Question

我有一些初始数据要插入我的数据库中。我已将它添加到我的自定义SQLiteOpenHelper类中。

package com.company.database;

import android.content.Context; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteOpenHelper;

public class MySQLiteOpenHelper extends SQLiteOpenHelper {
    public static final String TABLE_NAMES = "names";
    public static final String COLUMN_ID = "_id";
    public static final String COLUMN_NAME = "name";

    private static final String DATABASE_NAME = "my.db";
    private static final int DATABASE_VERSION = 1;

    private static final String TABLE_NAMES_CREATE = "CREATE TABLE " + TABLE_NAMES + "("
            + COLUMN_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, "
            + COLUMN_NAME + " VARCHAR NOT NULL);";

    private static final String TABLE_NAMES_INSERT = "INSERT INTO " + TABLE_NAMES
            + "(" + COLUMN_NAME + ")" + " VALUES "
            + "('Antony'),"
            + "('Benny'),"
            + "('Carol'),"
            + "('Daniel'),"
            // ... AND SO ON ...

    public MySQLiteOpenHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

    @Override
    public void onCreate(SQLiteDatabase database) {
        database.execSQL(TABLE_NAMES_CREATE);
    }

    @Override
    public void onUpgrade(SQLiteDatabase database, int oldVersion, int newVersion) {
        dropTable(database);
        onCreate(database);
    }

    private void dropTable(SQLiteDatabase database) {
        database.execSQL("DROP TABLE IF EXISTS " + TABLE_NAMES);
    } }

请注意插入声明。名字的数量会增加，我不想保持这个混乱。

我该怎么做才能解决它？

Answer 1

您可以将数据库与应用程序一起“发送”。这样，您可以预设详细信息，而无需在用户下载时提交。但请注意，应用程序文件大小可能会增加，具体取决于数据的大小。可用于实现此目的的库是SQLite资产助手（链接：https://github.com/jgilfelt/android-sqlite-asset-helper）

Answer 2

您可以在计算机上创建数据库，将其包含在APK中，并在第一次运行时将其加载到应用中。

http://www.reigndesign.com/blog/using-your-own-sqlite-database-in-android-applications/

SQLiteOpenHelper - 我在哪里存储初始数据？

2 个答案: