EditText Keyboard is dissappearing

I have an EditText and 开发者_如何学Goa Button in LinearLayout. When clicked to button, I am removing all views in layout and adding another view. When back button is pressed I am removing all views and adding editText and Button again. Now when I touch on editText, keyboard does not become visible! I think maybe it is a focus issue. How can handle this problem?

Try this code, it will work for you.

InputMethodManager m = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
  if(m != null){
      m.toggleSoftInput(0, InputMethodManager.SHOW_IMPLICIT);
   }

show keyboard using

getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);