Using FlexLayouManager in PopupWindow, RecyclerView height is wrap_content Error

[xie99]

• [ ] I have searched existing issues and confirmed this is not a duplicate

Version of the flexbox library

*1.1.0

java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getWidth()' on a null object reference at com.google.android.flexbox.FlexboxLayoutManager.canScrollHorizontally(FlexboxLayoutManager.java:1898) at com.google.android.flexbox.FlexboxLayoutManager.getChildWidthMeasureSpec(FlexboxLayoutManager.java:485) at com.google.android.flexbox.FlexboxHelper.calculateFlexLines(FlexboxHelper.java:459) at com.google.android.flexbox.FlexboxHelper.calculateHorizontalFlexLines(FlexboxHelper.java:244) at com.google.android.flexbox.FlexboxLayoutManager.updateFlexLines(FlexboxLayoutManager.java:953) at com.google.android.flexbox.FlexboxLayoutManager.onLayoutChildren(FlexboxLayoutManager.java:729) at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3924) at androidx.recyclerview.widget.RecyclerView.onMeasure(RecyclerView.java:3336) at android.view.View.measure(View.java:22071) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6602) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1514) at android.widget.LinearLayout.measureVertical(LinearLayout.java:806) at android.widget.LinearLayout.onMeasure(LinearLayout.java:685) at android.view.View.measure(View.java:22071) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6602) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1514) at android.widget.LinearLayout.measureVertical(LinearLayout.java:806) at android.widget.LinearLayout.onMeasure(LinearLayout.java:685) at android.view.View.measure(View.java:22071)

[sheckspir]

Looks like it fixed for library v2.0.1