How to turn off Text Prediction Programatically ?

Hi

I am developing an Android Air Banking application using Flex Hero (Mobile) framework, I am facing a security challenge, as its a banking application.

Problem:

While user entering his/her credentials login ID /password, the "Text Prediction" of device showing the last entered User ID & Password in prediction popup. Is there any way to control it programatically, specifically in case of password, I want to turn off / disable the Text prediction popup.

PS : I also tried making the password input "displayPasswordText=true" still its showing the popup.

Is there any API which can communicate to device features or any work aroud for the same.

Need help, thanks in advance.

Regards

Kishor Ranga