how to fix java.lang.AbstractMethodError: abstract method not implemented

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exception in thread main'' java lang abstractmethoderror
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caused by: java lang abstractmethoderror null
java caused by java lang abstractmethoderror

I have this activity and i got the crash saied java.lang.AbstractMethodError: abstract method not implemented how can i solve it? it is like i make the activity impelements of something not implemented but i don't know how to fix it! i faced this problem for many times and i don't know how to solve it!!

public class SelectEndPoint extends AppCompatActivity implements  OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, com.google.android.gms.location.LocationListener {
private GoogleMap mMap;
private GoogleApiClient mGoogleApiClient;
private final static int PLAY_SERVICES_RESOLUTION_REQUEST = 9000;
private static String TAG = "MAP LOCATION";
Context mContext;
TextView mLocationMarkerText;
private LatLng mCenterLatLong;


/**
 * Receiver registered with this activity to get the response from FetchAddressIntentService.
 */
private AddressResultReceiver mResultReceiver;
/**
 * The formatted location address.
 */
protected String mAddressOutput;
protected String mAreaOutput;
protected String mCityOutput;
protected String mStateOutput;
EditText mLocationAddress;
TextView mLocationText;
private static final int REQUEST_CODE_AUTOCOMPLETE = 1;
Toolbar mToolbar;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.select_end_point);
    mContext = this;
    // Obtain the SupportMapFragment and get notified when the map is ready to be used.
    SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
            .findFragmentById(R.id.map);

    mLocationMarkerText = (TextView) findViewById(R.id.locationMarkertext);

    mToolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(mToolbar);
    getSupportActionBar().setDisplayShowHomeEnabled(true);

    getSupportActionBar().setTitle(getResources().getString(R.string.app_name));





    mapFragment.getMapAsync(this);
    mResultReceiver = new AddressResultReceiver(new Handler());

    if (checkPlayServices()) {
        // If this check succeeds, proceed with normal processing.
        // Otherwise, prompt user to get valid Play Services APK.
        if (!AppUtils.isLocationEnabled(mContext)) {
            // notify user
            AlertDialog.Builder dialog = new AlertDialog.Builder(mContext);
            dialog.setMessage("Location not enabled!");
            dialog.setPositiveButton("Open location settings", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface paramDialogInterface, int paramInt) {
                    Intent myIntent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                    startActivity(myIntent);
                }
            });
            dialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface paramDialogInterface, int paramInt) {
                    // TODO Auto-generated method stub

                }
            });
            dialog.show();
        }
        buildGoogleApiClient();
    } else {
        Toast.makeText(mContext, "Location not supported in this device", Toast.LENGTH_SHORT).show();
    }

}


/**
 * Manipulates the map once available.
 * This callback is triggered when the map is ready to be used.
 * This is where we can add markers or lines, add listeners or move the camera. In this case,
 * we just add a marker near Sydney, Australia.
 * If Google Play services is not installed on the device, the user will be prompted to install
 * it inside the SupportMapFragment. This method will only be triggered once the user has
 * installed Google Play services and returned to the app.
 */
@Override
public void onMapReady(GoogleMap googleMap) {
    Log.d(TAG, "OnMapReady");
    mMap = googleMap;

    mMap.setOnCameraChangeListener(new GoogleMap.OnCameraChangeListener() {
        @Override
        public void onCameraChange(CameraPosition cameraPosition) {
            Log.d("Camera postion change" + "", cameraPosition + "");
            mCenterLatLong = cameraPosition.target;


            mMap.clear();

            try {

                Location mLocation = new Location("");
                mLocation.setLatitude(mCenterLatLong.latitude);
                mLocation.setLongitude(mCenterLatLong.longitude);

                startIntentService(mLocation);
                mLocationMarkerText.setText("Lat : " + mCenterLatLong.latitude + "," + "Long : " + mCenterLatLong.longitude);

            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        // TODO: Consider calling
        //    ActivityCompat#requestPermissions
        // here to request the missing permissions, and then overriding
        //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
        //                                          int[] grantResults)
        // to handle the case where the user grants the permission. See the documentation
        // for ActivityCompat#requestPermissions for more details.
        return;
    }

  //mMap.setMyLocationEnabled(true);
  //        mMap.getUiSettings().setMyLocationButtonEnabled(true);
  //
 //        // Add a marker in Sydney and move the camera
  //        LatLng sydney = new LatLng(-34, 151);
 //        mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
//        mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
}

@Override
public void onConnected(Bundle bundle) {
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        // TODO: Consider calling
        //    ActivityCompat#requestPermissions
        // here to request the missing permissions, and then overriding
        //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
        //                                          int[] grantResults)
        // to handle the case where the user grants the permission. See the documentation
        // for ActivityCompat#requestPermissions for more details.
        return;
    }
    Location mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
            mGoogleApiClient);
    if (mLastLocation != null) {
        changeMap(mLastLocation);
        Log.d(TAG, "ON connected");

    } else
        try {
            LocationServices.FusedLocationApi.removeLocationUpdates(
                    mGoogleApiClient, this);

        } catch (Exception e) {
            e.printStackTrace();
        }
    try {
        LocationRequest mLocationRequest = new LocationRequest();
        mLocationRequest.setInterval(10000);
        mLocationRequest.setFastestInterval(5000);
        mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        LocationServices.FusedLocationApi.requestLocationUpdates(
                mGoogleApiClient, mLocationRequest, this);

    } catch (Exception e) {
        e.printStackTrace();
    }

}

@Override
public void onConnectionSuspended(int i) {
    Log.i(TAG, "Connection suspended");
    mGoogleApiClient.connect();
}

@Override
public void onLocationChanged(Location location) {
    try {
        if (location != null)
            changeMap(location);
        LocationServices.FusedLocationApi.removeLocationUpdates(
                mGoogleApiClient, this);

    } catch (Exception e) {
        e.printStackTrace();
    }
}

@Override
public void onConnectionFailed(ConnectionResult connectionResult) {

}


protected synchronized void buildGoogleApiClient() {
    mGoogleApiClient = new GoogleApiClient.Builder(this)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .addApi(LocationServices.API)
            .build();
}

@Override
protected void onStart() {
    super.onStart();
    try {
        mGoogleApiClient.connect();

    } catch (Exception e) {
        e.printStackTrace();
    }
}

@Override
protected void onStop() {
    super.onStop();
    try {

    } catch (RuntimeException e) {
        e.printStackTrace();
    }
    if (mGoogleApiClient != null && mGoogleApiClient.isConnected()) {
        mGoogleApiClient.disconnect();
    }
}

private boolean checkPlayServices() {
    int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
    if (resultCode != ConnectionResult.SUCCESS) {
        if (GooglePlayServicesUtil.isUserRecoverableError(resultCode)) {
            GooglePlayServicesUtil.getErrorDialog(resultCode, this,
                    PLAY_SERVICES_RESOLUTION_REQUEST).show();
        } else {
            //finish();
        }
        return false;
    }
    return true;
}

private void

changeMap(Location location) {

    Log.d(TAG, "Reaching map" + mMap);


    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        // TODO: Consider calling
        //    ActivityCompat#requestPermissions
        // here to request the missing permissions, and then overriding
        //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
        //                                          int[] grantResults)
        // to handle the case where the user grants the permission. See the documentation
        // for ActivityCompat#requestPermissions for more details.
        return;
    }

    // check if map is created successfully or not
    if (mMap != null) {
        mMap.getUiSettings().setZoomControlsEnabled(false);
        LatLng latLong;


        latLong = new LatLng(location.getLatitude(), location.getLongitude());

        CameraPosition cameraPosition = new CameraPosition.Builder()
                .target(latLong).zoom(19f).tilt(70).build();

        mMap.setMyLocationEnabled(true);
        mMap.getUiSettings().setMyLocationButtonEnabled(true);
        mMap.animateCamera(CameraUpdateFactory
                .newCameraPosition(cameraPosition));

        mLocationMarkerText.setText("Lat : " + location.getLatitude() + "," + "Long : " + location.getLongitude());
        startIntentService(location);


    } else {
        Toast.makeText(getApplicationContext(),
                "Sorry! unable to create maps", Toast.LENGTH_SHORT)
                .show();
    }

}


/**
 * Receiver for data sent from FetchAddressIntentService.
 */
class AddressResultReceiver extends ResultReceiver {
    public AddressResultReceiver(Handler handler) {
        super(handler);
    }

    /**
     * Receives data sent from FetchAddressIntentService and updates the UI in MainActivity.
     */
    @Override
    protected void onReceiveResult(int resultCode, Bundle resultData) {

        // Display the address string or an error message sent from the intent service.
        mAddressOutput = resultData.getString(AppUtils.LocationConstants.RESULT_DATA_KEY);

        mAreaOutput = resultData.getString(AppUtils.LocationConstants.LOCATION_DATA_AREA);

        mCityOutput = resultData.getString(AppUtils.LocationConstants.LOCATION_DATA_CITY);
        mStateOutput = resultData.getString(AppUtils.LocationConstants.LOCATION_DATA_STREET);

        displayAddressOutput();

        // Show a toast message if an address was found.
        if (resultCode == AppUtils.LocationConstants.SUCCESS_RESULT) {
            //  showToast(getString(R.string.address_found));


        }


    }

}

/**
 * Updates the address in the UI.
 */
protected void displayAddressOutput() {
    //  mLocationAddressTextView.setText(mAddressOutput);
    try {
        if (mAreaOutput != null)
            // mLocationText.setText(mAreaOutput+ "");

            mLocationAddress.setText(mAddressOutput);
        //mLocationText.setText(mAreaOutput);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

/**
 * Creates an intent, adds location data to it as an extra, and starts the intent service for
 * fetching an address.
 */
protected void startIntentService(Location mLocation) {
    // Create an intent for passing to the intent service responsible for fetching the address.
    Intent intent = new Intent(this, FetchAddressIntentService.class);

    // Pass the result receiver as an extra to the service.
    intent.putExtra(AppUtils.LocationConstants.RECEIVER, mResultReceiver);

    // Pass the location data as an extra to the service.
    intent.putExtra(AppUtils.LocationConstants.LOCATION_DATA_EXTRA, mLocation);

    // Start the service. If the service isn't already running, it is instantiated and started
    // (creating a process for it if needed); if it is running then it remains running. The
    // service kills itself automatically once all intents are processed.
    startService(intent);
}


      /* private void openAutocompleteActivity() {
    try {
        // The autocomplete activity requires Google Play Services to be available. The intent
        // builder checks this and throws an exception if it is not the case.
        Intent intent = new PlaceAutocomplete.IntentBuilder(PlaceAutocomplete.MODE_FULLSCREEN)
                .build(this);
        startActivityForResult(intent, REQUEST_CODE_AUTOCOMPLETE);
    } catch (GooglePlayServicesRepairableException e) {
        // Indicates that Google Play Services is either not installed or not up to date. Prompt
        // the user to correct the issue.
        GoogleApiAvailability.getInstance().getErrorDialog(this, e.getConnectionStatusCode(),
                0 /* requestCode *//*).show();
    } catch (GooglePlayServicesNotAvailableException e) {
        // Indicates that Google Play Services is not available and the problem is not easily
        // resolvable.
   /*     String message = "Google Play Services is not available: " +
                GoogleApiAvailability.getInstance().getErrorString(e.errorCode);

        Toast.makeText(mContext, message, Toast.LENGTH_SHORT).show();
    }
}
 */

    /**
    * Called after the autocomplete activity has finished to return its   result.
 */
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    // Check that the result was from the autocomplete widget.
    if (requestCode == REQUEST_CODE_AUTOCOMPLETE) {
        if (resultCode == RESULT_OK) {
   }}}

the error is :

java.lang.AbstractMethodError: abstract method not implemented
                                                                 at com.google.android.gms.common.api.Api$zza.zza(Unknown Source)
                                                                 at com.google.android.gms.common.api.GoogleApiClient$Builder.zza(Unknown Source)
                                                                 at com.google.android.gms.common.api.GoogleApiClient$Builder.zzarg(Unknown Source)
                                                                 at com.google.android.gms.common.api.GoogleApiClient$Builder.build(Unknown Source)
                                                                 at com.wneet.white.services.SelectEndPoint.buildGoogleApiClient(SelectEndPoint.java:252)
                                                                 at com.wneet.white.services.SelectEndPoint.onCreate(SelectEndPoint.java:118)
                                                                 at android.app.Activity.performCreate(Activity.java:5581)
                                                                 at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1093)
                                                                 at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2483)
                                                                 at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2578)
                                                                 at android.app.ActivityThread.access$900(ActivityThread.java:170)
                                                                 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1317)
                                                                 at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                 at android.os.Looper.loop(Looper.java:146)
                                                                 at android.app.ActivityThread.main(ActivityThread.java:5727)
                                                                 at java.lang.reflect.Method.invokeNative(Native Method)
                                                                 at java.lang.reflect.Method.invoke(Method.java:515)
                                                                 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1291)
                                                                 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1107)
                                                                 at dalvik.system.NativeStart.main(Native Method)

Doing a clean of the project fixed a similar problem for me; it might work for you, too. Here is the error that I had:

FATAL EXCEPTION: IntentService[SyncService]
                  Process: ie.eureka.moveitmobileandroid, PID: 22234
                  java.lang.AbstractMethodError: abstract method "java.util.List .manager.interfaces.WalkAroundCheckAnswers_YesNoManagerInterface.getListOfWalkAroundCheckAnswers_YesNoFromAttempt(ie.eureka.moveitmobileandroid.data.dao.WalkAroundCheckAttempt)"
                      at ie.eureka.moveitmobileandroid.services.networksync.SyncWalkAroundCheckAttempts.syncWithDatabase(SyncWalkAroundCheckAttempts.java:94)
                      at ie.eureka.moveitmobileandroid.services.networksync.SyncWalkAroundCheckAttempts.sync(SyncWalkAroundCheckAttempts.java:57)
                      at ie.eureka.moveitmobileandroid.services.SyncService.onHandleIntent(SyncService.java:32)
                      at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:66)
                      at android.os.Handler.dispatchMessage(Handler.java:102)
                      at android.os.Looper.loop(Looper.java:148)
                      at android.os.HandlerThread.run(HandlerThread.java:61)

java.lang.AbstractMethodError: abstract method not implemented , i got this problem,anyone can help me? thx! Fatal Exception: java.lang. AbstractMethodError: abstract method not implemented at� This failure happens only on 1st start of application compiled in release mode with self-signet certificate (our staging server) proguard is enabled. it doesn't happen in development version (debug). the next starts of the application works fine (to reproduce we have to uninstall then install then start). stacktrace somewhere in SDK: java.lang.AbstractMethodError: abstract method not

java.lang.AbstractMethodError: abstract method not , on test step I have this error on 8 devices. On Android 5.1+ works good. java. lang.AbstractMethodError: abstract method not implemente Process: com.firebase.sfvehicles, PID: 16873 java.lang.AbstractMethodError: abstract method not implemented at com.firebase.client.android.AndroidPlatform.newRunLoop

Seems you have at dependencies different versions of play-services-base library and library which depends of it, for ex in my case it was due to

implementation "com.google.android.gms:play-services-base:17.0.0"

and

implementation "com.google.firebase:firebase-messaging:20.1.0"

and at top gradle file I had this:

allprojects {
  configurations.all {
   resolutionStrategy {
     failOnVersionConflict()
     force "com.google.android.gms:play-services-base:17.0.0"
   }
  }
}

to fix it I just changed ver of play-services-base at top-level gradle file

...
force "com.google.android.gms:play-services-base:17.1.0"
...

java.lang.AbstractMethodError, So, just as in the example above, the programmer calls an abstract, not implemented method (without knowledge of its abstractness), and he is� A close look at the Java AbstractMethodError, with functional code samples showing how such errors might be thrown during runtime execution.

In my case in release mode I got a message like "java.lang.AbstractMethodError: abstract method "a.b.c.d.e f.g.h.i.j$a.b (android.content.Intent)". I think, in line startActivity(Intent(context!!, ParametersActivity::class.java)).

What I made before: I added an activity "ParametersActivity" to debug branch, then switched to release and added an empty class "ParametersActivity". See Using Non-Production Activity for Testing with Android Studio and Use a set of class and resource only in debug mode with gradle. I wanted to add this activity only in debug mode and open it when testing.

Probably I made a mistake somewhere, but I put "ParametersActivity" not in release branch, but in main. So, a program compiled and launched and raised this exception. Then I moved this empty class from main to release, rebuilt, the exception disappeared.

AbstractMethodError: abstract method not implemented, works fine (to reproduce we have to uninstall then install then start). stacktrace somewhere in SDK: java.lang.AbstractMethodError: abstract method not implemented at com.amazon.device.messaging. onHandleIntent( ADMMessageHandlerBase.java:66) at android.app. What could be the problem? :(. Got issue on specific android device Acra version used : 4.6.2 Android version : 4.2.1 Device :Micromax A210 Content Type : application/json Here is the stack trace java.lang.AbstractMethodError: abstract method not implemented at org.ac

AbstractMethodError (Java Platform SE 8 ), java.lang.AbstractMethodError. All Implemented Interfaces: Serializable Thrown when an application tries to call an abstract method. Normally, this error is� java.lang.AbstractMethodError: abstract method "void io.flutter.plugin.platform.PlatformView.onInputConnectionLocked()" #40126 Closed AlexVincent525 opened this issue Sep 10, 2019 · 41 comments

Developers, ERROR - Android 3.2 and older - AbstractMethodError: abstract method not Method.invokeNative(Method.java) at java.lang.reflect. java.lang.AbstractMethodError; All Implemented Interfaces: definition of some class has incompatibly changed since the currently executing method was last

GlideV4 reports java.lang.AbstractMethodError: abstract method , AbstractMethodError: abstract method "void com.bumptech.glide.module. solve : 1、Build ——》cleanProject; 2. To add an AppGlideModule class: The method defined in the abstract class, there is no concrete implementation method ,� To use an abstract method, you need to inherit it by extending its class and provide implementation to it. A class which contains 0 or more abstract methods is known as abstract class. If it contains at least one abstract method, it must be declared abstract. Extending an abstract class

Comments
  • Can you post the error please.
  • AbstractMethodError is thrown for which method access? can you check logs
  • You are using Interface so you have to impliment interface abstract method
  • I edited the Question with logcat
  • If you still have that problem, check your build.gradle file. All com.google.android.gms libraries should be in the same version (that was the case for me). I guess the newest would be the safest.
  • Thanks, I've got this problem also. Somehow incremental build skipped the problematic file. Doing a rebuild fixes it.