从单个方法实例化一定数量的唯一对象

发布于 2024-09-30 12:34:02 字数 1563 浏览 1 评论 0原文

这是我一直无法理解的事情……

假设我正在构建一个由 8 个 UIView 宽、8 个 UIView 高组成的网格。它可以由任意 x, y 集合组成。它不一定是 8 x 8。让我们任意选择并暂时坚持这一点。

这个 init 方法（UIView 子类的一部分）生成 8 行 UIViews 宽：

    - (id)initWithFrame:(CGRect)frame {

if ((self = [super initWithFrame:frame])) {

    int x = 1;
    int y = 1;

    //row 01
    UIView* row01Square01 = [[UIView alloc] initWithFrame:CGRectMake((0*x), (0*y), x, y)];
    [self addSubview:row01Square01];

    UIView* row01Square02 = [[UIView alloc] initWithFrame:CGRectMake((1*x), (0*y), x, y)];
    [self addSubview:row01Square02];

    UIView* row01Square03 = [[UIView alloc] initWithFrame:CGRectMake((2*x), (0*y), x, y)];
    [self addSubview:row01Square03];

    UIView* row01Square04 = [[UIView alloc] initWithFrame:CGRectMake((3*x), (0*y), x, y)];
    [self addSubview:row01Square04];

    UIView* row01Square05 = [[UIView alloc] initWithFrame:CGRectMake((4*x), (0*y), x, y)];
    [self addSubview:row01Square05];

    UIView* row01Square06 = [[UIView alloc] initWithFrame:CGRectMake((5*x), (0*y), x, y)];
    [self addSubview:row01Square06];

    UIView* row01Square07 = [[UIView alloc] initWithFrame:CGRectMake((6*x), (0*y), x, y)];
    [self addSubview:row01Square07];

    UIView* row01Square08 = [[UIView alloc] initWithFrame:CGRectMake((7*x), (0*y), x, y)];
    [self addSubview:row01Square08];
}

return self;

}

是否可以编写一个可以使用该代码（当然需要修改）的方法来生成后续 7 行 UIViews？更好的是，是否可以使用 1 行代码来生成所有 64 个 UI 视图？

我尝试过使用 for、while、do 循环，但我承认，当谈到是否可以将字符串作为参数传递给 init 方法时，我完全迷失了。

预先感谢您对此的任何见解。

原文

This is something I've just never been able to get my brain around...

Let's say I am building a grid of 8 UIViews wide by 8 UIViews high. It could by any x, y set. It doesn't have to be 8 x 8. Let's just be arbitrary and stick to that for now.

This init method (part of a subclass of UIView) generates a row 8 UIViews wide:

    - (id)initWithFrame:(CGRect)frame {

if ((self = [super initWithFrame:frame])) {

    int x = 1;
    int y = 1;

    //row 01
    UIView* row01Square01 = [[UIView alloc] initWithFrame:CGRectMake((0*x), (0*y), x, y)];
    [self addSubview:row01Square01];

    UIView* row01Square02 = [[UIView alloc] initWithFrame:CGRectMake((1*x), (0*y), x, y)];
    [self addSubview:row01Square02];

    UIView* row01Square03 = [[UIView alloc] initWithFrame:CGRectMake((2*x), (0*y), x, y)];
    [self addSubview:row01Square03];

    UIView* row01Square04 = [[UIView alloc] initWithFrame:CGRectMake((3*x), (0*y), x, y)];
    [self addSubview:row01Square04];

    UIView* row01Square05 = [[UIView alloc] initWithFrame:CGRectMake((4*x), (0*y), x, y)];
    [self addSubview:row01Square05];

    UIView* row01Square06 = [[UIView alloc] initWithFrame:CGRectMake((5*x), (0*y), x, y)];
    [self addSubview:row01Square06];

    UIView* row01Square07 = [[UIView alloc] initWithFrame:CGRectMake((6*x), (0*y), x, y)];
    [self addSubview:row01Square07];

    UIView* row01Square08 = [[UIView alloc] initWithFrame:CGRectMake((7*x), (0*y), x, y)];
    [self addSubview:row01Square08];
}

return self;

}

Is it possible to write a method that could use that code (with modifications of course) to generate the subsequent 7 rows of UIViews? Better yet, is it possible to use 1 line of to generate all 64 UI Views?

I have experimented with using a for, while, do loop, but I admit I am completely lost when it comes to whether you or not you can pass a string as an argument to an init method.

Thanks in advance for any insight into this.

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

昔梦 2024-10-07 12:34:02

您的意思是：

for (int i=0;i<8;i++) {
    UIView* square = [[UIView alloc] initWithFrame:CGRectMake((i*x), (0*y), x, y)];
    [self addSubview:square];
    }

还是（对于所有行）：

for(int r=0;r<8;r++) {
    for (int i=0;i<8;i++) {
        UIView* square = [[UIView alloc] initWithFrame:CGRectMake((i*x), (r*y), x, y)];
        [self addSubview:square];
        }
    }

Do you mean:

for (int i=0;i<8;i++) {
    UIView* square = [[UIView alloc] initWithFrame:CGRectMake((i*x), (0*y), x, y)];
    [self addSubview:square];
    }

Or (for all the rows):

for(int r=0;r<8;r++) {
    for (int i=0;i<8;i++) {
        UIView* square = [[UIView alloc] initWithFrame:CGRectMake((i*x), (r*y), x, y)];
        [self addSubview:square];
        }
    }

回复收藏 0 原文

一念一轮回 2024-10-07 12:34:02

int numberOfRows = 8;
int numberOfColumns = 8;

for (int j = 0; j<numberOfRows;j++){
    for (int i=0;i<numberOfColumns;i++) {
        UIView* square = [[UIView alloc] initWithFrame:CGRectMake((i*x), (j*y), x, y)];
        [self addSubview:square];
    }
}

int numberOfRows = 8;
int numberOfColumns = 8;

for (int j = 0; j<numberOfRows;j++){
    for (int i=0;i<numberOfColumns;i++) {
        UIView* square = [[UIView alloc] initWithFrame:CGRectMake((i*x), (j*y), x, y)];
        [self addSubview:square];
    }
}

回复收藏 0 原文

~没有更多了~