Question

我收到此错误：在我的数据库提供程序中预期有1个参数，但得到0。 ...我正在尝试创建本地存储。

database.ts

import { HttpClient } from '@angular/common/http';
import { Injectable } from '@angular/core';

import { Storage } from '@ionic/storage';


@Injectable()
export class DatabaseProvider {


  local : any;

  constructor(public http: HttpClient) {
    console.log('Hello DatabaseProvider Provider');

    this.local = new Storage();
  }

}

我的错误是创建新存储时的行＆＃34; this.local = new Storage（）;＆＃34; ...所以，Storage（）似乎在等待争论......什么论点？我已尝试过＆＃34; localstorage＆＃34;但它仍无法正常工作

Answer 1

您可以使用SQLite

尝试此操作

import { HttpClient } from '@angular/common/http';
import { Injectable } from '@angular/core';
import { SQLite } from 'ionic-native';


@Injectable()
export class DatabaseProvider {


  local : any;

  constructor(public http: HttpClient) {
    console.log('Hello DatabaseProvider Provider');

    this.local = new SQLite();
  }

}

或（但我相信SqlStorage已被弃用）

import { HttpClient } from '@angular/common/http';
import { Injectable } from '@angular/core';

import { Storage, SqlStorage } from '@ionic/storage';


@Injectable()
export class DatabaseProvider {


  local : any;

  constructor(public http: HttpClient) {
    console.log('Hello DatabaseProvider Provider');

    this.local = new Storage(SqlStorage);
  }

}

IONIC 3＆＃34;期望1个参数，但得到0＆＃34;

1 个答案: