update app/utils/constant.js

Strides-APP/app/utils/constant.js

@@ -24,6 +24,7 @@ global.$height = Dimensions.get('window').height;
 global.$screen = Dimensions.get('screen').height;
 global.statusHeight = isIOS ? 0 : StatusBar.currentHeight;
 global.toolbarSize = isIOS ? 50 : 56;
+global.navbarHeight = 0;
 if (isIOS) {
   const {StatusBarManager} = NativeModules;
   StatusBarManager.getHeight(statusBarHeight => {