Question

我正在尝试将ionic-tooltips模块与Ionic v4结合使用。该模块已通过npm安装。

创建一个新的空白项目，并按照模块站点中的安装步骤进行操作，我遇到了一些问题。首先，有了一些缺少的组件，我能够手动更改某些文件的导入，就像在此question中一样。

之后，我又遇到了另一个错误：

ERROR Error: Uncaught (in promise): Error: Template parse errors:
Can't bind to 'ngIf' since it isn't a known property of 'div'. ("
    <div [ERROR ->]*ngIf="tooltipHtml; else txt" [innerHTML]="tooltipHtml"></div>
    <ng-template #txt>{{ text }}</ng-t"): ng:///TooltipsModule/TooltipBox.html@1:9
Can't bind to 'ngIfElse' since it isn't a known property of 'div'. ("
    <div [ERROR ->]*ngIf="tooltipHtml; else txt" [innerHTML]="tooltipHtml"></div>
    <ng-template #txt>{{ text }}</ng-t"): ng:///TooltipsModule/TooltipBox.html@1:9
Property binding ngIf not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the "@NgModule.declarations". ("
    [ERROR ->]<div *ngIf="tooltipHtml; else txt" [innerHTML]="tooltipHtml"></div>
    <ng-template #txt>{{ text }}<"): ng:///TooltipsModule/TooltipBox.html@1:4
Property binding ngIfElse not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the "@NgModule.declarations". ("
    [ERROR ->]<div *ngIf="tooltipHtml; else txt" [innerHTML]="tooltipHtml"></div>
    <ng-template #txt>{{ text }}<"): ng:///TooltipsModule/TooltipBox.html@1:4
Error: Template parse errors:
Can't bind to 'ngIf' since it isn't a known property of 'div'. ("
    <div [ERROR ->]*ngIf="tooltipHtml; else txt" [innerHTML]="tooltipHtml"></div>
    <ng-template #txt>{{ text }}</ng-t"): ng:///TooltipsModule/TooltipBox.html@1:9
Can't bind to 'ngIfElse' since it isn't a known property of 'div'. ("
    <div [ERROR ->]*ngIf="tooltipHtml; else txt" [innerHTML]="tooltipHtml"></div>
    <ng-template #txt>{{ text }}</ng-t"): ng:///TooltipsModule/TooltipBox.html@1:9
Property binding ngIf not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the "@NgModule.declarations". ("
    [ERROR ->]<div *ngIf="tooltipHtml; else txt" [innerHTML]="tooltipHtml"></div>
<ng-template #txt>{{ text }}<"): ng:///TooltipsModule/TooltipBox.html@1:4

经过一些搜索，我得到了一些会聚到相同solution的遮篷：将Ionic CommonModule导入到您的主模块。我做到了，没有成功。

我的 home.page.html ：

<ion-content>
    <ion-button tooltip="I'm a tooltip below a button" positionV="bottom" arrow>
       Press me to see a tooltip
      </ion-button>
</ion-content>

home.module.ts：

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { IonicModule } from '@ionic/angular';
import { FormsModule } from '@angular/forms';
import { RouterModule } from '@angular/router';

import { HomePage } from './home.page';

import { TooltipsModule } from 'ionic-tooltips';

@NgModule({
  imports: [
    CommonModule,
    FormsModule,
    IonicModule,
    RouterModule.forChild([
      {
        path: '',
        component: HomePage
      }
    ]),
    TooltipsModule.forRoot()
  ],
  declarations: [HomePage]
})
export class HomePageModule {}

app.module.ts （我最后一次尝试导入CommonModule的地方）：

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { RouteReuseStrategy } from '@angular/router';

import { IonicModule, IonicRouteStrategy } from '@ionic/angular';
import { SplashScreen } from '@ionic-native/splash-screen/ngx';
import { StatusBar } from '@ionic-native/status-bar/ngx';

import { AppComponent } from './app.component';
import { AppRoutingModule } from './app-routing.module';

import { BrowserAnimationsModule } from '@angular/platform-browser/animations';

@NgModule({
  declarations: [AppComponent],
  entryComponents: [],
  imports: [BrowserModule, IonicModule.forRoot(), AppRoutingModule, BrowserAnimationsModule],
  providers: [
    StatusBar,
    SplashScreen,
    { provide: RouteReuseStrategy, useClass: IonicRouteStrategy }
  ],
  bootstrap: [AppComponent]
})
export class AppModule {}

如果缺少任何信息，请询问。

Answer 1

我没有解决此问题，但是我可以使用带有其他包装的popperjs和带有角度包装器ngx-popper的Ionic v4使用工具提示。

（Ionic v4 + ionic-tooltips）->无法绑定到“ ngIf”，因为它不是“ div”的已知属性

1 个答案: