feat: BottomSheet add default collapsed sheet height for android

Author: vallemar

src/bottomsheet/bottomsheet-common.ts

@@ -31,6 +31,7 @@ export interface BottomSheetOptions {
     ignoreBottomSafeArea?: boolean; // optional ios parameter to bottom safe area. Default is false
     disableDimBackground?: boolean; // optional parameter to remove the dim background
     skipCollapsedState?: boolean; // optional Android parameter to skip midway state when view is greater than 50%. Default is false
+    peekHeight?: number // optional Android parameter to set the collapsed sheet height.
 }
 
 export abstract class ViewWithBottomSheetBase extends View {

src/bottomsheet/bottomsheet.android.ts

@@ -1,5 +1,5 @@
 import { applyMixins } from '@nativescript-community/ui-material-core';
-import { AndroidActivityBackPressedEventData, Application, View, fromObject } from '@nativescript/core';
+import { AndroidActivityBackPressedEventData, Application, View, fromObject, Utils } from '@nativescript/core';
 import { BottomSheetOptions, ViewWithBottomSheetBase } from './bottomsheet-common';
 
 export { ViewWithBottomSheetBase } from './bottomsheet-common';
@@ -133,6 +133,12 @@ export class ViewWithBottomSheet extends ViewWithBottomSheetBase {
                     // disable peek/collapsed state
                     behavior.setSkipCollapsed(true);
                 }
+                
+                const peekHeight = bottomSheetOptions.options?.peekHeight;
+                if(peekHeight){
+                    behavior.setState(com.google.android.material.bottomsheet.BottomSheetBehavior.STATE_COLLAPSED);
+                    behavior.setPeekHeight(Utils.layout.toDevicePixels(peekHeight));
+                }
 
                 if (owner && !owner.isLoaded) {
                     owner.callLoaded();