Switch to a popup on android native app

I am trying to switch to a popup and interact with the elements on the popup.
I tried using:
dr.switchTo() but it is not working. Is there a way/method to do so? or Am I doing it totally wrong?..
android/java/appium: Also please let me know if any further info is needed.

You can interact with whatever is on the screen at the time. Use find_element with the appropriate parameters and then interact with the resulting object.

switchTo() is used for switching the context, e.g. to or from webview.