android - React Native讀取本機SQLite路徑配置-PHP中文網路問答

import React from 'react'; import SQLiteStorage from 'react-native-sqlite-storage'; SQLiteStorage.DEBUG(true); var database_name = "promo.db"; var database_version = "1.0"; var database_displayname = "MySQLite"; var database_size = -1; var db; const Product_TABLE_NAME = "Product";//收藏表 const SQLite = React.createClass({ render(){ return null; }, componentWillUnmount(){ if(db){ this._successCB('close'); db.close(); }else { console.log("SQLiteStorage not open"); } }, open(){ db = SQLiteStorage.openDatabase( database_name, database_version, database_displayname, database_size, ()=>{ this._successCB('open'); }, (err)=>{ this._errorCB('open',err); }); }, createTable(){ if (!db) { open(); } //创建表 db.transaction((tx)=> { tx.executeSql('CREATE TABLE IF NOT EXISTS ' + Product_TABLE_NAME + '(' + 'id INTEGER PRIMARY KEY NOT NULL,' + 'name VARCHAR,' + 'jan VARCHAR,' + 'price VARCHAR,' + 'img VARCHAR,' + 'url VARCHAR,' + 'title VARCHAR' + ');' , [], ()=> { this._successCB('executeSql'); }, (err)=> { this._errorCB('executeSql', err); }); }, (err)=> { this._errorCB('transaction', err); }, ()=> { this._successCB('transaction'); }) }, close(){ if(db){ this._successCB('close'); db.close(); }else { console.log("SQLiteStorage not open"); } db = null; }, _successCB(name){ console.log("SQLiteStorage "+name+" success"); }, _errorCB(name, err){ console.log("SQLiteStorage "+name+" error:"+err); } }); module.exports = SQLite;

請問怎樣在哪配置資料庫的路徑，能讀取到行動端本地的sqlite.db ，不用每次都建立新的？

import React,{Component} from 'react'; import{ ToastAndroid, } from 'react-native'; import SQLiteStorage from 'react-native-sqlite-storage'; SQLiteStorage.DEBUG(true); var database_name = "/sdcard/TabletPromo/Promo.db";//数据库文件 var database_version = "1.0";//版本号 var database_displayname = "MySQLite"; var database_size = -1;//-1应该是表示无限制 var db; class SQLite extends Component { componentWillUnmount(){ if(db){ this._successCB('close'); db.close(); }else { console.log("SQLiteStorage not open"); } } open(){ db = SQLiteStorage.openDatabase( database_name, database_version, database_displayname, database_size, ()=>{ this._successCB('open'); }, (err)=>{ this._errorCB('open',err); }); return db; } close(){ if(db){ this._successCB('close'); db.close(); }else { console.log("SQLiteStorage not open"); } db = null; } _successCB(name){ console.log("SQLiteStorage "+name+" success"); } _errorCB(name, err){ console.log("SQLiteStorage "+name); console.log(err); } render(){ return null; } }; export default SQLite;