I have the following .xml file:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/main_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/grey_100"
android:orientation="vertical"
android:weightSum="4">
<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="3"
    android:gravity="center_horizontal"
    android:orientation="vertical">
    <ImageView
        android:id="@+id/login_logo"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="@dimen/welcome_bottom_margin"
        android:layout_marginTop="@dimen/login_logo_margin_top"
        android:theme="@style/ThemeOverlay.MyTitleText"
        app:srcCompat="@mipmap/ic_launcher" />
    <TextView
        android:id="@+id/status"
        style="@style/ThemeOverlay.MyTextDetail"
        android:text="@string/signed_out" />
</LinearLayout>
<RelativeLayout
    android:layout_width="fill_parent"
    android:layout_height="0dp"
    android:layout_weight="1"
    android:background="@color/grey_300"
    android:gravity="center_vertical">
    <LinearLayout
        android:id="@+id/email_password_fields"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:paddingLeft="16dp"
        android:focusable="true"
        android:focusableInTouchMode="true"
        android:paddingRight="16dp">
        <EditText
            android:id="@+id/field_email"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:hint="@string/hint_email"
            android:inputType="textEmailAddress" />
        <EditText
            android:id="@+id/field_password"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:hint="@string/hint_password"
            android:inputType="textPassword" />
    </LinearLayout>
    <LinearLayout
        android:id="@+id/email_password_buttons"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/email_password_fields"
        android:orientation="horizontal"
        android:paddingLeft="16dp"
        android:paddingRight="16dp">
        <Button
            android:id="@+id/email_sign_in_button"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="@string/sign_in"
            android:theme="@style/ThemeOverlay.MyDarkButton" />
        <Button
            android:id="@+id/email_create_account_button"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="@string/create_account"
            android:theme="@style/ThemeOverlay.MyDarkButton" />
    </LinearLayout>      
</RelativeLayout>
</LinearLayout>
That looks like this. But when I open my keyboard it hides 80% of the RelativeLayout. 
How may I move the layout above the keyboard?
I have found a diversity of answers but none of them seem to work.
EDIT:
Even after adding android:windowSoftInputMode="adjustResize" in my Manifest like such: 
<activity android:name=".MainActivity"
            android:windowSoftInputMode="adjustResize" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
            </intent-filter>
 </activity>`
I get the following outcome:
 .
.
 
     
     
     
     
    