keyboard android

<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">

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:id="@+id/voucherrelative"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <TextView
            android:id="@+id/vouchertxt"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:layout_alignParentTop="true"
            android:layout_marginTop="20dp"
            android:gravity="center"
            android:text="Enter Voucher Code"
            android:textSize="25sp" />

        <LinearLayout
            android:id="@+id/linearLayout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:layout_below="@+id/vouchertxt"
            android:layout_marginBottom="20dp"
            android:layout_marginTop="20dp"
            android:focusable="true"
            android:focusableInTouchMode="true"
            android:orientation="horizontal"
            android:weightSum="3">

            <EditText
                android:singleLine="true"
                android:inputType="number"
                android:imeOptions="actionDone"
                android:id="@+id/code1"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginRight="2dp"
                android:layout_weight="1"
                android:focusable="true"
                android:focusableInTouchMode="true"
                android:gravity="center"
                android:maxLength="3"
                android:textSize="25dp" />


            <EditText
                android:imeOptions="actionNext"
                android:id="@+id/code2"
                android:inputType="number"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginRight="2dp"
                android:layout_weight="1"
                android:gravity="center"
                android:maxLength="3"
                android:textSize="25dp" />

            <EditText
                android:id="@+id/code3"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:gravity="center"
                android:inputType="number"
                android:maxLength="3"
                android:textSize="25dp" />

        </LinearLayout>

        <LinearLayout
            android:id="@+id/linearLayout2"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_below="@+id/linearLayout"
            android:layout_marginBottom="5dp"
            android:orientation="horizontal"
            android:weightSum="5">

            <Button
                android:id="@+id/button7"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginRight="2dp"
                android:layout_weight="1"
                android:background="@drawable/roundedbutton"
                android:text="7"

                android:textColor="#ffffff"


                />

            <Button
                android:id="@+id/button8"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_below="@+id/linearLayout"
                android:layout_marginRight="2dp"
                android:layout_toEndOf="@+id/linearLayout2"
                android:layout_toRightOf="@+id/linearLayout2"
                android:layout_weight="1"
                android:background="@drawable/roundedbutton"
                android:text="8"
                android:textColor="#ffffff" />

            <Button
                android:id="@+id/button9"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_alignEnd="@+id/button9"
                android:layout_alignRight="@+id/button9"
                android:layout_below="@+id/linearLayout"
                android:layout_marginRight="2dp"
                android:layout_weight="1"
                android:background="@drawable/roundedbutton"
                android:text="9"
                android:textColor="#ffffff"

                />

            <Button
                android:id="@+id/buttonDel"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_alignBottom="@+id/button9"
                android:layout_alignEnd="@+id/scanqr"
                android:layout_alignRight="@+id/scanqr"
                android:layout_weight="2"
                android:background="@drawable/roundedwhite"
                android:text="Del"
                android:textColor="#191919" />

        </LinearLayout>

        <LinearLayout
            android:id="@+id/linearLayout3"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:layout_below="@+id/linearLayout2"
            android:layout_marginBottom="5dp"
            android:orientation="horizontal"
            android:weightSum="5">

            <Button
                android:id="@+id/button4"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginRight="2dp"
                android:layout_weight="1"
                android:background="@drawable/roundedbutton"
                android:text="4"
                android:textColor="#ffffff" />

            <Button
                android:id="@+id/button5"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_below="@+id/linearLayout"
                android:layout_marginRight="2dp"
                android:layout_toEndOf="@+id/linearLayout2"
                android:layout_toRightOf="@+id/linearLayout2"
                android:layout_weight="1"
                android:background="@drawable/roundedbutton"
                android:text="5"
                android:textColor="#ffffff" />

            <Button
                android:id="@+id/button6"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_alignEnd="@+id/button9"
                android:layout_alignRight="@+id/button9"
                android:layout_below="@+id/linearLayout"
                android:layout_weight="1"
                android:background="@drawable/roundedbutton"
                android:text="6"
                android:textColor="#ffffff"

                />

            <Button
                android:id="@+id/buttonclear"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="2"
                android:background="@drawable/roundedwhite"
                android:text="Clear"
                android:textColor="#191919"

                />
        </LinearLayout>

        <LinearLayout
            android:id="@+id/linearLayout4"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_alignParentLeft="true"

            android:layout_alignParentStart="true"
            android:layout_below="@+id/linearLayout3"
            android:layout_marginBottom="5dp"
            android:orientation="horizontal"
            android:weightSum="5">

            <Button
                android:id="@+id/button1"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginRight="2dp"
                android:layout_weight="1"
                android:background="@drawable/roundedbutton"
                android:text="1"
                android:textColor="#ffffff" />

            <Button
                android:id="@+id/button2"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_below="@+id/linearLayout"
                android:layout_marginRight="2dp"
                android:layout_toEndOf="@+id/linearLayout2"
                android:layout_toRightOf="@+id/linearLayout2"
                android:layout_weight="1"
                android:background="@drawable/roundedbutton"
                android:text="2"
                android:textColor="#ffffff" />

            <Button
                android:id="@+id/button3"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_below="@+id/linearLayout"
                android:layout_marginRight="2dp"
                android:layout_weight="1"
                android:background="@drawable/roundedbutton"
                android:text="3"
                android:textColor="#ffffff"


                />

            <Button
                android:id="@+id/buttoncancel"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_alignEnd="@+id/scanqr"
                android:layout_alignRight="@+id/scanqr"
                android:layout_weight="2"
                android:background="@drawable/roundedwhite"

                android:text="Cancel"
                android:textColor="#191919" />
        </LinearLayout>

        <LinearLayout
            android:id="@+id/linearLayout5"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_alignParentBottom="true"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:layout_below="@+id/linearLayout4"
            android:orientation="horizontal"
            android:weightSum="5">

            <Button
                android:id="@+id/button0"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginRight="2dp"
                android:layout_weight="1"
                android:background="@drawable/roundedbutton"
                android:text="0"
                android:textColor="#ffffff" />

            <Button
                android:id="@+id/scanqr"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginRight="2dp"
                android:layout_weight="2"

                android:background="@drawable/roundedwhite"
                android:text="Scan "
                android:textColor="#191919" />

            <Button
                android:id="@+id/buttoncheck"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="2"
                android:background="@drawable/roundedbutton"
                android:text="Check"
                android:textColor="#ffffff"

                />

        </LinearLayout>

    </RelativeLayout>
</ScrollView>