Android BottomSheetDialogFragment does not expand completely

Question

I have the following test bottom sheet implementation.

When I set the peekHeight to a value less than 500, it works. After some value, any increase in peek height will not change how the bottom sheet is expanded. It Just remains there to only drag manually. How do we set the peekHeight programmatically to ensure that the bottom sheet is auto expanded to the peek height.

bottom_sheet_dialog_main

<?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"     android:id="@+id/locUXCoordinatorLayout"     android:layout_width="match_parent"     android:layout_height="wrap_content">      <LinearLayout         android:id="@+id/locUXView"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:fitsSystemWindows="true"         android:orientation="vertical"         app:behavior_hideable="false"         app:behavior_peekHeight="0dp"         app:layout_behavior="@string/bottom_sheet_behavior">          <TextView             android:layout_width="match_parent"             android:layout_height="100dp"             android:text="1 Value" />          <TextView             android:layout_width="match_parent"             android:layout_height="100dp"             android:text="2 Value" />          <TextView             android:layout_width="match_parent"             android:layout_height="100dp"             android:text="3 Value" />          <TextView             android:layout_width="match_parent"             android:layout_height="100dp"             android:text="4 Value" />          <TextView             android:layout_width="match_parent"             android:layout_height="100dp"             android:text="5 Value" />          <TextView             android:layout_width="match_parent"             android:layout_height="100dp"             android:text="6 Value" />          <TextView             android:layout_width="match_parent"             android:layout_height="100dp"             android:text="7 Value" />          <TextView             android:layout_width="match_parent"             android:layout_height="100dp"             android:text="8 Value" />          <TextView             android:layout_width="match_parent"             android:layout_height="100dp"             android:text="9 Value" />          <TextView             android:layout_width="match_parent"             android:layout_height="100dp"             android:text="First Value" />     </LinearLayout> </android.support.design.widget.CoordinatorLayout> 

Java code

public class MyBottomSheetDialogFragment extends BottomSheetDialogFragment {      private static BottomSheetBehavior bottomSheetBehavior;     private static View bottomSheetInternal;     private static MyBottomSheetDialogFragment INSTANCE;      @Nullable     @Override     public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {         getDialog().setOnShowListener(new DialogInterface.OnShowListener() {             @Override             public void onShow(DialogInterface dialog) {                 BottomSheetDialog d = (BottomSheetDialog) dialog;                 CoordinatorLayout coordinatorLayout = (CoordinatorLayout)d.findViewById(R.id.locUXCoordinatorLayout);                 bottomSheetInternal = d.findViewById(R.id.locUXView);                 bottomSheetBehavior = BottomSheetBehavior.from(bottomSheetInternal);                 bottomSheetBehavior.setPeekHeight(bottomSheetInternal.getHeight());                 bottomSheetInternal.requestLayout();                 coordinatorLayout.getLayoutParams().height = bottomSheetInternal.getHeight();                 Toast.makeText(getActivity(), "Height is" + bottomSheetInternal.getHeight() + "  " + coordinatorLayout.getLayoutParams().height, Toast.LENGTH_LONG).show();              }         });         INSTANCE = this;         return inflater.inflate(R.layout.bottom_sheet_dialog_main, container, false);     } } 

Answer 1

Using this code in onCreateView.

getDialog().setOnShowListener(new DialogInterface.OnShowListener() {         @Override         public void onShow(DialogInterface dialog) {             BottomSheetDialog d = (BottomSheetDialog) dialog;             FrameLayout bottomSheet = (FrameLayout) d.findViewById(R.id.design_bottom_sheet);             CoordinatorLayout coordinatorLayout = (CoordinatorLayout) bottomSheet.getParent();             BottomSheetBehavior bottomSheetBehavior = BottomSheetBehavior.from(bottomSheet);             bottomSheetBehavior.setPeekHeight(bottomSheet.getHeight());             coordinatorLayout.getParent().requestLayout();         }     });