open-keychain/OpenPGP-Keychain/src/main/res/layout/edit_key_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:bootstrapbutton="http://schemas.android.com/apk/res-auto"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:fillViewport="true"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:paddingLeft="16dp"
        android:paddingRight="16dp" >

        <TextView
            style="@style/SectionHeader"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:padding="4dp"
            android:text="@string/label_passphrase" />

        <CheckBox
            android:id="@+id/edit_key_no_passphrase"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/label_no_passphrase" />

        <com.beardedhen.androidbootstrap.BootstrapButton
            android:id="@+id/edit_key_btn_change_pass_phrase"
            android:layout_width="match_parent"
            android:layout_height="60dp"
            android:padding="4dp"
            android:text="@string/btn_set_passphrase"
            bootstrapbutton:bb_icon_left="fa-pencil"
            bootstrapbutton:bb_type="info" />

        <LinearLayout
            android:id="@+id/edit_key_container"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" >
        </LinearLayout>
    </LinearLayout>

</ScrollView>