Unable to handle elements in Android App which is wrapped under WebApp designed with AngularJS

I am currently working on Android App to Automate the test cases using selenium & Appium 3.0, but unable to find the elements using UiAutomator tool. The locators for Login page are visible in UiAutomator but inside the app, which is wrapped under Webapp designed with AngularJS are not detectable in UiAutomator. Please help me in this regard.