Question

我有一个API，我希望用户登录到AWS Cognito，但我不想强迫应用程序开发人员使用android aws sdk。我怎样才能做到这一点？我猜Cognito有一个api，但我不确定那会是什么？我看过aws android文档，但他们专注于sdk的使用。

Answer 1

如果您想在没有任何其他api的情况下登录。那么您必须尝试像sqlite这样的本地数据库。

public class DataBaseHelper extends SQLiteOpenHelper {

private String TAG = "DataBaseHelper";

private SQLiteDatabase mSqLiteDatabase;
private Context mContext;

/*Constructor call when you initialize  DataBasseHelper class*/
public DataBaseHelper(Context context) {
    super(context, DataBaseConstants.DATABASE_NAME, null, DataBaseConstants.DATABASE_VERSION);
    this.mContext = context;
}

/*onCreate Method is used to create table */
@Override
public void onCreate(SQLiteDatabase db) {
    Logger.e(TAG, "call onCreate");

    db.execSQL("create table userInfo (id integer primary key AUTOINCREMENT, email text NOT NULL,password text NOT NULL, createdDate text NOT NULL)");

}

/*onUpgrade Method call when database version changed,
that time exsting table delete and new table create.
when we want new table create that time onCreate method will use.*/
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
    Logger.e(TAG, "call onUpgrade");
    if (oldVersion < newVersion) {
        db.execSQL("DROP TABLE " + "tableName");

        onCreate(db);
    }
}

/*onCopydatabase Method is used to copy existing database*/
public boolean onCopyDatabase(Context context) {
    Logger.e(TAG, "call onCopyDatabase");
    try {
        InputStream inputStream = context.getAssets().open(DataBaseConstants.DATABASE_NAME);
        String dbPath = mContext.getDatabasePath(DataBaseConstants.DATABASE_NAME).getPath();

        String outFileName = dbPath + "/" + DataBaseConstants.DATABASE_NAME;
        Logger.e(TAG, "Database path is : " + outFileName);

        OutputStream outputStream = new FileOutputStream(outFileName);
        byte[] buff = new byte[1024];
        int length = 0;
        while ((length = inputStream.read(buff)) > 0) {
            outputStream.write(buff, 0, length);
        }
        outputStream.flush();
        outputStream.close();
        Log.w(TAG, "DataBase copied");
        return true;
    } catch (Exception e) {
        e.printStackTrace();
        return false;
    }
}

}

不使用AWS开发工具包登录到Android应用

1 个答案: