NativeScript/apps/ui/app/list-view/row-height-page.xml

<Page xmlns="http://schemas.nativescript.org/tns.xsd" navigatingTo="onNavigatingTo" class="page">

    <Page.actionBar>
        <ActionBar title="My App" icon="" class="action-bar">
        </ActionBar>
    </Page.actionBar>

    <StackLayout>
        <StackLayout class="p-10" row="0">
            <Label text="Row height = 40" class="body m-b-10"/>
            <ListView items="{{ $value }}" rowHeight="40">
                <ListView.itemTemplate>
                    <Label text="{{ $value }}" backgroundColor="green"/>
                </ListView.itemTemplate>
            </ListView>
        </StackLayout>
        <StackLayout class="p-10" row="0">
            <Label text="Row height pixels = 40" class="body m-b-10"/>
            <ListView items="{{ $value }}" rowHeight="40px">
                <ListView.itemTemplate>
                    <Label text="{{ $value }}" backgroundColor="green"/>
                </ListView.itemTemplate>
            </ListView>
        </StackLayout>
        <StackLayout class="p-10" row="0">
            <Label text="Row height dips = 40" class="body m-b-10"/>
            <ListView items="{{ $value }}" rowHeight="40dips">
                <ListView.itemTemplate>
                    <Label text="{{ $value }}" backgroundColor="green"/>
                </ListView.itemTemplate>
            </ListView>
        </StackLayout>
    </StackLayout>
</Page>