我在使用Ionic2在页面之间导航时遇到了一些问题。
我有一个数据列表,我从data.json
获得这是列表
我想了解详情:
示例 - 来自" A"
我的数据/ Example.Json
上的数据 {
"title": "A",
"lat": 2.323733,
"lon": 64,546465
},
所以,一旦我点击标题,我想在新页面上获得标题,lat和lon。
app.modules.ts
import { NgModule, ErrorHandler } from '@angular/core';
import { IonicApp, IonicModule, IonicErrorHandler } from 'ionic-angular';
import { MyApp } from './app.component';
import { HomePage } from '../pages/home/home';
import { MapPage } from '../pages/map/map';
import { ListPage } from '../pages/list/list';
import { DetailPage } from '../pages/detail/detail';
import { Locations } from '../providers/locations';
import { GoogleMaps } from '../providers/google-maps';
import { Connectivity } from '../providers/connectivity';
declare var google: any;
@NgModule({
declarations: [
MyApp,
HomePage,
MapPage,
ListPage,
DetailPage
],
imports: [
IonicModule.forRoot(MyApp)
],
bootstrap: [IonicApp],
entryComponents: [
MyApp,
HomePage,
MapPage,
ListPage,
DetailPage
],
providers: [{provide: ErrorHandler, useClass: IonicErrorHandler},Locations,GoogleMaps, Connectivity]
})
export class AppModule {}
import { NgModule, ErrorHandler } from '@angular/core';
import { IonicApp, IonicModule, IonicErrorHandler } from 'ionic-angular';
import { MyApp } from './app.component';
import { HomePage } from '../pages/home/home';
import { MapPage } from '../pages/map/map';
import { ListPage } from '../pages/list/list';
import { DetailPage } from '../pages/detail/detail';
import { Locations } from '../providers/locations';
import { GoogleMaps } from '../providers/google-maps';
import { Connectivity } from '../providers/connectivity';
declare var google: any;
@NgModule({
declarations: [
MyApp,
HomePage,
MapPage,
ListPage,
DetailPage
],
imports: [
IonicModule.forRoot(MyApp)
],
bootstrap: [IonicApp],
entryComponents: [
MyApp,
HomePage,
MapPage,
ListPage,
DetailPage
],
providers: [{provide: ErrorHandler, useClass: IonicErrorHandler},Locations,GoogleMaps, Connectivity]
})
export class AppModule {}
PageA.ts(数据列表)
import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';
import { Locations } from '../../providers/locations';
import { DetailPage } from '../detail/detail';
@Component({
selector: 'page-list',
templateUrl: 'list.html'
})
export class ListPage {
constructor(public navCtrl: NavController, public locations: Locations) {
}
ionViewDidLoad() {
console.log('Test Si marche');
}
viewLocation(event,location) {
this.navCtrl.push(DetailPage, {
"title":location.title,
"longitude":location.longitude
})
}
}
页面B(我想在点击列表中的内容后立即获取详细信息)
import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';
import {NavParams} from "ionic-angular";
import { Locations} from '../../providers/locations';
import { ListPage } from '../list/list';
@Component({
selector: 'page-detail',
templateUrl: 'detail.html',
providers: [ Locations ],
entryComponents:[ ListPage ]
})
export class DetailPage {
title: string
latitude: string
navParams: NavParams
constructor(navParams: NavParams,public navCtrl: NavController) {
this.navParams = navParams
this.title = this.navParams.get('locations').title;
this.latitude = this.navParams.get('locations').latitude;
}
ionViewDidLoad(err) {
console.log(err);
}
goBack() {
this.navCtrl.pop();
}
}
listA.html
<ion-header>
<ion-navbar color="secondary">
<ion-title>List</ion-title>
</ion-navbar>
</ion-header>
<ion-content>
<ion-list no-lines>
<ion-item *ngFor="let location of locations.data">
<ion-item (click)="viewLocation($event, locations)">{{locations.title}}</ion-item>
<ion-avatar item-left>
<ion-icon name="pin"></ion-icon>
</ion-avatar>
<!--<img src="./src/pics/mus.png"/>-->
<h2>{{location.title}}</h2>
<p>{{location.distance*1.609}} Km</p>
</ion-item>
</ion-list>
</ion-content>
data.json
[
{ "title": "Cat", "longitude": "14,57" },
{ "title": "Bird", "longitude": "17.45" },
{ "title": "Spider", "longitude": "19,12" }
]
所以我收到了这个错误:无法读取属性&#39;参数&#39;在ReflectionCapabilities.parameters中未定义
答案 0 :(得分:0)
请更改第B页的代码 从 (你的代码)
constructor(navParams: NavParams,public navCtrl: NavController) {
this.navParams = navParams
this.title = this.navParams.get('locations').title;
this.latitude = this.navParams.get('locations').latitude;
}
到(我的代码)
constructor(navParams: NavParams,public navCtrl: NavController) {
this.navParams = navParams
this.title = this.navParams.get('title');
this.latitude = this.navParams.get('longitude');