英文:
Is there a way in Flutter dropdown_button2 version < 2.0.0 to customize the button and the dropdown separately?
问题
在Flutter中，对于dropdown_button2版本小于2.0.0，我想分别自定义按钮和下拉菜单。具体来说，我想给按钮一个固定宽度，同时让下拉菜单的宽度根据下拉菜单中最长项的文本来自动调整。请注意，我正在使用版本1.7.0。
我查看了版本2.0.0，但它与之前版本不同。我们无法使用它。我们需要继续使用版本1.7.0。
英文:
In Flutter dropdown_button2 version < 2.0.0, I want to customize the button and the dropdown separately. Specifically, I want to give the button a fixed width, while letting the dropdown width expand and shrink to fit the text of the longest item in the dropdown. Please note that I'm using version 1.7.0
I looked at version 2.0.0 and it's different. We can't use it. We need to keep using version 1.7.0.
答案1
得分: 0
我通过根据下拉框中最长文本的动态计算宽度来解决了这个问题。类似于以下代码：
dropdownWidth: longestItemWidth > minItemWidth
? longestItemWidth
: minItemWidth
我通过将所有项目的长度提取到一个数组中并对其进行排序来计算longestItemWidth，然后我选择数组中的最后一个项目，这将是最长的项目。
英文:
I solved the problem by dynamically calculating the width of the drop down depending on the longest text in the drop down. Somethng like:
dropdownWidth: longestItemWidth > minItemWidth
? longestItemWidth
: minItemWidth
I calculated the longestItemWidth by exracting the length of all items into an array and sortig it. Then I picked the last item in the array which will be the longest.
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