jakub jakub - 23 days ago 9
Android Question

View can not be anchored to the parent CoordinatorLayout

I just updated to appcompat library from 23.1.1 to 23.2 and now application stopped working on java.lang.IllegalStateException: View can not be anchored to the the parent CoordinatorLayout.

java.lang.IllegalStateException: View can not be anchored to the the parent CoordinatorLayout


Crash comes from
resolveAnchorView
method of
CoordinatorLayout
when parent (CoordinatorLayout is not in edit mode). Layout is used as root element in base activity and contains different layouts (toolbar, progressbar and finally relativelayout with inflated layout of activity.

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/base_activity__main_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/shared__color_primary">

<ProgressBar
android:id="@+id/base_activity__progress_bar_top"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:indeterminate="true"
android:visibility="gone" />

<ViewSwitcher
android:id="@+id/base_activity__switcher"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/base_activity__progress_bar_top">

<LinearLayout
android:id="@+id/base_activity__progress_bar_layout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:orientation="vertical">

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/_loading"
android:textStyle="italic" />

<ProgressBar
android:id="@+id/base_activity__progress_bar"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:indeterminate="true" />
</LinearLayout>

<RelativeLayout
android:id="@+id/base_activity__main_content_layout"
android:layout_width="match_parent"
android:layout_height="match_parent" />

</ViewSwitcher>

<RelativeLayout
android:id="@+id/base_activity__add_button__container"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@android:color/transparent" />

</android.support.design.widget.CoordinatorLayout>

Answer

You cannot set the layout anchor attribute to the co ordinator layout itself app:layout_anchor="@id/base_activity__main_layout", this is wrong, you need to set some direct child of the co ordinator as this layouts anchor

Comments