Question

我正在开发一个iOS目标C项目，我想在我的应用程序中使用导航抽屉。我不想使用任何第三方库。我正在自己开发所有代码。

这些是我已经完成的First或HomeViewController的一些屏幕截图。

当我点击菜单按钮时，我的抽屉（嵌入Second或NavigationTableViewController的容器视图）成功打开。但我无法从Home View Controller滚动或访问表格元素。

请帮忙。

我也在这里发布我的代码。

HomeViewController.m

#import "HomeViewController.h"
#import "HomeCollectionViewItemCell.h"
#import "NavigationTableViewController.h"

#define kCellsPerRow    2

@interface HomeViewController () <UICollectionViewDelegate, UICollectionViewDataSource>

@property (weak, nonatomic) IBOutlet UIView *viewNavigationPopUp;
@property (weak, nonatomic) IBOutlet UICollectionView *collectionView;
@property (weak, nonatomic) IBOutlet UICollectionViewFlowLayout *collectionViewFlowLayout;
@property (weak, nonatomic) IBOutlet UIImageView *imageViewSlider;
@property (weak, nonatomic) IBOutlet UIPageControl *pageControlSlider;
@property (nonatomic) NSInteger sliderImageCount;

@end

@implementation HomeViewController

#pragma mark - View controller life cycle methods

- (void)viewDidLoad {
    [super viewDidLoad];
    [self setSliderImageCount:0];

    [self.collectionView setDataSource:self];
    [self.collectionView setDelegate:self];

    [self.imageViewSlider setAnimationImages:@[[UIImage imageNamed:@"slider_img1.jpg"], [UIImage imageNamed:@"slider_img2.jpg"], [UIImage imageNamed:@"slider_img3.jpg"], [UIImage imageNamed:@"slider_img4.jpg"]]];

    //[self.imageViewSlider setImage:[self.imageViewSlider.animationImages objectAtIndex:self.sliderImageCount]];
    [self.pageControlSlider setCurrentPage:self.sliderImageCount];

    UISwipeGestureRecognizer *swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleImageSliderSwipe:)];
    [swipeLeft setDirection:UISwipeGestureRecognizerDirectionLeft];
    [self.imageViewSlider addGestureRecognizer:swipeLeft];

    UISwipeGestureRecognizer *swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleImageSliderSwipe:)];
    [swipeRight setDirection:UISwipeGestureRecognizerDirectionRight];
    [self.imageViewSlider addGestureRecognizer:swipeRight];
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
}

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];

    CGFloat length = (self.collectionView.frame.size.width - self.collectionViewFlowLayout.sectionInset.left - self.collectionViewFlowLayout.sectionInset.right - (self.collectionViewFlowLayout.minimumInteritemSpacing * (kCellsPerRow - 1))) / kCellsPerRow;
    [self.collectionViewFlowLayout setItemSize:CGSizeMake(length, length)];
}

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
}

- (void)viewDidDisappear:(BOOL)animated {
    [super viewDidDisappear:animated];
}

#pragma mark - Collection view methods

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
    HomeCollectionViewItemCell *homeCollectionViewItemCell = [self.collectionView dequeueReusableCellWithReuseIdentifier:@"HomeCollectionViewItemCell" forIndexPath:indexPath];
    return homeCollectionViewItemCell;
}

- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
    return 1;
}

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
    return 4;
}

#pragma mark - button acrion methods

- (IBAction)buttonToggleDrawerMenuAction:(id)sender {
    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.25];

    CGRect newViewFrame = [self.view frame];
    newViewFrame.origin.x = [self.view frame].origin.x > 0.0 ? 0.0 : [[UIScreen mainScreen] bounds].size.width * 0.797;
    [self.view setFrame:newViewFrame];

    [UIView commitAnimations];
}

- (void)handleImageSliderSwipe:(UISwipeGestureRecognizer *)swipe {
    [self setSliderImageCount:[swipe direction] == UISwipeGestureRecognizerDirectionLeft ? (self.sliderImageCount + 1) : (self.sliderImageCount - 1)];
    [self setSliderImageCount:(self.sliderImageCount < 0) ? 3 : self.sliderImageCount];
    [self setSliderImageCount:(self.sliderImageCount > 3) ? 0 : self.sliderImageCount];
    [self.imageViewSlider setImage:[self.imageViewSlider.animationImages objectAtIndex:self.sliderImageCount]];
    [self.pageControlSlider setCurrentPage:self.sliderImageCount];
}

#pragma mark - other

- (UIStatusBarStyle)preferredStatusBarStyle {
    return UIStatusBarStyleLightContent;
}

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    if ([[segue identifier] isEqualToString:@"EmbedSegue"]) {
        NavigationTableViewController *navigationTableViewController = (NavigationTableViewController *)[segue destinationViewController];
        [navigationTableViewController setHomeViewController:self];
    }
}

@end

NavigationTableViewController.m

#import "NavigationTableViewController.h"

@interface NavigationTableViewController () <UITableViewDataSource, UITableViewDelegate>

@property (strong, nonatomic) IBOutlet UITableView *navigationTableView;

@end

@implementation NavigationTableViewController

#pragma mark - View controller life cycle methods

- (void)viewDidLoad {
    [super viewDidLoad];

    [self.navigationTableView setDataSource:self];
    [self.navigationTableView setDelegate:self];
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
}

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
}

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
}

- (void)viewDidDisappear:(BOOL)animated {
    [super viewDidDisappear:animated];
}

#pragma mark - table view methods

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return 20;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"NavigationTableViewCell" forIndexPath:indexPath];
    cell.textLabel.text = [NSString stringWithFormat:@"Item - %ld", (long)indexPath.row];

    return cell;
}

#pragma mark - other

- (UIStatusBarStyle)preferredStatusBarStyle {
    return UIStatusBarStyleLightContent;
}

@end

NavigationTableViewController.h

#import <UIKit/UIKit.h>

@class HomeViewController;
@interface NavigationTableViewController : UIViewController

@property (weak, nonatomic) HomeViewController *homeViewController;

@end

更新

我有一些线索，但没有得到为什么会发生这种情况？实际上我的代码是正确的，但由于自动布局限制，我遇到了这个问题。

假设我的视图控制器视图的框架是（0,0,414,736），容器框架是（-330,0,330,736）。我的自动布局有以下限制：

1. 容器高度= [viewController视图] .size.height
2. 容器宽度= [viewController视图] .size.width * 0.8 // 0是常量，乘数是0.8
3. 容器尾随= [viewController视图]前导+ 0; // 0是常数，乘数是1
4. 容器顶部= [viewController视图]顶部布局指南，即0

此时我可以滚动以及在表格视图中选择项目。但是当我按下菜单按钮时，我的容器框架发生了变化，变成了（0,0,330,736）。现在当我的容器框架发生变化时，我无法滚动或选择tableview内的项目。

基本上我的意思是如果您要在运行时更改容器框架，它将不允许访问嵌入其中的任何视图组件。

如果有人知道这个问题的补救措施，那么请告诉我。 任何帮助表示赞赏。提前致谢：）

无法从First View Controller的Container View访问UITableView（第二个视图控制器）

0 个答案: