ios uialertview

uialertview  警告提示框的实现
UIAlertView *view = [[UIAlertView alloc]initWithTitle:@"Test"    //标题
2                                               message:@"this is a alert view "   //显示内容
3                                              delegate:nil          //委托，可以点击事件进行处理
4                                     cancelButtonTitle:@"取消"
5                                     otherButtonTitles:@"确定"
6                                                     //,@"其他",    //添加其他按钮 
7 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 nil];
8 [view show];效果图：

 iOS8推出了几个新的“controller”，主要是把类似之前的UIAlertView变成了UIAlertController，

- (void)showOkayCancelAlert {
    NSString *title = NSLocalizedString(@"A Short Title Is Best", nil);
    NSString *message = NSLocalizedString(@"A message should be a short, complete sentence.", nil);
    NSString *cancelButtonTitle = NSLocalizedString(@"Cancel", nil);
    NSString *otherButtonTitle = NSLocalizedString(@"OK", nil);

    UIAlertController *alertController = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleAlert];
    
    // Create the actions.
    UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:cancelButtonTitle style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {
        NSLog(@"The \"Okay/Cancel\" alert's cancel action occured.");
    }];
    
    UIAlertAction *otherAction = [UIAlertAction actionWithTitle:otherButtonTitle style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
        NSLog(@"The \"Okay/Cancel\" alert's other action occured.");
    }];
    
    // Add the actions.
    [alertController addAction:cancelAction];
    [alertController addAction:otherAction];
    
    [self presentViewController:alertController animated:YES completion:nil];
}

 

[alertController addTextFieldWithConfigurationHandler:^(UITextField *textField) {
        // 可以在这里对textfield进行定制，例如改变背景色
        textField.backgroundColor = [UIColor orangeColor];
    }];