在Android中，使用SQLite數據庫進行數據存儲是一種常見的方法

1. 添加權限：

在AndroidManifest.xml文件中，添加以下權限：

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

2. 創建數據庫幫助類：

創建一個名為MyDBHelper的類，該類繼承自SQLiteOpenHelper。這個類將用于創建和管理SQLite數據庫。

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

public class MyDBHelper extends SQLiteOpenHelper {
    private static final String DATABASE_NAME = "myDatabase";
    private static final int DATABASE_VERSION = 1;

    public static final String TABLE_NAME = "myTable";
    public static final String COLUMN_ID = "_id";
    public static final String COLUMN_NAME = "name";
    public static final String COLUMN_AGE = "age";

    private static final String CREATE_TABLE = "CREATE TABLE " + TABLE_NAME + " ("
            + COLUMN_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, "
            + COLUMN_NAME + " TEXT NOT NULL, "
            + COLUMN_AGE + " INTEGER);";

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

    @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL(CREATE_TABLE);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        db.execSQL("DROP TABLE IF EXISTS " + TABLE_NAME);
        onCreate(db);
    }
}

3. 在Activity中使用數據庫：

在你的Activity中，使用MyDBHelper類來創建、打開和操作數據庫。

import android.os.Bundle;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {
    MyDBHelper myDBHelper;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        myDBHelper = new MyDBHelper(this);

        // 插入數據
        insertData("張三", 25);
        insertData("李四", 30);

        // 查詢數據
        String name = queryData(1);
        if (name != null) {
            Toast.makeText(this, "查詢到的名字: " + name, Toast.LENGTH_SHORT).show();
        } else {
            Toast.makeText(this, "沒有查詢到數據", Toast.LENGTH_SHORT).show();
        }
    }

    private void insertData(String name, int age) {
        SQLiteDatabase db = myDBHelper.getWritableDatabase();
        ContentValues values = new ContentValues();
        values.put(MyDBHelper.COLUMN_NAME, name);
        values.put(MyDBHelper.COLUMN_AGE, age);
        db.insert(MyDBHelper.TABLE_NAME, null, values);
        db.close();
    }

    private String queryData(int id) {
        String result = null;
        SQLiteDatabase db = myDBHelper.getReadableDatabase();
        Cursor cursor = db.query(MyDBHelper.TABLE_NAME, new String[]{MyDBHelper.COLUMN_NAME}, MyDBHelper.COLUMN_ID + "=?", new String[]{String.valueOf(id)}, null, null, null);
        if (cursor.moveToFirst()) {
            result = cursor.getString(cursor.getColumnIndex(MyDBHelper.COLUMN_NAME));
        }
        cursor.close();
        db.close();
        return result;
    }
}

這個示例展示了如何在Android中使用SQLite數據庫進行數據存儲。你可以根據需要修改表結構、列名和操作方法。