NameNotFoundException in addParentStack

I am trying to build a notification and display it and also build a stack to the intent which I am displaying. But i get a NameNotFoundException.

Intent resultIntent = new Intent(mContext, ForecastFragment.class);

TaskStackBuilder stackBuilder = TaskStackBuilder.create(mContext);
stackBuilder.addParentStack(ForecastFragment.class);
stackBuilder.addNextIntent(resultIntent);
PendingIntent resultPendingIntent = stackBuilder.
                    getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
mBuilder.setContentIntent(resultPendingIntent);
NotificationManager notificationManager =
                    (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(10 ,mBuilder.build());

Here is the exception that I get.

3541-3562/com.example.android.sunshine.app E/AndroidRuntime: FATAL EXCEPTION: SyncAdapterThread-1
          Process: com.example.android.sunshine.app, PID: 3541
          java.lang.IllegalArgumentException: android.content.pm.PackageManager$NameNotFoundException: ComponentInfo{com.example.android.sunshine.app/com.example.android.sunshine.app.ForecastFragment}
             at android.support.v4.app.TaskStackBuilder.addParentStack(TaskStackBuilder.java:247)
             at android.support.v4.app.TaskStackBuilder.addParentStack(TaskStackBuilder.java:226)
             at com.example.android.sunshine.app.sync.SunshineSyncAdapter.notifyWeather(SunshineSyncAdapter.java:526)
             at com.example.android.sunshine.app.sync.SunshineSyncAdapter.getWeatherDataFromJson(SunshineSyncAdapter.java:424)
             at com.example.android.sunshine.app.sync.SunshineSyncAdapter.onPerformSync(SunshineSyncAdapter.java:255)
             at android.content.AbstractThreadedSyncAdapter$SyncThread.run(AbstractThreadedSyncAdapter.java:259)
          Caused by: android.content.pm.PackageManager$NameNotFoundException: ComponentInfo{com.example.android.sunshine.app/com.example.android.sunshine.app.ForecastFragment}
             at android.app.ApplicationPackageManager.getActivityInfo(ApplicationPackageManager.java:314)
             at android.support.v4.app.NavUtils.getParentActivityName(NavUtils.java:301)
             at android.support.v4.app.NavUtils.getParentActivityIntent(NavUtils.java:256)
             at android.support.v4.app.TaskStackBuilder.addParentStack(TaskStackBuilder.java:240)
             at android.support.v4.app.TaskStackBuilder.addParentStack(TaskStackBuilder.java:226) 
             at com.example.android.sunshine.app.sync.SunshineSyncAdapter.notifyWeather(SunshineSyncAdapter.java:526) 
             at com.example.android.sunshine.app.sync.SunshineSyncAdapter.getWeatherDataFromJson(SunshineSyncAdapter.java:424) 
             at com.example.android.sunshine.app.sync.SunshineSyncAdapter.onPerformSync(SunshineSyncAdapter.java:255) 
             at android.content.AbstractThreadedSyncAdapter$SyncThread.run(AbstractThreadedSyncAdapter.java:259)

I checked the Package name and the package where the class ForecastFragment is placed but it is all correct. Can someone please help me out in sorting this one.

Fragments are not a component and cannot be used with Intents. Only components such as an Activity, Service, or BroadcastReceiver can be used to build an Intent.

Therefore your first line (new Intent(mContext, ForecaseFragment.class)) and addParentStack(ForecastFragment.class) both are invalid. You'll need to use the Activity registered in the manifest that contains that Fragment.