ios从另一个 Controller 中删除 subview

Question

我从 Controller A 添加了一个 subview 。现在在 Controller B ( subview Controller )中，当用户完成 View B 时如何重新加载 View A？我添加 subview 的代码:

ChangeProfileImage *changeProfileImage =[[ChangeProfileImage alloc] init];  
    changeProfileImage.modalPresentationStyle = UIModalPresentationFormSheet;
    changeProfileImage.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
    changeProfileImage.view.frame = CGRectMake(50, 50, 300, 300);  
    UIView *dimBackgroundView = [[UIView alloc] initWithFrame:self.view.bounds];
    dimBackgroundView.backgroundColor = [[UIColor grayColor] colorWithAlphaComponent:.5f];  
    [self.view addSubview:dimBackgroundView];
    [self.view addSubview:changeProfileImage.view];

Answer 1

您可以为“dimbackground”设置一个标签..并像这样删除它:

dimBackgroundView.tag = 111;//you will do this line when you create the view.
UIView *view = [controllerA.view viewWithTag:111];
[view removeFromSuperview];

刷新你的viewController:

当用户单击提交按钮并且您删除 B View 时..使用 NSNotificationCenter 发布通知，如下所示:

[[NSNotificationCenter defaultCenter] postNotificationName:@"UserSubmit" object:nil];

并在controllerA .. viewDidLoad中例如将其添加为观察者，如下所示

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(refreshView) name:@"UserSubmit" object:nil];

您将实现此功能:

- (void) refreshView
{
    //Do your stuff
}