NameNotFoundException在addParentStack

Question

我想建立一個通知，並顯示它，並建立一個堆棧，我所顯示的意圖。但我得到一個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()); 

這是我得到的例外。

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) 

我檢查了包名和類ForecastFragment被放置在包裝，但它是正確的。 有人可以幫助我排序這一個。

Answer 1

片段不是一個組件，不能與Intents一起使用。只有組件（如Activity，Service或BroadcastReceiver）可用於構建Intent。

因此，您的第一行（new Intent(mContext, ForecaseFragment.class)）和addParentStack(ForecastFragment.class)均無效。您需要使用包含該片段的清單中註冊的Activity。