BottomSheetBehavior is not a child of the coordinatorLayout
this is my XML layout named songlist:
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:id="@+id/viewA"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.6"
android:background="@android:color/holo_purple"
android:orientation="horizontal"/>
<android.support.v4.widget.NestedScrollView
android:id="@+id/bottom_sheet"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@android:color/holo_blue_bright"
app:layout_behavior="android.support.design.widget.BottomSheetBehavior"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="308dp"
/>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
</LinearLayout>
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:clickable="true"
android:src="@drawable/personlog"
app:layout_anchor="@id/viewA"
app:layout_anchorGravity="bottom|center"/>
</android.support.design.widget.CoordinatorLayout>
and this is my snippet that contains this layout:
public class SongList extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.songlist,container,false);
textView=(TextView)view.findViewById(R.id.txt);
View bottomSheet = view.findViewById(R.id.bottom_sheet);
BottomSheetBehavior bottomSheetBehavior = BottomSheetBehavior.from(bottomSheet);
bottomSheetBehavior.setPeekHeight(200);
return view;}
}
but when lunch the app gives me this error:
java.lang.IllegalArgumentException: The view is not a child of CoordinatorLayout
from this line:
BottomSheetBehavior bottomSheetBehavior = BottomSheetBehavior.from(bottomSheet);
how can this be fixed? Everything seems to work fine but throws this error ... if anyone can help
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Interaction plugin for child CoordinatorLayout so that it works like a bottom sheet.
At the moment, your bottom sheet NestedScrollView
is a child LinearLayout
. So just remove the outer one completely LinearLayout
.
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="@+id/viewA"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.6"
android:background="@android:color/holo_purple"
android:orientation="horizontal"/>
<android.support.v4.widget.NestedScrollView
android:id="@+id/bottom_sheet"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@android:color/holo_blue_bright"
app:layout_behavior="android.support.design.widget.BottomSheetBehavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="308dp" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:clickable="true"
android:src="@drawable/personlog"
app:layout_anchor="@id/viewA"
app:layout_anchorGravity="bottom|center" />
</android.support.design.widget.CoordinatorLayout>
But now you have a few more problems with the bottom sheet you are trying to implement. First, you shouldn't be using wrap_content
a scroll list. Second, you shouldn't use a list view inside a scroll, as it implements its own scrolling. You might be able to simplify this just by using the list view as the bottom sheet.
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In my case, instead of
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
I used <android.support.constraint.ConstraintLayout
(in a Fragment or Activity that contains a layout and a BottomSheet).
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