session-android/res/layout/change_passphrase_activity.xml

<?xml version="1.0" encoding="utf-8"?>

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:fillViewport="true">

    <FrameLayout android:layout_width="fill_parent"
                 android:layout_height="wrap_content"
                 android:gravity="center">
        
        <LinearLayout android:paddingRight="16dip"
                      android:paddingLeft="16dip"
                      android:paddingTop="10dip"
                      android:layout_width="fill_parent"
                      android:layout_height="wrap_content"
                      android:layout_gravity="center"
                      android:visibility="visible"
                      android:orientation="vertical">
                
            <android.support.design.widget.TextInputLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content">

                <EditText android:id="@+id/old_passphrase"
                          android:layout_width="match_parent"
                          android:layout_height="wrap_content"
                          android:inputType="textPassword"
                          android:layout_marginBottom="10dip"
                          android:hint="@string/change_passphrase_activity__old_passphrase"
                          android:singleLine="true"/>

            </android.support.design.widget.TextInputLayout>

            <android.support.design.widget.TextInputLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content">

                <EditText android:id="@+id/new_passphrase"
                          android:layout_width="fill_parent"
                          android:layout_height="wrap_content"
                          android:inputType="textPassword"
                          android:hint="@string/change_passphrase_activity__new_passphrase"
                          android:singleLine="true"/>

            </android.support.design.widget.TextInputLayout>

            <android.support.design.widget.TextInputLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content">

                <EditText android:id="@+id/repeat_passphrase"
                          android:layout_width="fill_parent"
                          android:layout_height="wrap_content"
                          android:inputType="textPassword"
                          android:hint="@string/change_passphrase_activity__repeat_new_passphrase"
                          android:singleLine="true" />

            </android.support.design.widget.TextInputLayout>

            <LinearLayout android:orientation="horizontal"
                          android:layout_width="fill_parent"
                          android:layout_height="wrap_content"
                          android:layout_marginTop="30dip">

                <Button android:id="@+id/cancel_button"
                        android:text="@android:string/cancel"
                        android:layout_weight="1"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_marginRight="7dip"
                        android:textAppearance="?android:attr/textAppearanceMedium"/>
                
                <Button android:id="@+id/ok_button"
                        android:text="@android:string/ok"
                        android:layout_weight="1"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:textAppearance="?android:attr/textAppearanceMedium"/>                
            </LinearLayout>                        
        </LinearLayout>
    </FrameLayout>
</ScrollView>