Question

我在我的应用的Custom View内实现了一个ViewController，我用不同的参数调用了两次，但这里有一个奇怪的行为。

正如您在图片中看到的，views是一组UILabel和2 UIImageView s，两个Custom View都是等于的，实际上是相同的代码创建这两个视图。

enter image description here

我使用颜色知道每个Label的位置并查看background。灰色和橙色是2 backgrounds。第一个视图就可以了，但第二个属性在真实视图之外（灰色视图）。任何人都知道像我这样实例化视图是否有任何问题？还有更好的办法吗？

我已使用此代码在views中实例化此ViewController：

- (void)viewDidLoad
{
    [super viewDidLoad];

    [self.view addSubview:self.sherpaViewDescubridor];

    [self.view addSubview:self.sherpaViewConquistador];
}
#pragma mark - Custom Getters 

-(WPSherpaView *)sherpaViewDescubridor
{
    if(!sherpaViewDescubridor){
        CGRect sherpaFrame = CGRectMake(10, 0, 320, 125);

        sherpaViewDescubridor = [[WPSherpaView alloc] initWithFrame:sherpaFrame];
        return sherpaViewDescubridor;
    }
    return sherpaViewDescubridor;
}


-(WPSherpaView *)sherpaViewConquistador
{
    if(!sherpaViewConquistador){
        CGRect sherpaFrame = self.sherpaViewDescubridor.frame;
        sherpaFrame.origin.y = CGRectGetMaxY(sherpaFrame) + 5;
        sherpaViewConquistador = [[WPSherpaView alloc] initWithFrame:sherpaFrame];
        sherpaViewConquistador.backgroundColor = [UIColor grayColor];
        return sherpaViewConquistador;
    }
    return sherpaViewConquistador;
}

这是自定义视图代码：

@implementation WPSherpaView
@synthesize aliasLbl, nameLbl ,pointsLbl,positionLbl,profileImg,flagImg, viewNameLbl, warCryLbl;

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        CGRect firstLabelFrame = {
            .origin.x = kMarginLeft,
            .origin.y =  self.frame.origin.y + 10.0 ,
            .size.width = self.frame.size.width - (2*kMarginLeft),
            .size.height = kNameViewHeight,
        };


        viewNameLbl = [[WPCustomLabel alloc] initWithFrame:firstLabelFrame];
        [viewNameLbl setFont:[UIFont systemFontOfSize:KMediumFontSize]];
        [viewNameLbl setBackgroundColor:[UIColor redColor]];
        viewNameLbl.textAlignment = NSTextAlignmentLeft;
        [self addSubview:viewNameLbl];


        CGRect centreViewFrame = firstLabelFrame;
        centreViewFrame.origin.y = CGRectGetMaxY(firstLabelFrame) + 10.0;

        UIView *centerView  = [[UIView alloc] initWithFrame:centreViewFrame];
        centerView.backgroundColor = [UIColor greenColor];

        [self addSubview:centerView];


        // LEFT IMAGES

        CGRect imageProfileFrame = {
            .origin.x = 0,
            .origin.y =  0 ,
            .size.width = kImageSize,
            .size.height = kImageSize,
        };


        profileImg = [[UIImageView alloc] initWithFrame:imageProfileFrame];
        profileImg.backgroundColor = [UIColor blueColor];
        [centerView addSubview:profileImg];

        imageProfileFrame.origin.x = CGRectGetMaxX(imageProfileFrame)+ kMarginLeft;
        flagImg = [[UIImageView alloc] initWithFrame:imageProfileFrame];
        flagImg.backgroundColor = [UIColor orangeColor];
        [centerView addSubview:flagImg];


        // RIGHT LABELS

        CGRect labelFrame = imageProfileFrame;
        labelFrame.origin.x = CGRectGetMaxX(imageProfileFrame) + (2 * kMarginLeft);
        labelFrame.size = kSizelabel;


        aliasLbl = [[WPCustomLabel alloc] initWithFrame:labelFrame];
        [aliasLbl setFont:[UIFont systemFontOfSize:KMediumFontSize]];
        [aliasLbl setBackgroundColor:[UIColor blackColor]];
        aliasLbl.textAlignment = NSTextAlignmentLeft;
        [centerView addSubview:aliasLbl];


        labelFrame.origin.y += kSizelabel.height;
        labelFrame.size.height = 15.0;
        nameLbl = [[WPCustomLabel alloc] initWithFrame:labelFrame];
        [nameLbl setFont:[UIFont systemFontOfSize:KMinFontSize]];
        [nameLbl setBackgroundColor:[UIColor grayColor]];
        nameLbl.textAlignment = NSTextAlignmentLeft;
        [centerView addSubview:nameLbl];


        labelFrame.origin.y += kSizelabel.height;
        positionLbl = [[WPCustomLabel alloc] initWithFrame:labelFrame];
        [positionLbl setFont:[UIFont systemFontOfSize:13]];
        [positionLbl setBackgroundColor:[UIColor orangeColor]];
        positionLbl.textAlignment = NSTextAlignmentLeft;
        [centerView addSubview:positionLbl];


        labelFrame.origin.y += kSizelabel.height;
        warCryLbl = [[WPCustomLabel alloc] initWithFrame:labelFrame];
        [warCryLbl setFont:[UIFont systemFontOfSize:13]];
        [warCryLbl setBackgroundColor:[UIColor blackColor]];
        warCryLbl.textAlignment = NSTextAlignmentLeft;
        [centerView addSubview:warCryLbl];


        centreViewFrame.size.height = CGRectGetMaxY(labelFrame) + 5 ;
        centerView.frame = centreViewFrame;

        // BORDER VIEW

        CGRect bordeFrame = self.frame;
        bordeFrame.size.height = 0.5;
        bordeFrame.origin.y = self.frame.size.height - 0.5;
        bordeFrame.origin.x = kMarginLeft;

        UIView *bottomBorder = [[UIView alloc] initWithFrame:bordeFrame];
        bottomBorder.backgroundColor = [UIColor grayColor];
        [self addSubview:bottomBorder];

    }
    return self;
}

谢谢

Answer 1

试试这个

CGRect firstLabelFrame = {
    .origin.x = kMarginLeft,
    .origin.y =  self.bounds.origin.y + 10.0 , // <----
    .size.width = self.bounds.size.width - (2*kMarginLeft), // <-----
    .size.height = kNameViewHeight,
};

Answer 2

当您将视图置于超级视图中时，您可能会混淆frame和bounds。 frame是在superview的坐标中表示的边界矩形，bounds是在视图自己的坐标中表示的相同矩形。如果superview恰好位于其 superview的原点，正如您的橙色视图可能是，则没有区别。另一方面，灰色视图的原点取决于橙色视图的高度。当您使用frame找到sherpaView时，sherpaView会被移位相同数量。

如果您想要视图中的坐标和bounds，如果您想要视图的坐标，请使用frame。

我在跟踪您的代码时遇到了一些麻烦，但我认为如果您更改此代码：

CGRect sherpaFrame = self.sherpaViewDescubridor.frame;

到此：

CGRect sherpaFrame = self.sherpaViewDescubridor.bounds;

你可能会得到你想要的结果。

自定义UIViews的奇怪行为

2 个答案: