Dimension size = driver.manage().window().getSize() not working on android device

Question

I am receiving this error:

Platform = Android, Browser = chrome 
org.openqa.selenium.WebDriverException: unknown error: operation is unsupported on Android
  (Session info: chrome=68.0.3440.91)
  (Driver info: chromedriver=2.30.477690

I am running the script on chrome browser.

Answer 1

I resolved this issue by switching the context to NATIVE_APP to get screen resolution and then again switch back to "WEBVIEW" or "CHROMIUM" which ever is applicable.

Below mentioned is the function I have used driver.context("NATIVE_APP")