Question

我有以下布局。

绿色和橙色视图是添加到视图控制器的额外视图。我想根据用户点击的按钮更改包含的视图控制器视图。

Answer 1

我有答案使用UIContainer在ios中动态显示两个ViewControllers，

我有创建BaseViewController和两个viewControllers（GreenViewController和OrangeViewController），让我们看下面的图像是

并baseView插入了两个UIButton（绿色和橙色按钮），UIContainerView，来源位于下方，

BaseViewController.h档案：

@property (weak, nonatomic) IBOutlet UIView *containView;

@property (weak, nonatomic) UIViewController *currentViewController;

BaseViewController.m档案：

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    _currentViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"GreenViewController"];
    _currentViewController.view.translatesAutoresizingMaskIntoConstraints = NO;

    [self addChildViewController:_currentViewController];
    [self addSubview:_currentViewController.view toView:_containView];
}

- (void)addSubview:(UIView *)subView toView:(UIView*)parentView {
    [parentView addSubview:subView];

    NSDictionary * views = @{@"subView" : subView,};
    NSArray *constraints = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|[subView]|"
                                                                   options:0
                                                                   metrics:0
                                                                     views:views];
    [parentView addConstraints:constraints];
    constraints = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|[subView]|"
                                                          options:0
                                                          metrics:0
                                                            views:views];
    [parentView addConstraints:constraints];
}

- (void)cycleFromViewController:(UIViewController*) oldViewController
               toViewController:(UIViewController*) newViewController {
    [oldViewController willMoveToParentViewController:nil];
    [self addChildViewController:newViewController];
    [self addSubview:newViewController.view toView:self.containView];
    [newViewController.view layoutIfNeeded];

    // set starting state of the transition
    newViewController.view.alpha = 0;

    [UIView animateWithDuration:0.5
                     animations:^{
                         newViewController.view.alpha = 1;
                         oldViewController.view.alpha = 0;
                     }
                     completion:^(BOOL finished) {
                         [oldViewController.view removeFromSuperview];
                         [oldViewController removeFromParentViewController];
                         [newViewController didMoveToParentViewController:self];
                     }];
}

绿色按钮操作位于

之下

- (IBAction)greenViewAction:(id)sender {
    UIViewController *newViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"GreenViewController"];
    newViewController.view.translatesAutoresizingMaskIntoConstraints = NO;
    [self cycleFromViewController:self.currentViewController toViewController:newViewController];
    self.currentViewController = newViewController;

}

橙色按钮操作位于

之下

- (IBAction)orangeViewAction:(id)sender {
    UIViewController *newViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"OrangeViewController"];
    newViewController.view.translatesAutoresizingMaskIntoConstraints = NO;
    [self cycleFromViewController:self.currentViewController toViewController:newViewController];
    self.currentViewController = newViewController;
}

它为我工作，请参阅下面的输出，

希望它有用

容器视图动态更改视图

1 个答案: