iphone uiimage 标签 - 可以使用字符串吗？
简单的问题...
我有一系列按钮，每个按钮都有一个标签。我单击根据标签号单独创建 uiimageview 的按钮。所以这个标签号，比如 43 被传递，并使用 43.png 创建一个新的 uiimageview
所有这些都运行良好，我可以通过单击它们来删除创建的图像...
..但是...我现在想知道如何我可以一次性删除所有这些创建的图像。所以我说 4 个图像都是通过单击按钮创建的。
我的问题是：我可以使用字符串来识别这些“创建的”图像吗？我考虑过为他们使用一个以 99 开头的标签吗？所以 991、992、993 等等，但这似乎不是一个好的编码。过去，实际上在 Flash 中，我使用了 item1、item2 标签...然后在代码中，我只需循环遍历屏幕上以“item”开头的所有标签并将其删除。
关于解决这个问题的最佳方法有什么想法吗？
谢谢
quick question...
I have a series of buttons, each with a tag. I click the buttons which individually create a uiimageview based on the tag number. So this tag number, say 43 is passed and a new uiimageview is created using 43.png
All this is working nicely and I can remove the created images by clicking on them...
..but... I'm now wondering how I can remove all these created images all at once. So I have say 4 images which were all created as a result of clicking the buttons.
my question is this: can I use a string to identify these "created" images some how? I thought about using a tag for them starting with 99 maybe? so 991, 992, 993 etc. but this doesn't seem like good coding. In the past, and indeed in Flash, I used a tag of item1, item2... then in the code, I simply loop through ALL tags on the screen starting with "item" and remove them.
any ideas on the best way to tackle this??
Thanks
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您可以简单地将对所有创建的图像的引用存储为数组中的元素，并将其作为 viewController 的属性保存。
或者，这种问题可以用子类来处理。您可以使用某种标识符属性创建 UIImage 的子类，然后使用它来删除它们。
You could simply store a reference to all the created images as elements in an array kept as an attribute of the viewController.
Alternatively, this is the sort of problem that can be handled with a subclass. You can just create a subclass of UIImage with some sort of identifier attribute and use that to remove them.
似乎您可以循环遍历
subviews数组，查看每个视图的tag属性，将每个属性转换为字符串，然后使用NSStringstartsWith: 删除那些与您的模式匹配的内容。但我认为保留自己创建的图像列表并在需要时删除它们会更容易。
Seems like you could just loop through the
subviewsarray, look at thetagproperty of each one, convert each to a string, and useNSString startsWith:to remove those that match your pattern.But I think it would be easier to just keep your own list of created images, and delete them when desired.