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私はここにチュートリアル以下午前：AWS：認証ハンドラjava.lang.AbstractMethodError：
04-09 01:56:42.557 16494-16494/umbc.edu.app E/AndroidRuntime: FATAL EXCEPTION: main
Process: umbc.edu.app, PID: 16494
java.lang.AbstractMethodError: abstract method "void com.amazonaws.mobileconnectors.cognitoidentityprovider.handlers.AuthenticationHandler.onSuccess(com.amazonaws.mobileconnectors.cognitoidentityprovider.CognitoUserSession, com.amazonaws.mobileconnectors.cognitoidentityprovider.CognitoDevice)"
at com.amazonaws.mobileconnectors.cognitoidentityprovider.CognitoUser$5$1.run(CognitoUser.java:639)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:6862)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)
import android.content.Intent;
import android.content.IntentFilter;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import com.amazonaws.mobileconnectors.cognitoidentityprovider.CognitoUserSession;
import com.amazonaws.mobileconnectors.cognitoidentityprovider.continuations.AuthenticationContinuation;
import com.amazonaws.mobileconnectors.cognitoidentityprovider.continuations.AuthenticationDetails;
import com.amazonaws.mobileconnectors.cognitoidentityprovider.continuations.MultiFactorAuthenticationContinuation;
import com.amazonaws.mobileconnectors.cognitoidentityprovider.handlers.AuthenticationHandler;
import umbc.edu.helpers.AppHelper;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
EditText username, password;
Button login;
TextView create_acount;
String username_, password_;
String TAG = "MainActivity.class";
protected String tag = "MainActivity";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.w(tag, "onCreate()");
setContentView(R.layout.activity_main);
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
username = (EditText) findViewById(R.id.username);
password = (EditText) findViewById(R.id.password);
login = (Button) findViewById(R.id.login_button);
login.setOnClickListener(this);
create_acount = (TextView) findViewById(R.id.create_account);
create_acount.setOnClickListener(this);
}
@Override
protected void onPause() {
super.onPause();
Log.w(tag, "onPause()");
}
@Override
protected void onResume() {
super.onResume();
Log.w(tag, "onResume()");
}
@Override
protected void onDestroy() {
super.onDestroy();
Log.w(tag, "onDestroy()");
}
@Override
protected void onStart() {
super.onStart();
Log.w(tag, "onStart()");
}
@Override
protected void onStop() {
super.onStop();
Log.w(tag, "onStop()");
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.login_button:
username_ = username.getText().toString();
password_ = password.getText().toString();
if (!username_.matches("") && !password_.matches("")) {
AppHelper.init(getApplicationContext());
AppHelper.getPool().getUser(username_).getSessionInBackground(authenticationHandler);
}
break;
case R.id.create_account:
Intent intent = new Intent(this, CreateAccountActivity.class);
startActivity(intent);
break;
}
}
AuthenticationHandler authenticationHandler = new AuthenticationHandler() {
@Override
public void onSuccess(CognitoUserSession cognitoUserSession) {
Log.d(TAG, "Auth Success");
AppHelper.setCurrSession(cognitoUserSession);
//Go To Home Activity
startActivity(new Intent(MainActivity.this, HomeActivity.class));
}
@Override
public void getAuthenticationDetails(AuthenticationContinuation authenticationContinuation, String username) {
// The API needs user sign-in credentials to continue
AuthenticationDetails authenticationDetails = new AuthenticationDetails(username_, password_, null);
// Pass the user sign-in credentials to the continuation
authenticationContinuation.setAuthenticationDetails(authenticationDetails);
// Allow the sign-in to continue
authenticationContinuation.continueTask();
}
@Override
public void getMFACode(MultiFactorAuthenticationContinuation multiFactorAuthenticationContinuation) {
Toast.makeText(MainActivity.this, "GET MFA CODE CALLED", Toast.LENGTH_LONG).show();
}
@Override
public void onFailure(Exception e) {
Toast.makeText(MainActivity.this, "Failed" + e.getLocalizedMessage(), Toast.LENGTH_LONG).show();
}
};
}
：ここ
http://docs.aws.amazon.com/cognito/latest/developerguide/tutorial-integrating-user-pools-android.html
は私のコードです
どうすれば解決できますか？それは別のライブラリを使用しているかのようです。