AndroidAPS/app/src/main/res/layout/passwordprompt.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:padding="10dp" >

    <EditText
        android:id="@+id/passwordprompt_pass"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="@string/password_hint"
        android:inputType="textPassword"
        >

        <requestFocus />

    </EditText>

</LinearLayout>