in нижний колонтитул на основе * ngif условие im изменение значков нижнего колонтитула ... он отлично работает в android , но не в дело IOS
<Button class="footer-class" textWrap="true" (tap)="onNavItemTap('/profile')" *ngIf="isLoggedIn">
<FormattedString>
<Span fontFamily="FontAwesome" [text]="profile" class="icon-style fa"></Span>
<Span text="
profile" class="footer-title"></Span>
</FormattedString>
</Button>
<Button class="footer-class" textWrap="true" (tap)="onNavItemTap('/contactus')">
<FormattedString>
<Span fontFamily="FontAwesome" [text]="contactus" class="icon-style fa"></Span>
<Span text="
contactus" class="footer-title"></Span>
</FormattedString>
</Button>
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