Xibs and Scrollview

Question

我在这方面还是个新手，所以请原谅我。我认为我可以在ScrollView中加载Xib，我看到的应用似乎是这样做的，但我们讨论的是两个不同的类。但我还是会问-是否有任何实际的方法有一个scrollView与静态Xib在顶部，其中按钮定义在UI不移动，而下面的视图做。我相信这在cocos2d中很容易实现，但对于我想要做的事情来说，这有点过头了。

—Edit—

冒着让自己尴尬的风险，我尝试了两种可能的解决方案。在语法上添加按钮会添加一个在滚动时移动的按钮。添加笔尖似乎可以防止滚动屏幕滚动。下面是代码，没有尝试添加任何按钮，一切都很好。

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    NSLog(@"View Loaded");

    [mdm setMapSetupInfoWithRows:60 columns:90 cellSize:32];
    [mdm initMapDataWithOriginsUsingCenter:TRUE];
    NSLog(@"MapViewContoller.mapArrayCount = %d",[[mdm mapArray]count]);
    // create the MapView with the screen size create by MapDataManager
     mapView = [[MapView alloc] initWithFrame:[mdm mapRect]];
    // Create the UIScrollView to have the size of the window, matching the window (screen) size
    UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:[mdm windowRect]];
    [scrollView setBounds:[mdm windowRect]];
    // Tell the scrollview how big it is and set other options
    [scrollView setContentSize:[mdm mapRect].size];
    [scrollView setBounces:NO];
    [scrollView setMinimumZoomScale:.5];
    [scrollView setMaximumZoomScale:10];
    [scrollView setDelegate:self];
    [scrollView setBackgroundColor:[UIColor darkGrayColor]];

    //add the MapView as a subview of the scrollView
    [scrollView addSubview:mapView];
    //add the scrollView to the current one....
    [[self view] addSubview:scrollView];
    [[NSBundle mainBundle] loadNibNamed:@"MapViewController" owner:self options:nil];

    [self generNewMap];
}

我还做错了什么吗?在看了更多之后，这似乎是可行的。

Answer 1

你应该像这样设置层次结构。

ui

• UIScrollView
• 静态按钮等

然后在界面构建器或代码中，只需将静态按钮等添加到self.view中。

我在代码中做所有的事情所以它看起来像

-(void)viewDidLoad {
    //add scrollview
    appScroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];
    appScroll.pagingEnabled = YES;
    [appScroll setCanCancelContentTouches:NO];
    appScroll.bounds = CGRectMake(0, 0, 320, 480);
    appScroll.contentSize = CGSizeMake(1600, 480);
    [appScroll setScrollEnabled:YES];
    appScroll.bounces = NO;
    appScroll.showsHorizontalScrollIndicator = NO;
    appScroll.showsVerticalScrollIndicator = NO;
    appScroll.clipsToBounds = YES;
    appScroll.delaysContentTouches = YES;
    appScroll.center = (CGPoint){ 160, 240 };
    [appScroll setBackgroundColor:[UIColor darkGrayColor]];
    [self.view addSubview:appScroll];

    //back
    backBut = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"back.png"]];
    backBut.center = (CGPoint){ 40, 430 };
    backBut.transform = CGAffineTransformMakeScale(0.3,0.3);
    [backBut setUserInteractionEnabled: YES];
    [self.view addSubview: backBut];
}

Answer 2

诀窍是在加载XIB时指定所有者。例如:

• 在UIViewController上定义一个IBOutlet

  @property (nonatomic, strong) IBOutlet UIView* myScrollViewContent

• 创建一个XIB，指定所有者作为你的UIViewController类

• 将XIB中定义的组件连接到UIViewController类中定义的出口

然后在代码中这样做:

//Because the owner is 'self' the bundle loader will inject any properties defined . . 
//. . . . and wired in the XIB to the owner's outlets
[[NSBundle mainBundle] loadNibNamed:@"MyXibName" owner:self options:nil];
//Now do something with self.myScrollViewContent - ie add it to the scroll view. 

自定义滚动视图子类

如果你想，应该能够使用相同的方法，通过创建一个自定义的滚动视图子类，并指定一个出口…UIView会被直接加载到子类上，然后…(您仍然需要将其添加为子视图)。

对于更复杂的需求，我个人喜欢用纯代码构建我的视图，但是用xib整齐地安排事情也是可能的。