类,它可以表示UIAlertView和UIActionSheet.它继承自UIViewController。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    self.window.backgroundColor=[UIColor whiteColor];

    [self.window makeKeyAndVisible];

    

    ViewController *vc=[[ViewController alloc]init];

    UINavigationController *nvc=[[UINavigationController alloc]initWithRootViewController:vc];

    self.window.rootViewController=nvc;

    return YES;

}

 

//

//  ViewController.m

//  AlertVC

//

//  Created by City--Online on 15/5/25.

//  Copyright (c) 2015年 XQB. All rights reserved.

//



#import "ViewController.h"



@interface ViewController ()



@end



@implementation ViewController



- (void)viewDidLoad {

    [super viewDidLoad];

    UIButton *btn=[UIButton buttonWithType:UIButtonTypeCustom];

    btn.frame=CGRectMake(100, 100, 50, 50);

    [btn setTitle:@"按钮" forState:UIControlStateNormal];

    [btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];

    btn.layer.borderWidth=2.0;

    [btn addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:btn];

    

    

    

    

} 

-(void)btnClick:(id)sender

{

//    UIAlertController *alert=[UIAlertController alertControllerWithTitle:@"Title" message:@"message" preferredStyle:UIAlertControllerStyleAlert];

//    

//    [alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {

//        textField.text=@"name";

//        textField.clearsOnBeginEditing=YES;

//    }];

//    [alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {

//        textField.text=@"password";

//        textField.clearsOnBeginEditing=YES;

//    }];

    

    UIAlertController *alert=[UIAlertController alertControllerWithTitle:@"Title" message:@"message" preferredStyle:UIAlertControllerStyleActionSheet];

    

    UIAlertAction *actionOk=[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {

        NSLog(@"确定");

    }];

    UIAlertAction *actionCancel=[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {

        NSLog(@"取消");

    }];

    [alert addAction:actionOk];

    [alert addAction:actionCancel];

    [self presentViewController:alert animated:YES completion:nil];

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}



@end