How to open Keyboard on Button click in android?

Question

How can I open Keyboard on Button click in android?

What I want to be like this:

Answer 1

Write this code inside the Button click event to TOGGLE the keyboard:

InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.toggleSoftInput(InputMethodManager.SHOW_FORCED,0);