我如何使用“真实图像”制作一个可点击的按钮？
我已经几天没有找到这样的问题了，所以我想我会把它发布在这里......
所以假设我有一张雪花的图片，我通常会拖入一个 uibutton 并设置为自定义并添加图像，但是我不希望这样，因为它会在图像周围形成方形边框，并且我希望按钮本身就是图像。
因此图像的边框将是按钮的最外层部分，仅此而已。
我将如何继续这样做？
I have not found an question like this in a few days so I thought I would post it here...
So say I have a picture of a snowflake, I would usually drag in a uibutton and set to custom and add the image in but I do not want that because it will make a square border around the image and I want the button itself to be the image.
So the border of the image would be the outermost part of the button and nothing more.
How would I go upon doing this?
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假设图像具有透明背景，可以显示雪花不存在的地方...
您可以将其添加为 UIImageView，将其注册为“内部触摸”操作，然后根据图像检查触摸的 X/Y 坐标图像的 X/Y 坐标。如果它们位于透明位上，则这不是“按钮按下”，但如果有数据，则这是有效的按钮按下。
有几个“颜色选择器”测试代码应用程序可以做类似的事情。您应该能够使用他们的代码作为起点。
Assuming the image has a transparent background which shows through where the snowflake isn't...
You could add it as UIImageView, register it for "touch up inside" actions, then check the X/Y coordinates of the touch up against the the those X/Y coordinates of the image. If they are on a transparent bit, then it's not a "button press", but if there is data, it was a valid button push.
There are several "color picker" test code applications out there which do similar things. You should be able to use their code as a starting point.