Round corner for BottomSheetDialogFragment

Question

i have an custom BttomSheetDialogFragment and i want to have round corners in top of Bottom View

this is my Custom class that inflating my layout that i want to appear from bottom

View mView;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    mView = inflater.inflate(R.layout.charge_layout, container, false);
    initChargeLayoutViews();
    return mView;
}

and also i have this xml resource file as background :

<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle"
>
<corners android:topRightRadius="35dp"
    android:topLeftRadius="35dp"
    />
<solid android:color="@color/white"/>

<padding android:top="10dp"
    android:bottom="10dp"
    android:right="16dp"
    android:left="16dp"/>

but the problem is, when i set this resource file as background of my Layout's root element , the corners still are not rounded

and i can't use below code :

    this.getDialog().getWindow().setBackgroundDrawableResource(R.drawable.charge_layout_background);

cuz its override default background of BottomSheetDialog and there wont be any semi-transparent gray color above my Bottom View

Answer 1

Create a custom drawable rounded_dialog.xml:

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <solid android:color="@android:color/white"/>
    <corners android:topLeftRadius="16dp"
        android:topRightRadius="16dp"/>

</shape>

Then override bottomSheetDialogTheme on styles.xml using the drawable as background:

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">       
    <item name="bottomSheetDialogTheme">@style/AppBottomSheetDialogTheme</item>
</style>

<style name="AppBottomSheetDialogTheme"
    parent="Theme.Design.Light.BottomSheetDialog">
    <item name="bottomSheetStyle">@style/AppModalStyle</item>
</style>

<style name="AppModalStyle"
    parent="Widget.Design.BottomSheet.Modal">
    <item name="android:background">@drawable/rounded_dialog</item>
</style>

This will change all the BottomSheetDialogs of your app.