After relaunching the app not able to identified the element in Android

Steps detail:

1- launch the app
2- switched to webview.
3- doing testing
4- then closing the app by using driver.closeApp()
5- Then launch the app again calling driver.launchApp();
6- Now again switched to webview.
7- Now it is saying Nosuchelement while interacting with the elements.

Please tell me whether I missed anything.

It is not able switch the context second time.

Any suggestion ?