[SOLVED] Android: When the soft keyboard pops up, the EditText is invisible

Just add android:windowSoftInputMode="adjustPan" for your activity in manifest file

<activity android:name="SampleActivity" android:label="@string/app_name" android:windowSoftInputMode="adjustPan" >
...
</activity>

Source: stackoverflow.com

Documentation: http://developer.android.com/guide/topics/manifest/activity-element.html#wsoft
Tutorial: http://android-developers.blogspot.com/2009/04/updating-applications-for-on-screen.html