how to move username and password layout move when touching in android

Question

Hi in the below code i have these layout. once touch inside username edittext i want to move full layout upwards.onfousing the keyboard should be stay like that want to move full layout upwards

Can any one help me

layout

<ScrollView  xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        >

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical"
            >

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical">

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="0dp"
                    android:layout_weight="1"
                    android:background="@drawable/texture">

                </LinearLayout>

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="0dp"
                    android:layout_weight="1"
                    android:background="#FFFFFF"
                    android:orientation="vertical"
                    android:id="@+id/login">

                    <LinearLayout
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:orientation="vertical"
                        android:gravity="center"
                        android:paddingTop="100dp"
                        >


                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:textAppearance="?android:attr/textAppearanceMedium"
                            android:textColor="#6E6864"
                            android:text="Sign in to continue"
                            android:id="@+id/login_tv_sign_continue" />

                        <EditText
                            android:layout_width="300dp"
                            android:layout_height="50dp"
                            android:layout_marginTop="20dp"
                            android:paddingLeft="10dp"
                            android:hint="User Name"
                            android:id="@+id/login_ed_username"
                            android:background="@drawable/edit_text_back"
                            android:imeOptions="actionNext"
                            android:singleLine="true"

                            />

                        <EditText
                            android:layout_width="300dp"
                            android:layout_height="50dp"
                            android:layout_marginTop="20dp"
                            android:paddingLeft="10dp"
                            android:hint="Password"
                            android:id="@+id/login_ed_password"
                            android:background="@drawable/edit_text_back"
                            android:imeOptions="actionDone"
                            android:singleLine="true"
                            android:inputType="textPassword"

                            />

                        <Button
                            android:layout_width="300dp"
                            android:layout_height="50dp"
                            android:layout_marginTop="20dp"
                            android:textColor="#6E6864"
                            android:textAppearance="?android:attr/textAppearanceMedium"
                            android:id="@+id/login_btn_login"
                            android:text="Sign In"
                            android:background="#ECBC3B"
                            />

                        <TextView
                            android:layout_width="300dp"
                            android:layout_height="wrap_content"
                            android:textAppearance="?android:attr/textAppearanceSmall"
                            android:id="@+id/txt_forgetpwd"
                            android:text="Forgot Password?"
                            android:gravity="right"
                            android:layout_marginTop="20dp"
                            />

                    </LinearLayout>

                </LinearLayout>

            </LinearLayout>

            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:background="@drawable/logo"
                android:layout_centerHorizontal="true"
                android:layout_centerVertical="true"
                />

        </RelativeLayout>

    </LinearLayout>
</ScrollView>