Android 4.0.3上的NetworkOnMainThreadException

我有一個intentservice將數據從手機上傳到我的服務器。每當網絡連接可用時，我都從廣播接收器啓動它。這一切工作正常，但當我通過Android 4.0.3模擬器測試它給strictmode錯誤android.os.NetworkOnMainThreadException。這就像這個網絡工作是在主線程上，但據我所知intentservice已經使工作線程。我發現這個鏈接以及http://code.google.com/p/android/issues/detail?id=23495它說移動網絡作業到後臺線程。工作線程不是後臺線程嗎？Android 4.0.3上的NetworkOnMainThreadException

編輯：這是我的廣播接收器。

public void onReceive(Context context, Intent intent) { 
    final String UploadingItems = "paUploadingItems"; 
    final String preferencesFileName = "paSettings"; 

    SharedPreferences sharedPref; 
    String fileQueque; 

    if(isNetworkAvailable(context)){   

     sharedPref = context.getSharedPreferences(preferencesFileName,0); 
     fileQueque = sharedPref.getString(UploadingItems, ""); 
     Log.d(TAG, "quque"+fileQueque); 
     if(fileQueque.length() > 0){ 

       Intent intentUpdater = new Intent(context, updaterService.class);    
       intentUpdater.putExtra("processMode", 6); 
       intentUpdater.putExtra("fileq", fileQueque.toString()); 
       context.startService(intentUpdater); 

      } 
    }  

} 

private boolean isNetworkAvailable(Context context){ 
    ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); 
    NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();  
    Log.d(TAG, activeNetworkInfo.getTypeName()); 
    return (activeNetworkInfo != null && activeNetworkInfo.isAvailable() && activeNetworkInfo.isConnected());  

}

這是我在logcat中看到的錯誤：

04-17 15:28:58.114: E/AndroidRuntime(574): FATAL EXCEPTION: main 
04-17 15:28:58.114: E/AndroidRuntime(574): java.lang.RuntimeException: Unable to start  receiver org.test.dairy.OnNetworkReceiver: android.os.NetworkOnMainThreadException 
04-17 15:28:58.114: E/AndroidRuntime(574): at android.app.ActivityThread.handleReceiver(ActivityThread.java:2126) 
04-17 15:28:58.114: E/AndroidRuntime(574): at android.app.ActivityThread.access$1500(ActivityThread.java:123) 
04-17 15:28:58.114: E/AndroidRuntime(574): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1197) 
04-17 15:28:58.114: E/AndroidRuntime(574): at android.os.Handler.dispatchMessage(Handler.java:99) 
04-17 15:28:58.114: E/AndroidRuntime(574): at android.os.Looper.loop(Looper.java:137) 
04-17 15:28:58.114: E/AndroidRuntime(574): at android.app.ActivityThread.main(ActivityThread.java:4424) 
04-17 15:28:58.114: E/AndroidRuntime(574): at java.lang.reflect.Method.invokeNative(Native Method) 
04-17 15:28:58.114: E/AndroidRuntime(574): at java.lang.reflect.Method.invoke(Method.java:511) 
04-17 15:28:58.114: E/AndroidRuntime(574): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
04-17 15:28:58.114: E/AndroidRuntime(574): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
04-17 15:28:58.114: E/AndroidRuntime(574): at dalvik.system.NativeStart.main(Native Method) 
04-17 15:28:58.114: E/AndroidRuntime(574): Caused by: android.os.NetworkOnMainThreadException 
04-17 15:28:58.114: E/AndroidRuntime(574): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1099) 
04-17 15:28:58.114: E/AndroidRuntime(574): at java.net.InetAddress.lookupHostByName(InetAddress.java:391) 
04-17 15:28:58.114: E/AndroidRuntime(574): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:242) 
04-17 15:28:58.114: E/AndroidRuntime(574): at java.net.InetAddress.getAllByName(InetAddress.java:220) 
04-17 15:28:58.114: E/AndroidRuntime(574): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:71) 
04-17 15:28:58.114: E/AndroidRuntime(574): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:50) 
04-17 15:28:58.114: E/AndroidRuntime(574): at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:351) 
04-17 15:28:58.114: E/AndroidRuntime(574): at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:86) 
04-17 15:28:58.114: E/AndroidRuntime(574): at libcore.net.http.HttpConnection.connect(HttpConnection.java:128) 
04-17 15:28:58.114: E/AndroidRuntime(574): at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:308) 
04-17 15:28:58.114: E/AndroidRuntime(574): at libcore.net.http.HttpEngine.connect(HttpEngine.java:303) 
04-17 15:28:58.114: E/AndroidRuntime(574): at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:282) 
04-17 15:28:58.114: E/AndroidRuntime(574): at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:232) 
04-17 15:28:58.114: E/AndroidRuntime(574): at libcore.net.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:80) 
04-17 15:28:58.114: E/AndroidRuntime(574): at libcore.net.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:188) 
04-17 15:28:58.114: E/AndroidRuntime(574): at org.test.dairy.OnNetworkReceiver.transferData(OnNetworkReceiver.java:101) 
04-17 15:28:58.114: E/AndroidRuntime(574): at org.test.dairy.OnNetworkReceiver.onReceive(OnNetworkReceiver.java:57) 
04-17 15:28:58.114: E/AndroidRuntime(574): at android.app.ActivityThread.handleReceiver(ActivityThread.java:2119) 
04-17 15:28:58.114: E/AndroidRuntime(574): ... 10 more

來源

2012-04-17 Marjan

你的廣播接收器是什麼？任何網絡IO？ – SeanPONeil 2012-04-17 16:44:13

是否確定網絡錯誤來自您的服務，而不是來自您的活動？ – Shubhayu 2012-04-17 16:54:23

如果您希望我們評論您的實施，請發佈您的代碼。 – CommonsWare 2012-04-17 16:56:13

你isNetworkAvailable（）網絡的主UI線程上I/O法檢查和Android認爲阻塞。我只是將請求發送到IntentService而不檢查Activity中的連接性，並讓IntentService引發異常，並在Activity無法建立連接時回報給Activity。

來源

2012-04-17 17:17:42 SeanPONeil

謝謝，它的解決:) – Marjan 2012-04-17 23:36:37

將代碼移入IntentService。廣播接收器的onReceive方法在UI線程上運行，網絡代碼導致它崩潰。簡單地將意圖重定向到IntentService，你應該沒問題。

這使代碼也更簡單。接收器並不是真正意義上的複雜邏輯，它們可以將消息從系統重定向到應用程序。服務是爲了在後臺完成繁重的工作。

來源

2012-04-17 17:21:42

是的，謝謝我把它移到intentservice :) – Marjan 2012-04-17 23:37:02

Android 4.0.3上的NetworkOnMainThreadException

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