目前的小型ModalVIewController ObjectiveC

Question

我的任务是在一些现有的VC中添加新的简单通知模式视图.充其量,我想实现一个在当前视图中显示notificationVC的函数.

有很多类似的问题,但它们不适合我或需要代表,segues等.

谢谢,这就像我想要的:

Answer 1

如果要在另一个视图控制器上显示视图控制器,最简单的方法是将其modalPresentationStyle设置为UIModalPresentationOverFullScreen或UIModalPresentationOverCurrentContext.如果呈现的视图控制器的视图具有alpha小于1的背景颜色,则呈现视图控制器的视图将显示.使用您的示例,在您的呈现视图控制器中,您可以说:

- (void) presentNotificationViewController
{
    NotificationViewController *notificationVC = [[NotificationViewController alloc] init];
    notificationVC.titleText = @"My Notification Title";
    notificationVC.image = image;
    notificationVC.modalPresentationStyle = UIModalPresentationOverFullScreen;
    notificationVC.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
    [self presentViewController:notificationVC animated:YES completion:nil];
}

然后你NotificationViewController.m可以这样:

#import "NotificationViewController.h"

@interface NotificationViewController ()
@property (weak, nonatomic) IBOutlet UIView *contentView;
@property (weak, nonatomic) IBOutlet UILabel *notificationTitleLabel;
@property (weak, nonatomic) IBOutlet UIButton *dismissButton;
@property (weak, nonatomic) IBOutlet UIImageView *imageView;

@end

@implementation NotificationViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    self.view.backgroundColor = [UIColor colorWithWhite:0.0 alpha:0.60];

    self.contentView.layer.cornerRadius = 3.0;

    self.notificationTitleLabel.text = self.titleText;

    self.imageView.image = self.image;

    self.dismissButton.layer.cornerRadius = 3.0;
    self.dismissButton.layer.borderColor = [UIColor blackColor].CGColor;
    self.dismissButton.layer.borderWidth = 2.0;
    // etc.

}


- (IBAction)dismissPressed:(UIButton *)sender {
    [self dismissViewControllerAnimated:YES completion:nil];
}

@end

或者无论你想要什么.请注意,我将视图的背景颜色设置为半透明,而我有一个不透明的contentView,它充当实际的警报视图.contentView标签,按钮和图像视图作为子视图.此代码以及.xib,其中我使用约束设置我的UI,导致: