ios - 界面类似于带有 UIScrollView 的 Snapchat

Question

我正在尝试让相机显示在 ScrollView 上，就像 snapchat 的滑动导航一样。我尝试像下面那样设置它，我创建了一个要显示的对象数组，相机是其中之一，然后将其设置为我的滚动条的 subview 。此代码没有错误，但屏幕上没有显示任何内容。谁能帮我看看我可能做错了什么。我认为这可能是添加 subview 。我应该改用页面 View 吗？有没有人尝试制作类似于 snapchat 的用户界面并可以提供一些链接？谢谢

//Set Up the Camera View
    [[self captureManager] addVideoInput];

    [[self captureManager] addVideoPreviewLayer];
    CGRect layerRect = [[[self view] layer] bounds];
    [[[self captureManager] previewLayer] setBounds:layerRect];
    [[[self captureManager] previewLayer] setPosition:CGPointMake(CGRectGetMidX(layerRect),
                                                                  CGRectGetMidY(layerRect))];
    UIView *captureView = [[UIView alloc] initWithFrame:self.view.bounds];
    [[captureView layer] addSublayer:[[self captureManager] previewLayer]];

    [[captureManager captureSession] startRunning];


    int PageCount = 2;
    NSMutableArray *arrImageName =[[NSMutableArray alloc]initWithObjects:settingsView,captureView,nil];
    UIScrollView *scroller = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];
    scroller.scrollEnabled=YES;
    scroller.backgroundColor = [UIColor clearColor];
    [scroller setShowsHorizontalScrollIndicator:NO];
    scroller.pagingEnabled = YES;
    scroller.bounces = NO;
    scroller.delegate = self;
    [self.view addSubview:scroller];
    int width=scroller.frame.size.width;
    int xPos=0;
    for (int i=0; i<PageCount; i++)
    {
        UIView *view1 = [[UIView alloc]initWithFrame:CGRectMake(xPos, 0, scroller.frame.size.width, scroller.frame.size.height)];
        UIView *view2 = [arrImageName objectAtIndex:i];
        [view1 addSubview:view2];
        [scroller addSubview:view1];
        scroller.contentSize = CGSizeMake(width, 0);
        width +=scroller.frame.size.width;
        xPos  +=scroller.frame.size.width;
    }

Answer 1

以此为例，说明如何在页面 Controller 中创建多个页面:

https://developer.apple.com/library/ios/samplecode/PhotoScroller/Introduction/Intro.html#//apple_ref/doc/uid/DTS40010080