Ошибка приложения при нажатии уведомления

Question

Получение уведомлений успешно, но при попытке открыть уведомление, используя приведенный ниже код, приложение разбивается. Кажется, это некоторые проблемы с инициализацией. Пожалуйста, помогите

NotificationActivity

public class NotificationActivity extends EzDrawerActivity { 
public static ImageLoader imgLoader; 

private static EzWebPageFragment ezWebPageFragment; 
private static DashboardFragment dashboardFragment; 

private static String Dashboard = EzDrawerActivity.MENU_HOME_Dashboard; 

GcmIntentService gcm; 

@Override 
protected void onResume() { 
    super.onResume(); 
} 

static boolean doInit; 

static public void resetOnLogout() { 
    doInit = false; 
} 

private void doInit() { 
    if (doInit == true) 
     return; 
    doInit = true; 

    if (findViewById(R.id.fragment_container) == null) 
     return; 

    // set Dash board as default/active fragment after login 
    if (gcm.notify.getAction().equalsIgnoreCase("url")) { 
     ezWebPageFragment = new EzWebPageFragment(); 
     mActiveFragment = ezWebPageFragment; 
    } else { 
     dashboardFragment = new DashboardFragment(); 
     mActiveFragment = dashboardFragment; 
    } 
} 

@Override 
protected void onCreate(final Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 

    setContentView(R.layout.activity_main); 

    setToobar(); 

    gcm = new GcmIntentService(); 

    Log.v("DA:onCreate()", "IN... "); 
    doInit(); 

    super.setHomeAsDrawerEnabled(savedInstanceState); 
} 

@Override 
protected void setFragmentByTag(String item) { 

    Log.v("DA:setFragmentByTag()", "Tag : " 
      + (item == null ? "NULL" : item)); 

    // hide keyboard 
    EzUtils.hideKeyBoard(this); 

    if (EzUtils.isNetworkAvailable(this, true)) { 
     if (item == null || item.equals(Dashboard)) { 
      DashboardFragment.setWebPageURL(API.DASHBOARD()); 
      showFragment(dashboardFragment, Dashboard); 
      mTitle = "Dashboard"; 
     } else { 
      EzWebPageFragment.setWebPageURL(gcm.notify.getURL()); 
      showFragment(ezWebPageFragment); 
     } 
    } 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    return super.onOptionsItemSelected(item); 
} 

@Override 
protected void onStart() { 
    super.onStart(); 
    this.setFragmentByTag(mActiveFragmentTag); 
} 

@Override 
public void onPause() { 
    super.onPause(); 
} 

@Override 
public void onDestroy() { 
    super.onDestroy(); 
    Log.v("DA::onDestroy()", "In.."); 
} 

GcmIntentService

public class GcmIntentService extends IntentService { 
public static final int NOTIFICATION_ID = 1; 
public NotificationData notify; 
private NotificationManager mNotificationManager; 
NotificationCompat.Builder builder; 

public GcmIntentService() { 
    super("GcmIntentService"); 
} 

@Override 
protected void onHandleIntent(final Intent intent) { 
    final Bundle extras = intent.getExtras(); 
    final GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this); 
    // The getMessageType() intent parameter must be the intent you received 
    // in your BroadcastReceiver. 
    final String messageType = gcm.getMessageType(intent); 

    if (!extras.isEmpty()) { // has effect of unparcelling Bundle 
     /* 
     * Filter messages based on message type. Since it is likely that 
     * GCM will be extended in the future with new message types, just 
     * 
     * ignore any message types you're not interested in, or that you 
     * don't recognize. 
     */ 
     if (GoogleCloudMessaging.MESSAGE_TYPE_SEND_ERROR 
       .equals(messageType)) { 
      showNotification("Send error: " + extras.toString()); 
     } else if (GoogleCloudMessaging.MESSAGE_TYPE_DELETED 
       .equals(messageType)) { 
      showNotification("Deleted messages on server: " 
        + extras.toString()); 
      // If it's a regular GCM message, do some work. 
     } else if (GoogleCloudMessaging.MESSAGE_TYPE_MESSAGE 
       .equals(messageType)) { 
      // This loop represents the service doing some work. 
      for (int i = 0; i < 5; i++) { 
       Log.i("TAG", "Working... " + (i + 1) + "/5 @ " 
         + SystemClock.elapsedRealtime()); 
       try { 
        Thread.sleep(5000); 
       } catch (final InterruptedException e) { 
       } 
      } 
      Log.i("TAG", 
        "Completed work @ " + SystemClock.elapsedRealtime()); 

      // Post notification of received message. | 
      // the actual message which gets displayed in the notification 
      // bar depending upon some restrictions 

      notify = new NotificationData(extras.getString("message")); 
       showNotification(notify.getDetails()); 

      Log.i("TAG", "Received: " + extras.toString()); 
      Log.i("TAG", "Received URL: " + notify.getAction()); 
     } 
    } 
    // Release the wake lock provided by the WakefulBroadcastReceiver. 
    WakefulBroadcastReceiver.completeWakefulIntent(intent); 
} 

// Put the message into a notification and post it. 
// This is just one simple example of what you might choose to do with 
// a GCM message. 
private void showNotification(String msg) { 
    mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); 


    Intent intent = new Intent(this, NotificationActivity.class); 
    final PendingIntent contentIntent = PendingIntent.getActivity(this, 0, 
      intent, 0); 

    final NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
      this) 
      .setSmallIcon(R.drawable.ic_launcher) 
      .setLargeIcon(
        BitmapFactory.decodeResource(getResources(), 
          R.drawable.ez)) 
      .setContentTitle(getResources().getString(R.string.app_name)) 
      .setAutoCancel(true) 
      .setStyle(new NotificationCompat.BigTextStyle().bigText(msg)) 
      .setContentText(msg); 

    mBuilder.setContentIntent(contentIntent); 
    mNotificationManager.notify(GcmIntentService.NOTIFICATION_ID, 
      mBuilder.build()); 
} 

NotificationData

public class NotificationData { 

final static public String ND_KEY_ACTION = "action"; 

final static public String ND_KEY_DETAILS = "details"; 
final static public String ND_KEY_URL = "url"; 

JSONObject mData; 

public NotificationData(String data) { 
    try { 
     mData = new JSONObject(data); 
    } catch (JSONException e) { 
     // Log 
     mData = new JSONObject(); 
    } 
} 

public String getAction() { 
    String type = mData.optString(NotificationData.ND_KEY_ACTION); 
    return (type == null) ? NotificationData.ND_TYPE_MESG : type; 
} 

public String getDetails() { 
    String details = mData.optString(NotificationData.ND_KEY_DETAILS); 
    return (details == null) ? "" : details; 
} 

public String getURL() { 
    String url = mData.optString(NotificationData.ND_KEY_URL); 
    return (url == null) ? "" : url; 
} 
} 

Ответ:

D/AndroidRuntime(9721): Shutting down VM 
E/AndroidRuntime(9721): FATAL EXCEPTION: main 
E/AndroidRuntime(9721): Process: com.package, PID: 9721 
E/AndroidRuntime(9721): java.lang.RuntimeException: Unable to start activity                                           ComponentInfo{com.package/com.package.gcm.NotificationActivity}:  java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.package.gcm.NotificationData.getAction()' on a null  object reference 
E/AndroidRuntime(9721):at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3124) 
E/AndroidRuntime(9721):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3233) 
E/AndroidRuntime(9721):  at android.app.ActivityThread.access$1000(ActivityThread.java:197) 
E/AndroidRuntime(9721):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1656) 
E/AndroidRuntime(9721):  at android.os.Handler.dispatchMessage(Handler.java:102) 
E/AndroidRuntime(9721):  at android.os.Looper.loop(Looper.java:145) 
E/AndroidRuntime(9721):  at android.app.ActivityThread.main(ActivityThread.java:6873) 
E/AndroidRuntime(9721):  at java.lang.reflect.Method.invoke(Native Method) 
E/AndroidRuntime(9721):  at java.lang.reflect.Method.invoke(Method.java:372) 
E/AndroidRuntime(9721):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404) 
E/AndroidRuntime(9721):  at  com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199) 
E/AndroidRuntime(9721): Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.package.gcm.NotificationData.getAction()' on a null object reference 
E/AndroidRuntime(9721):  at com.package.gcm.NotificationActivity.doInit(NotificationActivity.java:108) 
E/AndroidRuntime(9721):  at com.package.gcm.NotificationActivity.onCreate(NotificationActivity.java:159) 
E/AndroidRuntime(9721):  at android.app.Activity.performCreate(Activity.java:6550) 
E/AndroidRuntime(9721):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1120) 
E/AndroidRuntime(9721):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3077) 
E/AndroidRuntime(9721):  ... 10 more 

EzDrawerActivity

protected void showFragment(Fragment fragment, String tag) { 

    Log.e("EDA:showFragment()", "Fragment= " + fragment + ", Tag=" + tag); 
    mActiveFragment = fragment; 
    mActiveFragmentTag = tag; 

    if (mActiveFragment == null) { 
     Log.e("EDA::showFragment()", "Error: Active Fragment is NULL"); 
     return; 
    } 

    FragmentManager fm = getSupportFragmentManager(); 
    FragmentTransaction ft = fm.beginTransaction(); 
    if (mActiveFragmentTag == null) { 
     ft.detach(mActiveFragment); 
     ft.attach(mActiveFragment); 
     ft.replace(R.id.fragment_container, mActiveFragment).commit(); 
    } else { 
     ft.detach(mActiveFragment); 
     ft.attach(mActiveFragment); 
     ft.replace(R.id.fragment_container, mActiveFragment, 
       mActiveFragmentTag).commit(); 
    } 
    // update selected item and title, then close the drawer 
    mListView.setItemChecked(getHighlightedRowIndex(), true); 
} 

Answer 1

Похож справкой строки пуст.

проверить эту линию -

если (. Gcm.notify.getAction() equalsIgnoreCase ("URL"))

Answer 2

Ваш NotificationActivity не делает ничего на самом деле обрабатывать уведомления. Вы также не передаете сообщение (содержание) вместе с намерением, которое вы передаете на ваш PendingIntent, когда вы создали экземпляр объекта Уведомления. Итак, вот изменения, которые вы должны внести в свой метод showNotification(String msg): вместо передачи строки сообщения я передаю весь объект NotificationData в качестве аргумента, а затем добавлю его как extra. Не забудьте изменить NotificationData для реализации Serializable.

showNotification(NotificationData notificationData){ 
    //specify the msg argument as extra in the intent 
    Intent intent = new Intent(this, NotificationActivity.class); 
    //using the method putExtra(String name, Serializable value) 
    intent.putExtra("data", notificationData); 
    final PendingIntent contentIntent = PendingIntent.getActivity(this, 0,   intent, 0); 
    //the rest of your code ... 
} 

Затем обработать ваш Notification в NotificationActivity выполнить следующие действия в onCreate (эти изменения, которые я предлагаю вам сделать - заменить onCreate метод:

protected void onCreate(final Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    setToobar(); 
    //remove/comment out 
    // gcm = new GcmIntentService(); 

    Log.v("DA:onCreate()", "IN... "); 
    super.setHomeAsDrawerEnabled(savedInstanceState); 
    //here is the code to handle the notification data 
    //get the notification intent (which will carry the extras) 
    Intent notificationIntent = getIntent();  
    //see changes I made to your doInit method 
    doInit(notificationIntent); 
} 

Эти изменения я предлагаю к вашему doInit-методу (для обработки уведомлений)

private void doInit(Intent intentData) { 
    if (doInit == true) 
     return; 
    doInit = true; 

    if (findViewById(R.id.fragment_container) == null) 
     return; 
    NotificationData notificationData = null; 
    if(intentData != null){ 
     //get the extra if available 
     notificationData = (NotificationData) intentData.getSerializableExtra("data");  
    } 
    //now you can check for URL, etc: 
    // set Dash board as default/active fragment after login 
    if (notificationData != null && notificationData.getURL().equalsIgnoreCase("url")) { 
     ezWebPageFragment = new EzWebPageFragment(); 
     mActiveFragment = ezWebPageFragment; 
    } else { 
     dashboardFragment = new DashboardFragment(); 
     mActiveFragment = dashboardFragment; 
    } 
} 

Я действительно надеюсь, что это вам поможет. Извините за многие изменения s - но это основано на проблемах, которые я поднял, глядя на ваш код. Пожалуйста, попробуйте и дайте мне знать.