How to hide Android soft keyboard on EditText

You need to add the following attribute for the Activity in your AndroidManifest.xml.

<activity
    ...
    android:windowSoftInputMode="stateHidden|adjustResize"
    ...
/>

This will help you

editText.setInputType(InputType.TYPE_NULL);

Edit:

To show soft keyboard, you have to write following code in long key press event of menu button

editText.setInputType(InputType.TYPE_CLASS_TEXT);
            editText.requestFocus();
            InputMethodManager mgr = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
            mgr.showSoftInput(editText, InputMethodManager.SHOW_FORCED);

I sometimes use a bit of a trick to do just that. I put an invisible focus holder somewhere on the top of the layout. It would be e.g. like this

 <EditText android:id="@id/editInvisibleFocusHolder"
          style="@style/InvisibleFocusHolder"/>

with this style

<style name="InvisibleFocusHolder">
    <item name="android:layout_width">0dp</item>
    <item name="android:layout_height">0dp</item>
    <item name="android:focusable">true</item>
    <item name="android:focusableInTouchMode">true</item>
    <item name="android:inputType">none</item>
</style>

and then in onResume I would call

    editInvisibleFocusHolder.setInputType(InputType.TYPE_NULL);
    editInvisibleFocusHolder.requestFocus();

That works nicely for me from 1.6 up to 4.x