BottomSheetDialogFragment opens half

Question

My BottomSheetDialogFragment opens half (mean not fully) when I open it.

fragment.show(supportFragmentManager, "my_frag")

I tried NestedScrollView with behavior_peekHeight but did not work.
Tried without NestedScrollView. with only LinearLayout.
Tried switching height between match_parent & wrap_content

I have simple RecyclerView in BottomSheetDialogFragment layout.

<android.support.v4.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <LinearLayout
            ...
            >
           <android.support.v7.widget.RecyclerView
           ...
           />

ADM · Accepted Answer · 2019-02-15T04:05:34.680

By BottomSheetFragment you mean BottomSheetDialogFragment . To open expended sheet you need to make some changes in onCreateDialog().

 @Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    BottomSheetDialog bottomSheetDialog=(BottomSheetDialog)super.onCreateDialog(savedInstanceState);
    bottomSheetDialog.setOnShowListener(new DialogInterface.OnShowListener() {
        @Override
        public void onShow(DialogInterface dialog) {
            BottomSheetDialog dialog = (BottomSheetDialog) dialog;
            FrameLayout bottomSheet =  dialog .findViewById(android.support.design.R.id.design_bottom_sheet);
            BottomSheetBehavior.from(bottomSheet).setState(BottomSheetBehavior.STATE_EXPANDED);
            BottomSheetBehavior.from(bottomSheet).setSkipCollapsed(true);
            BottomSheetBehavior.from(bottomSheet).setHideable(true);
        }
    });
    return bottomSheetDialog;
}

Just keep the layout match_parent no need to use NestedScrollView. It worked for me . Let me know if you still face problem .

In case someone is using New Material library . Which is
implementation 'com.google.android.material:material:1.0.0'. Then you need change the id of Parent FrameLayout. So it will be .

 @Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    BottomSheetDialog bottomSheetDialog=(BottomSheetDialog)super.onCreateDialog(savedInstanceState);
    bottomSheetDialog.setOnShowListener(new DialogInterface.OnShowListener() {
        @Override
        public void onShow(DialogInterface dia) {
            BottomSheetDialog dialog = (BottomSheetDialog) dia;
            FrameLayout bottomSheet =  dialog .findViewById(com.google.android.material.R.id.design_bottom_sheet);
            BottomSheetBehavior.from(bottomSheet).setState(BottomSheetBehavior.STATE_EXPANDED);
            BottomSheetBehavior.from(bottomSheet).setSkipCollapsed(true);
            BottomSheetBehavior.from(bottomSheet).setHideable(true);
        }
    });
    return bottomSheetDialog;
}

Make sure all your imports from import com.google.android.materialin this case.

So a small thing need to be fixed by 6 lines code. This is bad about Android. — Khemraj Sharma, Aug 10 '18 at 09:22
In a way its good (just to fulfill all requirement ). You see the flags `setSkipCollapsed` and `setHideable` are very useful in case you do not want to anchor the sheet in between. and there must be more. — ADM, Aug 10 '18 at 09:27
By any chance if you are having a `EditText` in bottom sheet (like a chat view) and you struggle with `SoftInputMode` just follow [This answer](https://stackoverflow.com/a/37748167/7995966) . I have wasted 2 days to get it . Thought it might worth to share . No other solution worked for me except this one . — ADM, Aug 10 '18 at 09:30
Thanks @ADM, it's a useful share, but already solved problem with only using `STATE_EXPANDED`. I did not use `setSkipCollapsed` & `setHideable`. — Khemraj Sharma, Aug 10 '18 at 09:33
I would prefer this way since it does not require hard coding any resource id `BottomSheetBehavior bottomSheetBehavior = ((BottomSheetDialog)dialog).getBehavior(); bottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);` — prateek, Jun 11 '20 at 09:30

score 1 · Answer 2 · answered Aug 10 '18 at 09:17

You are accessing your parent view so use below code to expand it into Full screen.

View parent = (View) inflatedView.getParent();
parent.setFitsSystemWindows(true);
BottomSheetBehavior bottomSheetBehavior = BottomSheetBehavior.from(parent);
inflatedView.measure(0, 0);
DisplayMetrics displaymetrics = new DisplayMetrics();        getActivity().getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
int screenHeight = displaymetrics.heightPixels;
bottomSheetBehavior.setPeekHeight(screenHeight);

if (params.getBehavior() instanceof BottomSheetBehavior) {
    ((BottomSheetBehavior)params.getBehavior()).setBottomSheetCallback(mBottomSheetBehaviorCallback);
}

params.height = screenHeight;
parent.setLayoutParams(params);

Hope it helps you.

Thanks but I just got answer there https://stackoverflow.com/a/35976745/6891563 — Khemraj Sharma, Aug 10 '18 at 09:24

BottomSheetDialogFragment opens half

2 Answers2

Linked