NativeScript/apps/app/modaltest/modal-tab.33.xml

<Page backgroundColor="blue" actionBarHidden="true" loaded="pageLoaded"
    codeFile='~/modaltest/modal-tab'>
    <ActionBar title="Frame in Modal Page">
        <ActionItem text="close" tap="closeModal" />
    </ActionBar>
    <TabView backgroundColor="magenta">
        <TabViewItem title="Button">
            <StackLayout verticalAlignment="center" backgroundColor="green"  verticalAlignment="bottom" horizontalAlignment="right">
                <Button text="Close Modal" tap="tap" />
                <Button text="Show Modal Frame" tap="onModalFrame" />
            </StackLayout>
        </TabViewItem>
        <TabViewItem title="Frame">
            <ScrollView backgroundColor="cyan">
                <StackLayout backgroundColor="pink" verticalAlignment="bottom" >
                    <Label text="I'm frame in modal page" />
                    <Label text="Tap the button" />
                    <Button text="TAP" tap="onTap" />
                    <Button text="Do 10 go backs" tap="tenGoBacks" />
                    <Button text="Navigate To Page with Frame" tap="navigateToPageWithFrame" />
                </StackLayout>
            </ScrollView>            
        </TabViewItem>
        <TabViewItem title="Item 3">
            <ScrollView>
                <StackLayout verticalAlignment="bottom" horizontalAlignment="right">
                    <Button text="Close Modal" tap="tap" />
                    <Button text="Show Modal Frame" tap="onModalFrame" />
                </StackLayout>
            </ScrollView>
        </TabViewItem> 
    </TabView>
</Page>