如何在Android的本地存储上存储登录详细信息

SharedPreferences sharedPreferences = getSharedPreferences("login_info", Context.MODE_PRIVATE);

SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString("username", "your_username");
editor.putString("password", "your_password");
editor.apply();

String username = sharedPreferences.getString("username", "");
String password = sharedPreferences.getString("password", "");

public class DBHelper extends SQLiteOpenHelper {
    private static final String DATABASE_NAME = "login.db";
    private static final int DATABASE_VERSION = 1;

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

    @Override
    public void onCreate(SQLiteDatabase db) {
        String createTableQuery = "CREATE TABLE login_info (username TEXT, password TEXT)";
        db.execSQL(createTableQuery);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        // 数据库升级操作
    }
}

DBHelper dbHelper = new DBHelper(context);
SQLiteDatabase db = dbHelper.getWritableDatabase();

ContentValues values = new ContentValues();
values.put("username", "your_username");
values.put("password", "your_password");

db.insert("login_info", null, values);
db.close();

DBHelper dbHelper = new DBHelper(context);
SQLiteDatabase db = dbHelper.getReadableDatabase();

String[] projection = {"username", "password"};
Cursor cursor = db.query("login_info", projection, null, null, null, null, null);

if (cursor.moveToFirst()) {
    String username = cursor.getString(cursor.getColumnIndex("username"));
    String password = cursor.getString(cursor.getColumnIndex("password"));
}

cursor.close();
db.close();