Unable to click on the button

I am unable to click on the button (marked in red).

I have tried this > driver.findElement(By.xpath("//android.widget.Button[contains(@text=’R′]")).click();

But it is giving an error " no such element present ".

Can you guys please help me.

How to handle a button with same “text” and “className”?

Please ask your developer/s or the manager ( to ask them ) to provide accessibility id for each of the elements, as it will help in automation and as well making sure your app is accessibility compatible

Refer to

I think you need to change as,