Android GPS - Передача рекорда в таблицу лидеров

Question

Я пытаюсь представить рекорды для своих лидеров, но по какой-то причине это не сработает. Приложение не сбой, и в логарифме нет ошибки.

Когда пользователь не войдет в систему, появится всплывающее окно Google Play Игры. В настоящее время, когда пользователь получает новый рекорд, приложение автоматически показывает тост. Так кажется, что моя Asynctask неправильно закодирована?

public class result extends AppCompatActivity implements GoogleApiClient.OnConnectionFailedListener, GoogleApiClient.ConnectionCallbacks{ 

public GoogleApiClient mGoogleApiClient; 
private static int RC_SIGN_IN = 9001; 
private boolean mResolvingConnectionFailure = false; 
private boolean mAutoStartSignInFlow = true; 
private boolean mSignInClicked = false; 

public int HighScore; 

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

    // Create the Google Api Client with access to the Play Games services 
    mGoogleApiClient = new GoogleApiClient.Builder(this) 
      .addConnectionCallbacks(this) 
      .addOnConnectionFailedListener(this) 
      .addApi(Games.API).addScope(Games.SCOPE_GAMES) 
      // add other APIs and scopes here as needed 
      .build(); 

    TextView scoreLabel = (TextView) findViewById(R.id.scoreLabel); 
    TextView highScoreLabel = (TextView) findViewById(R.id.highScoreLabel); 

    int score = getIntent().getIntExtra("SCORE", 0); 
    scoreLabel.setText(score + ""); 

    SharedPreferences settings = getSharedPreferences("HIGH_SCORE", Context.MODE_PRIVATE); 
    HighScore = settings.getInt("HIGH_SCORE", 0); 

    if (score > HighScore) { 
     highScoreLabel.setText("High Score : " + score); 
     submitScore(score); 
     // Update High Score 
     SharedPreferences.Editor editor = settings.edit(); 
     editor.putInt("HIGH_SCORE", score); 
     editor.commit(); 

    } else { 
     highScoreLabel.setText("High Score : " + HighScore); 
    } 

} 

public void tryAgain(View view) { 
    startActivity(new Intent(getApplicationContext(), start.class)); 
} 


// Disable Return Button 
@Override 
public boolean dispatchKeyEvent(KeyEvent event) { 

    if (event.getAction() == KeyEvent.ACTION_DOWN) { 
     switch (event.getKeyCode()) { 
      case KeyEvent.KEYCODE_BACK: 
       return true; 
     } 
    } 

    return super.dispatchKeyEvent(event); 
} 

public class LoadData extends AsyncTask<Void, Void, Void> { 

    ProgressDialog pdLoading = new ProgressDialog(result.this); 
    //declare other objects as per your need 

    @Override 
    protected void onPreExecute() 
    { 
     pdLoading.setMessage("\tSending highscore to leaderboard..."); 
     pdLoading.show(); 

     //do initialization of required objects objects here 
    }; 
    @Override 
    protected Void doInBackground(Void... params) 
    { 
     Games.Leaderboards.submitScoreImmediate(mGoogleApiClient, getString(R.string.leaderboard_top_players), HighScore); 
     //do loading operation here 
     return null; 
    } 
    @Override 
    protected void onPostExecute(Void result) 
    { 
     super.onPostExecute(result); 
     pdLoading.dismiss(); 
    }; 
} 

//Start GPS 
@Override 
public void onConnected(@Nullable Bundle bundle) { 

} 

@Override 
public void onConnectionSuspended(int i) { 
    // Attempt to reconnect 
    mGoogleApiClient.connect(); 
} 

@Override 
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) { 
    if (mResolvingConnectionFailure) { 
     // Already resolving 
     return; 
    } 

    // If the sign in button was clicked or if auto sign-in is enabled, 
    // launch the sign-in flow 
    if (mSignInClicked || mAutoStartSignInFlow) { 
     mAutoStartSignInFlow = false; 
     mSignInClicked = false; 
     mResolvingConnectionFailure = true; 

     // Attempt to resolve the connection failure using BaseGameUtils. 
     // The R.string.signin_other_error value should reference a generic 
     // error string in your strings.xml file, such as "There was 
     // an issue with sign in, please try again later." 
     if (!BaseGameUtils.resolveConnectionFailure(this, 
       mGoogleApiClient, connectionResult, 
       RC_SIGN_IN, getString(R.string.signin_other_error))) { 
      mResolvingConnectionFailure = false; 
     } 
    } 

    // Put code here to display the sign-in button 
} 

public void submitScore(long highscore){ 
    if (mGoogleApiClient.isConnected()){ 
     LoadData task = new LoadData(); 
     task.execute(); 
     //Games.Leaderboards.submitScoreImmediate(mGoogleApiClient, getString(R.string.leaderboard_top_players), highscore); 
    }else{ 
     Toast.makeText(this, "Unable to submit highscore", Toast.LENGTH_SHORT).show(); 
    } 
} 

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

@Override 
protected void onStop() { 
    super.onStop(); 
    mGoogleApiClient.disconnect(); 
} 

protected void onActivityResult(int requestCode, int resultCode, 
           Intent intent) { 
    if (requestCode == RC_SIGN_IN) { 
     mSignInClicked = false; 
     mResolvingConnectionFailure = false; 
     if (resultCode == RESULT_OK) { 
      mGoogleApiClient.connect(); 
     } else { 
      // Bring up an error dialog to alert the user that sign-in 
      // failed. The R.string.signin_failure should reference an error 
      // string in your strings.xml file that tells the user they 
      // could not be signed in, such as "Unable to sign in." 
      BaseGameUtils.showActivityResultError(this, 
        requestCode, resultCode, R.string.signin_failure); 
     } 
    } 
} 
} 

Answer 1

Вы, кажется, объявляя mGoogleAPIClient, но на самом деле не создает экземпляр этого, следовательно, ваш «NullPointerException»

Перед тем, как попытаться использовать mGoogleAPIClient, добавьте следующее, чтобы создать его .....

mGoogleApiClient = new GoogleApiClient.Builder(this) 
    .addConnectionCallbacks(this) 
    .addOnConnectionFailedListener(this) 
    .addApi(Games.API).addScope(Games.SCOPE_GAMES) 
    // add other APIs and scopes here as needed 
    .build(); 

См Here для более подробной информации

Надеется, что это помогает