How to include keypad in layout?

i am creating app, which requeres to display keypad all the time. For window i layout described in *.xml. How i can add keypad to this view? for eg:

<开发者_JAVA技巧;layout>
  <textView/>
  <image/>
  <keypad/>
</layout>

you cannot add the keyboard to your layout, and to force the keyboard to be always visible in a certain Activity by adding this to your activity element in the manifest: android:windowSoftInputMode="stateAlwaysVisible"