[Android]Unable to change sendKeyStrategy

I have a use case on Android where I want to use sendKeys() to send one character, and assert on some response from server, and then append another character in the same input field, and then assert on the new response. In this case, the default Android sendKeys function doesn’t work as I expected because it always clears the input field whenever I do sendKeys(someKey) and starts over.
I’d like to use a strategy to just append the character or text to the input field.
In the documentation, it seems Android does not have the capability of setting a sendKeyStrategy. I don’t know if there is a way to do it on Android or not. If not sendKeys(), can anyone tell me what method I should use?