在视图之间传递 IndexPath

发布于 2024-12-06 20:56:47 字数 469 浏览 3 评论 0原文

我试图将子视图的索引路径传递到主视图。我是通过我已经设置的委托和协议来执行此操作的，我只是稍微编辑了我调用的接受索引路径的方法..所以一切似乎都正常工作，但是当我从两个视图执行 NSLog 时，我得到下面的输出在我的终端中..我想知道“0x4e1fdc0”在输出中代表什么剂量？那是一个内存指针还是什么？

现在我在主视图中已经选择了索引路径，如果用户决定返回子视图，我如何将其传递回子视图？我是否需要制定新的委托/协议来转发信息？或者我可以用另一种方式来做吗..

2011-09-28 15:02:13.672 Code[14139:207] First View <NSIndexPath 0x4e1fdc0> 2 indexes [0, 0]
2011-09-28 15:02:13.673 Code[14139:207] Second View <NSIndexPath 0x4e1fdc0> 2 indexes [0, 0]

原文

I am trying to pass the indexpath of my subview over to my main view. I am doing this through delegates and protocols that I have alread set up, I have just slightly edited the method I call to accept the indexpath.. so everything seems to work correctly however when I do the NSLog from both views I get the output below in my terminal.. I would like to know what dose the "0x4e1fdc0" represent in the output? is that a memory pointer or something?

Also now that I have the selected indexpath in my mainview, if the user decides to go back to the subview how can i pass it back to the subview? do I need to make a new delegate/protocol to pass the information forward? or can I do it another way..

2011-09-28 15:02:13.672 Code[14139:207] First View <NSIndexPath 0x4e1fdc0> 2 indexes [0, 0]
2011-09-28 15:02:13.673 Code[14139:207] Second View <NSIndexPath 0x4e1fdc0> 2 indexes [0, 0]

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等风也等你 2024-12-13 20:56:47

是的，这就是内存指针，NSIndexPath 只是嵌套数组集合树中节点的路径，因此 0, 0 表示数组 1 中的位置 0，然后是数组 2 中的位置 0。

NSIndexPath参考

您可以使用依赖注入将其传递给子视图，所以基本上只需在你的子视图：

"MyFile.h"
@property (nonatomic, retain) NSIndexPath *myPath;

"MyFile.m"

@synthesize myPath;

"MainView.m"
// After allocating the subview, or whenever you are going to show the subView
[mySubView setIndexPath:myPath];

Yes that is the memory pointer, a NSIndexPath is just a path to a node in a tree of nested array collections, so 0, 0, means position 0 in array 1 and then position 0 in array 2.

NSIndexPath reference

You can pass it to the subview using Dependency Injection so basically just declare this on your subview:

"MyFile.h"
@property (nonatomic, retain) NSIndexPath *myPath;

"MyFile.m"

@synthesize myPath;

"MainView.m"
// After allocating the subview, or whenever you are going to show the subView
[mySubView setIndexPath:myPath];

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