Ios6 将子视图添加到自定义视图时出现问题

我试图创建一个页面滚动视图，显示下一个和上一个图像

我创建了一个自定义UIView类，并将UIScrollView添加为子视图。我有两个问题

我希望视图与IB一起工作，因此我实现了initWithCoder，并在调用超类initWithCoder之后尝试将帧传递给我的init。但帧的宽度和高度始终为0

为了解决这个问题，我在initView方法中使用了屏幕宽度。但是我的scrollview（或者更确切地说是其中的图像）没有显示。我改变了自定义视图（红色）和滚动视图（蓝色）的背景色，我看到的只是红色背景。我已经检查了scrollview的frame rect，它看起来很合理（59，0，201，135），所以我不确定为什么不能显示scrollview 如有任何想法，将不胜感激

模式选择View.m

#import "ModeSelectView.h"

@implementation ModeSelectView


- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        [self initView:frame];
    }
    return self;
}

- (id)initWithCoder:(NSCoder *)aDecoder
{
    self = [super initWithCoder:(aDecoder)];
    if (self) {
        CGRect frame = self.frame;
        [self initView:self.frame];
    }
    return self;
}

- (void)initView:(CGRect)frame
{
    // Initialization code
    // Create an array of images for the different modes
    UIImage *imgTowerOnlyMode = [UIImage imageNamed:@"tower_only_mode_icon.png"];
    UIImage *imgLocalMode = [UIImage imageNamed:@"local_mode_icon.png"];
    UIImage *imgHowToPlay = [UIImage imageNamed:@"how_to_play_icon.png"];
    NSArray *modeSelectIcons = @[imgTowerOnlyMode, imgLocalMode, imgHowToPlay];

    int iconSize = 115;
    // Center to center icon spacing
    int viewSpacing = 115 * 1.75;
    int frameWidth = 2*viewSpacing;
    int contentWidth = 4*frameWidth;
    int pageWidth = viewSpacing;
    int verticalPadding = 10;
    int pageHeight = iconSize + 2*verticalPadding;
        //int viewWidth = frame.size.width;
    int viewWidth = [[UIScreen mainScreen] applicationFrame].size.width;
    int scrollViewX = (viewWidth - pageWidth)/2;

    // Create the scrollview, setting it to be page size in width the icon height plus padding
    CGRect scrollViewFrame = CGRectMake(scrollViewX, 0, pageWidth, pageHeight);
    self.scrollModeSelect = [[UIScrollView alloc] initWithFrame:scrollViewFrame];

    // Now iterate over the array creating a view for each
    // The first view will be offset in X to allow it to be
    // centered in the page
    int imageOffset = (frameWidth-iconSize)/2;
    for (int i = 0; i < [modeSelectIcons count]; ++i) {
        // Get the origin x value for the image view within the scroll view
        int viewOriginX = i*frameWidth + imageOffset;

        // Initialize the image view
        UIImageView *ivModeSelect = [[UIImageView alloc]
        initWithFrame:CGRectMake(viewOriginX , verticalPadding/2,
                                 iconSize, iconSize)];

        // Set the image
        ivModeSelect.image = (UIImage *)modeSelectIcons[i];

        // Tell the parent view to scale the iamge, preserving aspect ratio, to
        // fit the parent view.
        ivModeSelect.contentMode = UIViewContentModeScaleAspectFit;

        // Add the image view to the scroll view
        [self.scrollModeSelect addSubview:ivModeSelect];
    }

    [self.scrollModeSelect setContentSize:CGSizeMake(contentWidth, pageHeight)];
    // Turn off clipping so we can see the adjacent icons
    [self.scrollModeSelect setClipsToBounds:FALSE];

    // Add the scrollview as a subview
    [self addSubview:self.scrollModeSelect];

    [self.scrollModeSelect setBackgroundColor:[UIColor blueColor]];
    [self setBackgroundColor:[UIColor redColor]];
}


/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
    // Drawing code
}
*/

@end

#导入“ModeSelectView.h”
@实现模式选择视图
-（id）initWithFrame:（CGRect）帧
{
self=[super initWithFrame:frame]；
如果（自我）{
[自初始化视图：帧]；
}
回归自我；
}
-（id）initWithCoder:（NSCoder*）aDecoder
{
self=[super initWithCoder:（aDecoder）]；
如果（自我）{
CGRect frame=self.frame；
[self initView:self.frame]；
}
回归自我；
}
-（void）initView：（CGRect）帧
{
//初始化代码
//为不同模式创建图像数组
UIImage*imgTowerOnlyMode=[UIImage ImageName:@“仅塔模式图标.png”]；
UIImage*imgLocalMode=[UIImage ImageName:@“local_mode_icon.png”]；
UIImage*imgHowToPlay=[UIImage ImageName:@“如何播放图标.png”]；
NSArray*modeSelectIcons=@[imgTowerOnlyMode、imgLocalMode、imgHowToPlay]；
int iconSize=115；
//中心到中心图标间距
内部视图间距=115*1.75；
int frameWidth=2*视图间距；
int contentWidth=4*frameWidth；
int pageWidth=视图间距；
int垂直填充=10；
int pageHeight=iconSize+2*垂直填充；
//int viewWidth=frame.size.width；
int viewWidth=[[UIScreen mainScreen]applicationFrame].size.width；
int scrollViewX=（viewWidth-pageWidth）/2；
//创建滚动视图，将其设置为页面宽度大小图标高度加上填充
CGRect scrollViewFrame=CGRectMake（scrollViewX，0，pageWidth，pageHeight）；
self.scrollModeSelect=[[UIScrollView alloc]initWithFrame:scrollViewFrame]；
//现在迭代数组，为每个数组创建一个视图
//第一个视图将在X轴上偏移，以允许
//居中
int imageOffset=（帧宽度图标大小）/2；
对于（int i=0；i<[modeSelectIcons count]；++i）{
//获取滚动视图中图像视图的原点x值
int viewOriginX=i*帧宽+图像偏移；
//初始化图像视图
UIImageView*ivModeSelect=[[UIImageView alloc]
initWithFrame:CGRectMake（viewOriginX，垂直填充/2，
i consize，i consize）]；
//设置图像
ivModeSelect.image=（UIImage*）modeSelectIcons[i]；
//告诉父视图将iamge缩放，保持纵横比为
//适合父视图。
ivModeSelect.contentMode=UIViewContentModeScaleAspectFit；
//将图像视图添加到滚动视图中
[self.scrollModeSelect addSubview:ivModeSelect]；
}
[self.scrollModeSelect setContentSize:CGSizeMake（contentWidth，pageHeight）]；
//关闭剪辑，以便我们可以看到相邻的图标
[self.scrollModeSelect setclipstobunds:FALSE]；
//将滚动视图添加为子视图
[self addSubview:self.scrollModeSelect]；
[self.scrollModeSelect setBackgroundColor:[UIColor blueColor]]；
[self-setBackgroundColor:[UIColor redColor]；
}
/*
//仅覆盖drawRect：如果执行自定义绘图。
//空实现会对动画期间的性能产生不利影响。
-（void）drawRect:（CGRect）rect
{
//绘图代码
}
*/
@结束

事实证明，由于应用程序框架尚未确定，因此无法在initWith方法中进行任何视图大小调整。因此，要做到这一点，您需要在视图层次结构中使用默认大小设置视图。然后，您需要覆盖LayoutSubView来进行大小调整。在布局子视图中，可以使用self.frame访问图幅。下面是与上面相同的代码，但是使用了LayoutSubview

- (void)initView:(CGRect)frame
{
    // Initialization code
    self.ivModeSelectArray = [[NSMutableArray alloc] init];

    // Create an array of images for the different modes
    UIImage *imgTowerOnlyMode = [UIImage imageNamed:@"tower_only_mode_icon.png"];
    UIImage *imgLocalMode = [UIImage imageNamed:@"local_mode_icon.png"];
    UIImage *imgHowToPlay = [UIImage imageNamed:@"how_to_play_icon.png"];
    NSArray *modeSelectIcons = @[imgTowerOnlyMode, imgLocalMode, imgHowToPlay];

    // Create the scrollview, initially setting it to 0 size.  We'll resize it
    // in layoutSubviews
    CGRect scrollViewFrame = CGRectMake(0,0,200,110);
    self.scrollModeSelect = [[UIScrollView alloc] initWithFrame:scrollViewFrame];

    // Now iterate over the array creating a view for each, intially set to 0
    // size.  We'll resize them and reposition them in layoutSubviews
    for (int i = 0; i < [modeSelectIcons count]; ++i) {
        UIImageView *ivModeSelect =
                 [self addModeIcon:[modeSelectIcons objectAtIndex:i]];

        // Add the image view to the scroll view
        [self.scrollModeSelect addSubview:ivModeSelect];
    }

    // Turn off clipping so we can see the adjacent icons
    [self.scrollModeSelect setClipsToBounds:FALSE];

    // Turn on paging
    [self.scrollModeSelect setPagingEnabled:TRUE];

    // Add the scrollview as a subview
    [self addSubview:self.scrollModeSelect];

//    self.scrollModeSelect.backgroundColor = [UIColor blueColor];
//    self.backgroundColor = [UIColor redColor];
}

- (void)layoutSubviews
{
    int iconSize = 115;
    // Center to center icon spacing
    CGFloat viewSpacing = 115 * 1.4;
    int frameWidth = viewSpacing;
    int contentWidth = 4*frameWidth;
    int pageWidth = viewSpacing;
    int verticalPadding = 10;
    int pageHeight = iconSize + 2*verticalPadding;
    int viewWidth = self.frame.size.width;
    int scrollViewX = (viewWidth - frameWidth)/2;

    // Now iterate over the array configuring the size and offset for each view
    // The first view will be offset in X to allow it to be centered in the page
    int imageOffset = (frameWidth-iconSize)/2;
    for (int i = 0; i < [self.ivModeSelectArray count]; ++i) {
        // Get the origin x value for the image view within the scroll view
        int viewOriginX = i*viewSpacing + imageOffset;

        // Size the image view
        UIImageView *ivModeSelect = [self.ivModeSelectArray objectAtIndex:i];
        [ivModeSelect setFrame:CGRectMake(viewOriginX , verticalPadding/2,
                                          iconSize, iconSize)];

    }

    [self.scrollModeSelect setFrame:CGRectMake(scrollViewX, 0,
                                               pageWidth,pageHeight)];
    [self.scrollModeSelect setContentSize:CGSizeMake(contentWidth, pageHeight)];
}

-（void）initView:（CGRect）帧
{
//初始化代码
self.ivModeSelectArray=[[NSMutableArray alloc]init]；
//为不同模式创建图像数组
UIImage*imgTowerOnlyMode=[UIImage ImageName:@“仅塔模式图标.png”]；
UIImage*imgLocalMode=[UIImage ImageName:@“local_mode_icon.png”]；
UIImage*imgHowToPlay=[UIImage ImageName:@“如何播放图标.png”]；
NSArray*modeSelectIcons=@[imgTowerOnlyMode、imgLocalMode、imgHowToPlay]；
//创建滚动视图，最初将其设置为0大小。我们将调整其大小
//在布局子视图中
CGRect scrollViewFrame=CGRectMake（0,0200110）；
self.scrollModeSelect=[[UIScrollView alloc]initWithFrame:scrollViewFrame]；
//现在迭代数组，为每个数组创建一个视图，初始设置为0
//大小。我们将调整它们的大小并在布局子视图中重新定位它们
对于（int i=0；i<[modeSelectIcons count]；++i）{
UIImageView*ivModeSelect=
[自添加模式图标：[模式选择图标对象索引：i]]；
//将图像视图添加到滚动视图中
[self.scrollModeSelect addSubview:ivModeSelect]；
}
//关闭剪辑，以便我们可以看到相邻的图标
[self.scrollModeSelect setclipstobunds:FALSE]；
//打开分页
[self.scrollModeSelect setPaginEnabled:TRUE]；
//将滚动视图添加为子视图
[self addSubview:self.scrollModeSelect]；
//self.scrollModeSelect.backgroundColor=[UIColor blueColor]；
//自我背景