私が見つけることができたすべてを読んで失敗した後、私はここで尋ねなければなりません:
ドキュメントが私に言うように、私はionic2のストレージを使用しようとしています、
doc: https://ionicframework.com/docs/storage/
ここに私のコードがあります:
app-module.ts
_ import { BrowserModule } from '@angular/platform-browser';
import { ErrorHandler, NgModule } from '@angular/core';
import { IonicApp, IonicErrorHandler, IonicModule } from 'ionic-angular';
import { SplashScreen } from '@ionic-native/splash-screen';
import { StatusBar } from '@ionic-native/status-bar';
import { MyApp } from './app.component';
import { HomePage } from '../pages/home/home';
import { Intro } from '../pages/intro/intro';
import { Checklist } from '../pages/checklist/checklist';
// import { Http } from '@angular/http';
import {IonicStorageModule} from '@ionic/Storage';
import { Data } from '../providers/data';
import {HttpModule} from '@angular/http';
// import {Storage} from '@ionic/storage';
@NgModule({
declarations: [
MyApp,
HomePage,
Intro,
Checklist
],
imports: [
HttpModule,
BrowserModule,
IonicModule.forRoot(MyApp),
IonicStorageModule.forRoot()
],
bootstrap: [IonicApp],
entryComponents: [
MyApp,
HomePage,
Intro,
Checklist
],
providers: [
StatusBar,
SplashScreen,
{provide: ErrorHandler, useClass: IonicErrorHandler},
// Storage,
//Http,
Data
],
})
export class AppModule {}
data.ts
import { Injectable } from '@angular/core';
// import { Http } from '@angular/http';
import 'rxjs/add/operator/map';
// import { HttpModule } from '@angular/http';
import { Storage } from '@ionic/storage';
@Injectable()
export class Data {
constructor(public storage: Storage) {
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
getData(): Promise<any> {
return this.storage.get('checklists');
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
save(data): void {
let saveData = [];
//Remove observables
data.forEach((checklist) => {
saveData.Push({
title: checklist.title,
items: checklist.items
});
});
let newData = JSON.stringify(saveData);
this.storage.set('checklists', newData);
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
}
_
home.ts
_// import { Component } from '@angular/core';
// import { NavController } from 'ionic-angular';
// @Component({
// selector: 'page-home',
// templateUrl: 'home.html'
// })
// export class HomePage {
// constructor(public navCtrl: NavController) {
// }
// }
import { Component } from '@angular/core';
import { NavController, AlertController, Platform } from 'ionic-angular';
import { Checklist } from '../checklist/checklist';
import { ChecklistModel } from '../../models/checklist-model';
import { Data } from '../../providers/data';
import { Keyboard } from 'ionic-native';
@Component({
selector: 'page-home',
templateUrl: 'home.html',
})
export class HomePage {
checklists: ChecklistModel[] = [];
constructor(public navCtrl: NavController, public dataService: Data,
public alertCtrl: AlertController, public platform: Platform) {
}
// constructor(public navCtrl: NavController, public alertCtrl: AlertController, public platform: Platform) {
// // this.checklists.Push(new ChecklistModel("Noam", [1,2,3]));
// }
///////////////////////////////////////////////////////////////////////////////////////////////////////////
ionViewDidLoad() {
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////
addChecklist(): void {
let Prompt = this.alertCtrl.create({
title: 'New Checklist',
message: 'Enter the name of your new checklist below:',
inputs: [
{
name: 'name'
}
],
buttons: [
{
text: 'Cancel'
},
{
text: 'Save',
handler: data => {
let newChecklist = new ChecklistModel(data.name, []);
this.checklists.Push(newChecklist);
newChecklist.checklistUpdates().subscribe(update => {
this.save();
});
this.save();
}
}
]
});
Prompt.present();
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////
renameChecklist(checklist): void {
let Prompt = this.alertCtrl.create({
title: 'Rename Checklist',
message: 'Enter the new name of this checklist below:',
inputs: [
{
name: 'name'
}
],
buttons: [
{
text: 'Cancel'
},
{
text: 'Save',
handler: data => {
let index = this.checklists.indexOf(checklist);
if (index > -1) {
this.checklists[index].setTitle(data.name);
this.save();
}
}
}
]
});
Prompt.present();
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////
viewChecklist(checklist): void {
this.navCtrl.Push(Checklist, {
checklist: checklist
});
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////
removeChecklist(checklist): void {
let index = this.checklists.indexOf(checklist);
if (index > -1) {
this.checklists.splice(index, 1);
this.save();
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////
save(): void {
Keyboard.close();
this.dataService.save(this.checklists);
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////
}
_
呼び出されてストレージを使用することになっているメソッドは、HomePageのsave()
です。
ただし、ページがロードされる前に、
実行時エラーがキャッチされません(約束):エラー:ストレージのプロバイダーがありません! gでのエラー( http:// localhost:8100/build/polyfills.js:3:71 )injectError( http:// localhost:8100/build/main.js: 1585:86 )noProviderError( http:// localhost:8100/build/main.js:1623:12 )at ReflectiveInjector _。throwOrNull(- http:// localhost:8100/build/main.js:3125:19 )ReflectiveInjector。getByKeyDefault( http:// localhost:8100/build/main.js:3164:25 )ReflectiveInjector。getByKey( http :// localhost:8100/build/main.js:3096:25 )ReflectiveInjector。get( http:// localhost:8100/build/main。 js:2965:21 )AppModuleInjector.get(ng:///AppModule/module.ngfactory.js:254:82)at AppModuleInjector.getInternal(ng:///AppModule/module.ngfactory.js:481) :44)AppModuleInjector.NgModuleInjector.get( http:// localhost:8100/build/main.js:3929:44 )でresolveDep( http:// localhost:8100/build/main.js:11334:45 )createClassで( http:// localhost:8100/build/main.js:11202:32 )createDireでctiveInstance( http:// localhost:8100/build/main.js:11028:37 )at createViewNodes(- http:// localhost:8100/build/main.js:12377: 49 )createRootView( http:// localhost:8100/build/main.js:12282:5 )
Package.json:
_{
"name": "ionic-hello-world",
"author": "Ionic Framework",
"homepage": "http://ionicframework.com/",
"private": true,
"config": {
"ionic_source_map": "source-map"
},
"scripts": {
"clean": "ionic-app-scripts clean",
"build": "ionic-app-scripts build",
"ionic:build": "ionic-app-scripts build",
"ionic:serve": "ionic-app-scripts serve"
},
"dependencies": {
"@angular/common": "4.0.0",
"@angular/compiler": "4.0.0",
"@angular/compiler-cli": "4.0.0",
"@angular/core": "4.0.0",
"@angular/forms": "4.0.0",
"@angular/http": "4.0.0",
"@angular/platform-browser": "4.0.0",
"@angular/platform-browser-dynamic": "4.0.0",
"@ionic-native/core": "3.4.2",
"@ionic-native/splash-screen": "3.4.2",
"@ionic-native/status-bar": "3.4.2",
"@ionic/storage": "^2.0.1",
"ionic-angular": "3.0.1",
"ionic-native": "^2.9.0",
"ionicons": "3.0.0",
"rxjs": "5.1.1",
"sw-toolbox": "3.4.0",
"zone.js": "^0.8.4"
},
"devDependencies": {
"@ionic/app-scripts": "1.3.0",
"TypeScript": "~2.2.1",
"webpack": "^2.4.1"
},
"cordovaPlugins": [
"cordova-plugin-whitelist",
"cordova-plugin-console",
"cordova-plugin-statusbar",
"cordova-plugin-device",
"cordova-plugin-splashscreen",
"ionic-plugin-keyboard"
],
"cordovaPlatforms": [],
"description": "quicklists: An Ionic project"
}
_
ドキュメントが言ったことはすべてやりましたので、教えてください-ストレージが見つからない原因となるものがまだありません
ありがとう
まず、インストールする必要があります:npm install --save @ionic/storage
問題はapp.tsにありました。
import {IonicStorageModule} from '@ionic/Storage';
非大文字の「s」の代わりに大文字の「S」:
from '@ionic/Storage'
の代わりに:
from '@ionic/storage'
コンパイラが問題である場合にそれをキャッチしない理由はわかりませんが、キャッチしませんでした。
@chairmanmowに感謝
私の場合、app.module.tsに以下を追加するのを忘れていました
import { IonicStorageModule } from '@ionic/storage';
@NgModul({
...,
Imports: [
...
IonicStorageModule.forRoot()
],
最初にこのnpm install --save @ ionic/storageを実行します
私はこれを使用してこれを機能させることができました..
内部app.module.ts
import { Storage } from '@ionic/storage';
その後 ...
providers: [{provide: ErrorHandler, useClass: IonicErrorHandler}, Storage]
そして、私のpage.ts
import { Storage } from '@ionic/storage';
コンストラクターで...
public storage: Storage
そして、私のコードの根幹内で..
this.storage.get('date').then((value) => {
// blah
});
Please use this plugin for native storage
ionic cordova plugin add cordova-plugin-nativestorage
npm install --save @ionic-native/native-storage
app.module.tsをインポートします
import { NativeStorage } from '@ionic-native/native-storage';
providers: [
StatusBar,
SplashScreen,
NativeStorage,
LocalStorageProvider,
{provide: ErrorHandler, useClass: IonicErrorHandler}
]
ここにコードを入力してください