ios - 将 CollectionViewController 作为 ChildViewController 添加到 UIView

Question

我正在尝试创建一个 View ，其中包含三个具有不同 View Controller 的 subview (UICollectionViewController、pageviewcontroller 和 uiviewcontroller)。我可以添加一个 uiviewcontroller 但不允许添加其他两个 Controller 。我收到此错误.....

Incompatible pointer types sending 'UICollectionView *__weak' to parameter of type 'UIViewController *'

他们有什么方法可以将这些 Controller 添加到我的 subview 中吗？

Answer 1

我不知道你为什么要在 View 中添加 ViewControllers，我从来不需要它。我试着这样做，如果可以帮助你这是我的运行代码:

ViewController.h

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@property (nonatomic, retain) UICollectionViewController  *collectionViewController;
@property (nonatomic, retain) UIPageViewController        *pageViewController;
@property (nonatomic, retain) UIViewController            *simpleViewController;

@end

ViewController.m

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

@synthesize collectionViewController;
@synthesize pageViewController;
@synthesize simpleViewController;


- (void)viewDidLoad
{
    [super viewDidLoad];

    UICollectionViewLayout *layout  = [[UICollectionViewLayout alloc] init];
    collectionViewController = [[UICollectionViewController alloc] initWithCollectionViewLayout:layout];
    pageViewController       = [[UIPageViewController alloc] init];
    simpleViewController     = [[UIViewController alloc] init];

    // Do your stuff with this controllers

    [self.view addSubview:collectionViewController.view];
    [self.view addSubview:pageViewController.view];
    [self.view addSubview:simpleViewController.view];

}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end