我在我的NativeScript-Angular项目中添加了side drawer plugin。我的app.component.html如下:
<RadSideDrawer>
<GridLayout tkDrawerContent rows="auto, *" class="sidedrawer sidedrawer-left">
<StackLayout row="0" style="margin-bottom: 30px;">
<StackLayout orientation="horizontal" style="padding: 13px 20px;">
<label text="Hasan Tekin" textWrap="false" style="font-size: 20px;color: white;margin: 20 30 10 10;"></label>
</StackLayout>
</StackLayout>
<ScrollView row="1">
<StackLayout class="sidedrawer-content">
<StackLayout *ngFor="let item of state.sideDrawer.items; let i = index">
<StackLayout orientation="horizontal" style="padding: 13px 0;" (tap)="activateMenuItem(i)" [routerLink]="['/mysurveys']">
<Image [src]="item.active ? '~/assets/images/arrowGreen.png' : '~/assets/images/arrowGray.png'" style="width: 40px;margin: 0 20px;"></Image>
<label text={{item.text}} textWrap="false" [class]="item.active ? 'menuItemActive' : 'menuItem'"></label>
</StackLayout>
<StackLayout class="hr-dark m-10">
</StackLayout>
</StackLayout>
</StackLayout>
</ScrollView>
</GridLayout>
<page-router-outlet tkMainContent class="page page-content"></page-router-outlet>
</RadSideDrawer>
当我运行tns run android --bundle
时,会出现此错误:
Error: java.lang.IllegalArgumentException: Cannot add a null child view to a ViewGroup
可能是什么原因?
答案 0 :(得分:1)
这完全是我的错误。我在app.module.ts
中而不是app.module.tns.ts
中导入了边抽屉。现在,我删除了该导入并将其写入app.module.tns.ts
,它可以正常工作。