<!-- Two states switch -->
    <com.rm.rmswitch.RMSwitch
                android:id="@+id/your_id"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                
                app:checked="true"
                app:forceAspectRatio="false"
                app:enabled="true"
                app:switchDesign="android"
                app:switchBkgCheckedColor="@color/green"
                app:switchBkgNotCheckedColor="@color/red"
                app:switchToggleCheckedColor="@color/green"
                app:switchToggleCheckedImage="@drawable/happy"
                app:switchToggleNotCheckedColor="@color/red"
                app:switchToggleNotCheckedImage="@drawable/sad"/>
                
    <!-- Three states switch -->                
    <com.rm.rmswitch.RMTristateSwitch
                android:id="@+id/your_id2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                
                app:forceAspectRatio="false"
                app:state="left"
                app:enabled="true"
                app:switchDesign="large"
                app:switchBkgLeftColor="@color/red"
                app:switchBkgMiddleColor="@color/grey"
                app:switchBkgRightColor="@color/green"
                app:switchToggleLeftColor="@color/red"
                app:switchToggleLeftImage="@drawable/sad"
                app:switchToggleMiddleColor="@color/grey"
                app:switchToggleMiddleImage="@drawable/neutral"
                app:switchToggleRightColor="@color/green"
                app:switchToggleRightImage="@drawable/happy"/>