Is there any way to force the portrait screen even the hard keyboard is popped?

I specified an activity to be portrait-only in menifest file:

<activity android:name="mytest"
              android:alwaysRetainTaskState="true"
              android:windowSoftInputMode="adjustResize|stateAlwaysHidden"
              android:screenOrientation="portrait">

But it won't work on Droid when its hard keyboard is popped out.

Whe开发者_StackOverflown hard keyboard is popped out, the device always renders the layout of the activity in landscape orientation first, then it switches it back to portrait orientation. How can I let the app only render the activity in portrait orientation?

Can anyone help? Thanks.

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Try using this in your activity description

android:configChanges="keyboardHidden"