如何将 Android ViewPager2 的高度包装到当前项目的高度? [英] How to wrap height of Android ViewPager2 to height of current item?

问题描述

这个问题是针对新的 ViewPager2 类的.

This question is for the new ViewPager2 class.

有一个 旧 ViewPager 的类似问题，但解决方案需要扩展 ViewPager.但是，ViewPager2 是最终版本，因此无法扩展.

There is a similar question for the old ViewPager, but the solution requires extending ViewPager. However, ViewPager2 is final so cannot be extended.

在我的情况下，我有一个包含三个不同片段的 ViewPager2.其中一个片段比其他两个片段高得多，这意味着当您滑动到其中一个较短的片段时，会有很多空白空间.那么如何有效地将 ViewPager2 包裹到当前 Fragment 的高度呢?

In my situation, I have a ViewPager2 that contains three different fragments. One of these fragments is much taller than the other two, which means when you swipe to one of the shorter fragments, there is a lot of empty space. So how do I effectively wrap the ViewPager2 to the height of the current fragment?

推荐答案

解决方案是在 ViewPager2 的每个片段中添加以下内容:

The solution is to add the following in each fragment that is part of the ViewPager2:

override fun onResume() {
   super.onResume()
   binding.root.requestLayout()
}

binding.root 来自 ViewBinding/DataBinding 但它是布局的主要容器，即 ConstraintLayout、LinearLayout 等.

binding.root is from ViewBinding/DataBinding but it's is the main container of your layout, i.e. ConstraintLayout, LinearLayout, etc.

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