Исключение Null при отправке сообщения

Question

Я добавил новый файл класса под /com.quickblox.q_municate/ui/friends. Я хочу отправить сообщение другому пользователю. Я написал код, используя Quickblox API, код выглядит следующим образом.

public class ChangeDSConfiguration extends Activity{ 

TextView OpenSwitchRelayFor; 
TextView OpenPowerRelayFor; 
TextView PowerRelayCode; 
TextView SwitchRelayCode; 
TextView SecretPassword; 
EditText OpenSwitchRelayForValue; 
EditText OpenPowerRelayForValue; 
EditText PowerRelayCodeValue; 
EditText SwitchRelayCodeValue; 
EditText SecretPasswordValue; 
Button ChangeConfiguration; 

String password; 
String configurationDetails; 
int id; 

public static void start(Context context, int id) { 
    Intent intent = new Intent(context, ChangeDSConfiguration.class); 
    intent.putExtra(QBServiceConsts.USER_ID, id); 
    context.startActivity(intent); 
} 

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

    id = getIntent().getExtras().getInt(QBServiceConsts.USER_ID); 
    Log.e("ChangeConfig", "id = "+id); 


    OpenSwitchRelayFor = (TextView) findViewById(R.id.openSwitchRelayFor); 
    OpenPowerRelayFor = (TextView) findViewById(R.id.openPowerRelayFor); 
    PowerRelayCode = (TextView) findViewById(R.id.powerRelayCode); 
    SwitchRelayCode = (TextView) findViewById(R.id.switchRelayCode); 
    SecretPassword = (TextView) findViewById(R.id.secretPassword); 
    OpenSwitchRelayForValue = (EditText) findViewById(R.id.etOpenSwitchRelayFor); 
    OpenPowerRelayForValue = (EditText) findViewById(R.id.etOpenPowerRelayFor); 
    PowerRelayCodeValue = (EditText) findViewById(R.id.etPowerRelayCode); 
    SwitchRelayCodeValue = (EditText) findViewById(R.id.etSwitchRelayCode); 
    SecretPasswordValue = (EditText) findViewById(R.id.etSecretPassword); 
    ChangeConfiguration = (Button) findViewById(R.id.changeConfiguration); 

    ChangeConfiguration.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      showAskForSecretPasswordDialog(); 
     } 
    }); 
} 

public void showAskForSecretPasswordDialog(){ 
    LayoutInflater inflater = getLayoutInflater(); 
    View view = inflater.inflate(R.layout.layout_enter_password, null); 

    final EditText secret_password; 
    secret_password = (EditText) view.findViewById(R.id.secretPassword); 
    secret_password.setText(""); 
    secret_password.setFocusable(true); 
    AlertDialog.Builder askForPasswordDialog = new AlertDialog.Builder(ChangeDSConfiguration.this); 

    askForPasswordDialog.setView(view); 
    askForPasswordDialog.setCancelable(false); 
    askForPasswordDialog.setPositiveButton("Continue", new DialogInterface.OnClickListener() { 
     @Override 
     public void onClick(DialogInterface dialog, int which) { 
      password = secret_password.getText().toString(); 
      Log.e("FriendsListFragment", "password = " + password); 
      if(password.equals("")){ 
       Toast.makeText(ChangeDSConfiguration.this, "Please enter password before you continue", Toast.LENGTH_LONG).show(); 
       return; 
      }else{ 
       password = "Change Configuration:" + password;  // frame relay code message, with header and relay type 
       sendConfigurartionDetails(password); 
       finish(); 
      } 
     } 
    }); 

    askForPasswordDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() { 
     @Override 
     public void onClick(DialogInterface dialog, int which) { 
      return ; 
     } 
    }); 

    askForPasswordDialog.setTitle(R.string.title_enter_relay_code); 
    askForPasswordDialog.setMessage(R.string.message_enter_relay_code); 
    askForPasswordDialog.show(); 

    return; 
} 

public void sendConfigurartionDetails(String password){ 

    if (!QBChatService.isInitialized()) { 
     Log.e("ChangeConfig", "(!QBChatService.isInitialized())"); 
     QBChatService.init(this); 
    } 

    configurationDetails = password + ":" + getConfigurationDetails(); 
    Log.e("ChangeDSConfig", "configurationDetails = "+configurationDetails); 

    try { 
    QBChatMessage message = new QBChatMessage(); 
    message.setBody(configurationDetails); 

    QBPrivateChatManager privateChatManager = QBChatService.getInstance().getPrivateChatManager(); 
     Log.e(" ChangeDSConfig", "id = "+id); 
    QBPrivateChat privateChat = privateChatManager.getChat(id); 
     Log.e(" ChangeDSConfig", "getChat(id);"); 
    if (privateChat == null) { 
     privateChat = privateChatManager.createChat(id, null); 
     Log.e(" ChangeDSConfig", "Private chat created"); 
    } 

     privateChat.sendMessage(message); 
     Log.e(" ChangeDSConfig", "Power Relay Code sent"); 
    } catch (XMPPException e) { 
     Toast.makeText(ChangeDSConfiguration.this,e.getMessage(), Toast.LENGTH_LONG).show(); 
    } catch (SmackException.NotConnectedException e) { 
     Toast.makeText(ChangeDSConfiguration.this,e.getMessage(), Toast.LENGTH_LONG).show(); 
    } 

} 

public String getConfigurationDetails(){ 

    String str1 = OpenSwitchRelayForValue.getText().toString(); 
    String str2 = OpenPowerRelayForValue.getText().toString(); 
    String str3 = PowerRelayCodeValue.getText().toString(); 
    String str4 = SwitchRelayCodeValue.getText().toString(); 
    String str5 = SecretPasswordValue.getText().toString(); 

    String str6 = str1 + ":" + str2 + ":" + str3 + ":" + str4 + ":" + str5 ; 

    return str6; 
} 
} 

Я получаю исключение Null точка здесь

QBPrivateChat privateChat = privateChatManager.getChat(id); 

Answer 1

Видимо предыдущий вызов возвращает null:

QBChatService.getInstance().getPrivateChatManager(); 

Проверьте getPrivateChatManager() реализацию.