include custon_switch_btn for choice between Export/Import. The dialog SHOULD change aspect.

Add corresponding colors

app/src/main/res/layout/backupprefs.xml

@@ -13,11 +13,7 @@
     <androidx.constraintlayout.widget.ConstraintLayout
         android:id="@+id/constraintLayout"
         android:layout_width="match_parent"
-        android:layout_height="match_parent">
-
-
-
-    </androidx.constraintlayout.widget.ConstraintLayout>
+        android:layout_height="match_parent"/>
 
     <com.google.android.material.floatingactionbutton.FloatingActionButton
         android:id="@+id/btn_addFruit"
@@ -38,31 +34,14 @@
         app:layout_anchor="@+id/constraintLayout"
         app:layout_anchorGravity="center">
 
-        <RadioGroup
-            android:id="@+id/radio_select"
-            android:layout_width="match_parent"
-            android:layout_height="0dp"
-            android:layout_weight="1"
-            android:orientation="horizontal">
 
-            <RadioButton
-                android:id="@+id/backup_btn"
-                android:layout_width="194dp"
-                android:layout_height="wrap_content"
-                android:text="@string/export_prescriptions"/>
 
-            <RadioButton
-                android:id="@+id/restore_btn"
-                android:layout_width="194dp"
-                android:layout_height="wrap_content"
-                android:text="@string/import_prescriptions" />
-        </RadioGroup>
+        <include layout="@layout/custom_switch_btn"/>
         <LinearLayout
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:orientation="horizontal">
 
-
             <Button
                 android:id="@+id/btn_backup_location"
                 style="@style/Widget.MaterialComponents.Button"

app/src/main/res/layout/custom_switch_btn.xml

@@ -0,0 +1,32 @@
+<com.google.android.material.button.MaterialButtonToggleGroup android:id="@+id/toggleGroup"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:layout_gravity="center"
+    app:checkedButton="@id/switch_btn_export"
+    app:singleSelection="true"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <Button
+        style="@style/Widget.MaterialComponents.Button.OutlinedButton"
+        android:id="@+id/switch_btn_export"
+        android:layout_width="0dp"
+        android:layout_weight="1"
+        android:layout_height="wrap_content"
+        android:text="@string/export_prescriptions"
+        android:backgroundTint="@color/selected_backgroundf"
+        android:textColor="@color/white"
+        />
+
+    <Button
+        style="@style/Widget.MaterialComponents.Button.OutlinedButton"
+        android:id="@+id/switch_btn_import"
+        android:layout_width="0dp"
+        android:layout_weight="1"
+        android:layout_height="wrap_content"
+        android:text="@string/import_prescriptions"
+        android:backgroundTint="@color/unselected_backgroud"
+        android:textColor="@color/white"
+        />
+
+</com.google.android.material.button.MaterialButtonToggleGroup>

app/src/main/res/values/colors.xml

@@ -18,4 +18,6 @@
 
     <color name="led">#31f623</color>
     <color name="grey">#777</color>
+    <color name="unselected_backgroud">#777777</color>
+    <color name="selected_backgroundf">#4f91ff</color>
 </resources>