Android SharedPreferences

I have next xml

<RelativeLayout xmlns:android="http://ift.tt/nIICcg"
xmlns:tools="http://ift.tt/LrGmb4" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">

<ScrollView xmlns:android="http://ift.tt/nIICcg"
    xmlns:tools="http://ift.tt/LrGmb4"
    android:layout_width="fill_parent"
    android:layout_height="match_parent"
    android:scrollbars="none"
    tools:context="info.senyk.ustat3.StatActivity"
    android:layout_above="@+id/editTextLogin"
    android:background="#ffff2341"
    android:id="@+id/scrollView">


</ScrollView>
<Button
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/Login"
    android:id="@+id/buttonLogin"
    android:layout_alignParentBottom="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:layout_marginLeft="0dp"
    android:layout_marginStart="55dp"
    android:layout_marginRight="0dp"
    android:layout_marginBottom="0dp"
    android:onClick="onClickButtonLogin" />

<EditText
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/editTextLogin"
    android:ems="4"
    android:hint="@string/Login"
    android:layout_above="@+id/buttonLogin"
    android:layout_alignLeft="@+id/scrollView"
    android:layout_alignStart="@+id/scrollView"
    android:inputType="text" />

<EditText
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/editTextAt"
    android:hint="\@"
    android:editable="false"
    android:enabled="false"
    android:inputType="none"
    android:layout_below="@+id/scrollView"
    android:layout_toLeftOf="@+id/editTextHostname"
    android:layout_toStartOf="@+id/editTextHostname" />

<EditText
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/editTextHostname"
    android:hint="@string/Hostname"
    android:layout_below="@+id/scrollView"
    android:layout_toLeftOf="@+id/editTextColon"
    android:layout_toStartOf="@+id/editTextColon"
    android:inputType="text" />

<EditText
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/editTextColon"
    android:hint="@string/Colon"
    android:layout_below="@+id/scrollView"
    android:layout_toLeftOf="@+id/editTextPort"
    android:layout_toStartOf="@+id/editTextPort"
    android:inputType="none" />

<EditText
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/editTextPort"
    android:text="@string/Port22"
    android:inputType="number"
    android:layout_below="@+id/scrollView"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true" />

<EditText
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/editTextPassword"
    android:ems="4"
    android:hint="@string/Password"
    android:layout_below="@+id/scrollView"
    android:layout_toRightOf="@+id/editTextColon0"
    android:layout_toLeftOf="@+id/editTextAt"
    android:layout_toStartOf="@+id/editTextAt"
    android:inputType="textPassword" />

<EditText
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/editTextColon0"
    android:hint="@string/Colon"
    android:layout_below="@+id/scrollView"
    android:layout_toRightOf="@+id/editTextLogin"
    android:layout_toEndOf="@+id/editTextLogin"
    android:inputType="none" />

I have three editText for Login, Password and Hostname and button Login

In top of the screen I have ScrollView and I need save credentials. But I want save all distinct hostname (like a history) every time when user press button login.

I mean it need to dynamic create one table row or TextView for each credential?

Any ideas?