- (void)viewDidLoad {[super viewDidLoad];//UIAlertView的使用[self showAlert];//UIAcyionSheet使用
//    [self showAction];#pragma mark  [self showAlertController];方法不可以放在此处因为UIAlertControl继承与UIViewController//UIAlertControl的使用
//    [self showAlertController];}

-(void)showAlert{UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"紧急通知" message:@"由于幸福指数哦不断下降，经调查和假期成线性关系，特批以后工作一天休息一天" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];alertView.alertViewStyle =  UIAlertViewStyleDefault;/*UIAlertViewStyleDefault ，默认UIAlertViewStyleSecureTextInput, 密码输入框UIAlertViewStylePlainTextInput,  文本输入框UIAlertViewStyleLoginAndPasswordInput 用户及密码*/[alertView show];
}#pragma mark - UIALertDelegate
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{switch (buttonIndex) {case 0:NSLog(@"点击%ld",buttonIndex);break;case 1:NSLog(@"点击%ld",buttonIndex);break;default:break;}
}

-(void)showAction{UIActionSheet *actionSheet = [[UIActionSheet alloc]initWithTitle:@"请假\n选择请假类型" delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:@"事假" otherButtonTitles:@"病假",@"产假", nil];[actionSheet showInView:self.view];
}
- (void)didReceiveMemoryWarning {[super didReceiveMemoryWarning];// Dispose of any resources that can be recreated.
}
#pragma mark UIActionSheetDelegate
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{switch (buttonIndex) {case 0:NSLog(@"点击%ld",buttonIndex);break;case 1:NSLog(@"点击%ld",buttonIndex);break;case 2:NSLog(@"点击%ld",buttonIndex);break;default:break;}
}

-(void)showAlertController{//UIAlertControllerStyle两种类型UIAlertControllerStyleAlert类似UIAlertView//UIAlertControllerStyleActionSheet类似UIActionSheetUIAlertController *alertControl = [UIAlertController alertControllerWithTitle:@"you  and  me" message:@"together forever" preferredStyle:UIAlertControllerStyleAlert];//block代码块取代了delegateUIAlertAction *actionOne = [UIAlertAction actionWithTitle:@"No matter of life and death" style:UIAlertActionStyleDestructive handler:^(UIAlertAction *action) {NSLog(@"生死相依");}];UIAlertAction *alertTwo = [UIAlertAction actionWithTitle:@"Share weal and woe" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {NSLog(@"同甘共苦");}];UIAlertAction *alertthree = [UIAlertAction actionWithTitle:@"Sure" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {NSLog(@"确定");}];[alertControl addAction:actionOne];[alertControl addAction:alertTwo];[alertControl addAction:alertthree];//UIAlertControllerStyle类型为UIAlertControllerStyleAlert可以添加addTextFieldWithConfigurationHandler:^(UITextField *textField)[alertControl addTextFieldWithConfigurationHandler:^(UITextField *textField) {textField.text = @"for love ";}];[self presentViewController:alertControl animated:YES completion:nil];}