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Android-Netzwerk ist nicht erreichbar - ENETUNREACH

Ich habe einen seltsamen Fehler in meiner Android-Anwendung. Ich teste mit einem lokalen Server mit Xampp. Die App soll Datensätze aus einer Datenbank abrufen und im Telefon speichern.

Die Sache ist, ich habe die App in einem Motorola XT550 mit Android 2.3.6 und in meiner Sony Xperia S mit Android 4.0.4 getestet und die App funktioniert einwandfrei. Aber wenn ich es mit einem Samsung Fame mit Android 4.1.2 (Handy meines Kunden) teste, funktioniert es nicht.

Hier ist das LogCat:

02-22 04:48:33.001    3961-3976/com.sistel.manantiales W/System.err﹕ at org.Apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.Java:183)
02-22 04:48:33.001    3961-3976/com.sistel.manantiales W/System.err﹕ at org.Apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.Java:164)
02-22 04:48:33.001    3961-3976/com.sistel.manantiales W/System.err﹕ at org.Apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.Java:119)
02-22 04:48:33.011    3961-3976/com.sistel.manantiales W/System.err﹕ at org.Apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.Java:360)
02-22 04:48:33.011    3961-3976/com.sistel.manantiales W/System.err﹕ at org.Apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.Java:670)
02-22 04:48:33.011    3961-3976/com.sistel.manantiales W/System.err﹕ at org.Apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.Java:509)
02-22 04:48:33.011    3961-3976/com.sistel.manantiales W/System.err﹕ at org.Apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.Java:487)
02-22 04:48:33.011    3961-3976/com.sistel.manantiales W/System.err﹕ at com.sistel.manantiales.SyncActivity$DatabaseSync.updateDatabase(SyncActivity.Java:198)
02-22 04:48:33.011    3961-3976/com.sistel.manantiales W/System.err﹕ at com.sistel.manantiales.SyncActivity$DatabaseSync.doInBackground(SyncActivity.Java:165)
02-22 04:48:33.011    3961-3976/com.sistel.manantiales W/System.err﹕ at com.sistel.manantiales.SyncActivity$DatabaseSync.doInBackground(SyncActivity.Java:147)
02-22 04:48:33.011    3961-3976/com.sistel.manantiales W/System.err﹕ at Android.os.AsyncTask$2.call(AsyncTask.Java:287)
02-22 04:48:33.011    3961-3976/com.sistel.manantiales W/System.err﹕ at Java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.Java:305)
02-22 04:48:33.011    3961-3976/com.sistel.manantiales W/System.err﹕ at Java.util.concurrent.FutureTask.run(FutureTask.Java:137)
02-22 04:48:33.021    3961-3976/com.sistel.manantiales W/System.err﹕ at Java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.Java:1076)
02-22 04:48:33.021    3961-3976/com.sistel.manantiales W/System.err﹕ at Java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.Java:569)
02-22 04:48:33.021    3961-3976/com.sistel.manantiales W/System.err﹕ at Java.lang.Thread.run(Thread.Java:856)
02-22 04:48:33.021    3961-3976/com.sistel.manantiales W/System.err﹕ Caused by: Java.net.ConnectException: failed to connect to /10.0.0.7 (port 80) after 15000ms: connect failed: ENETUNREACH (Network is unreachable)
02-22 04:48:33.021    3961-3976/com.sistel.manantiales W/System.err﹕ at libcore.io.IoBridge.connect(IoBridge.Java:114)
02-22 04:48:33.031    3961-3976/com.sistel.manantiales W/System.err﹕ at Java.net.PlainSocketImpl.connect(PlainSocketImpl.Java:192)
02-22 04:48:33.031    3961-3976/com.sistel.manantiales W/System.err﹕ at Java.net.PlainSocketImpl.connect(PlainSocketImpl.Java:459)
02-22 04:48:33.031    3961-3976/com.sistel.manantiales W/System.err﹕ at Java.net.Socket.connect(Socket.Java:842)
02-22 04:48:33.031    3961-3976/com.sistel.manantiales W/System.err﹕ at org.Apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.Java:119)
02-22 04:48:33.031    3961-3976/com.sistel.manantiales W/System.err﹕ at org.Apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.Java:144)
02-22 04:48:33.031    3961-3976/com.sistel.manantiales W/System.err﹕ ... 15 more
02-22 04:48:33.041    3961-3976/com.sistel.manantiales W/System.err﹕ Caused by: libcore.io.ErrnoException: connect failed: ENETUNREACH (Network is unreachable)
02-22 04:48:33.081    1216-1467/? V/AudioFlinger﹕ presentationComplete() session 35 complete: framesWritten 940032
02-22 04:48:33.081    1216-1467/? V/AudioFlinger﹕ TrackBase::reset
02-22 04:48:33.091    3961-3976/com.sistel.manantiales W/System.err﹕ at libcore.io.Posix.connect(Native Method)
02-22 04:48:33.091    3961-3964/com.sistel.manantiales D/dalvikvm﹕ GC_CONCURRENT freed 197K, 13% free 7645K/8775K, paused 16ms+16ms, total 54ms
02-22 04:48:33.091    3961-3976/com.sistel.manantiales W/System.err﹕ at libcore.io.BlockGuardOs.connect(BlockGuardOs.Java:85)
02-22 04:48:33.091    3961-3976/com.sistel.manantiales W/System.err﹕ at libcore.io.IoBridge.connectErrno(IoBridge.Java:144)
02-22 04:48:33.101    3961-3976/com.sistel.manantiales W/System.err﹕ at libcore.io.IoBridge.connect(IoBridge.Java:112)
02-22 04:48:33.101    3961-3976/com.sistel.manantiales W/System.err﹕ ... 20 more
02-22 04:48:33.101    1577-1800/? D/PowerManagerService﹕ acquireDVFSLockLocked : type : DVFS_MIN_LIMIT  frequency : 999999  uid : 1000  pid : 1577  tag : ActivityManager
02-22 04:48:33.101    1577-1800/? W/ActivityManager﹕ mDVFSLock.acquire()
02-22 04:48:33.141    1577-1800/? D/BatteryStatsImpl﹕ ++++++xy WakeLock start : pid=1577, name=, type=0, tid=1800, pid=1577, pName=null
02-22 04:48:33.161    1577-1588/? D/WindowManager﹕ PhoneWindowManager: focusChangedLw
02-22 04:48:33.161    1577-1588/? D/WindowManager﹕ updateReadingMode
02-22 04:48:33.161    1577-1588/? D/KeyguardViewMediator﹕ setHidden false
02-22 04:48:33.161    1577-1588/? D/WindowManager﹕ mInputFocus is not null.
02-22 04:48:33.161    1577-1588/? D/WindowManager﹕ mInputFocus is not null.
02-22 04:48:33.161    1577-1588/? D/WindowManager﹕ mInputFocus is not null.
02-22 04:48:33.191    3961-3961/com.sistel.manantiales D/AbsListView﹕ Get MotionRecognitionManager
02-22 04:48:33.211    3961-3976/com.sistel.manantiales W/dalvikvm﹕ threadid=11: thread exiting with uncaught exception (group=0x411ba2a0)
02-22 04:48:33.211    1577-1810/? D/WindowManager﹕ mInputFocus is not null.
02-22 04:48:33.211    3961-3976/com.sistel.manantiales E/AndroidRuntime﹕ FATAL EXCEPTION: AsyncTask #1
        Java.lang.RuntimeException: An error occured while executing doInBackground()
        at Android.os.AsyncTask$3.done(AsyncTask.Java:299)
        at Java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.Java:273)
        at Java.util.concurrent.FutureTask.setException(FutureTask.Java:124)
        at Java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.Java:307)
        at Java.util.concurrent.FutureTask.run(FutureTask.Java:137)
        at Java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.Java:1076)
        at Java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.Java:569)
        at Java.lang.Thread.run(Thread.Java:856)
        Caused by: Java.lang.IllegalArgumentException: HTTP entity may not be null
        at org.Apache.http.util.EntityUtils.toString(EntityUtils.Java:110)
        at org.Apache.http.util.EntityUtils.toString(EntityUtils.Java:146)
        at com.sistel.manantiales.SyncActivity$DatabaseSync.updateDatabase(SyncActivity.Java:217)
        at com.sistel.manantiales.SyncActivity$DatabaseSync.doInBackground(SyncActivity.Java:165)
        at com.sistel.manantiales.SyncActivity$DatabaseSync.doInBackground(SyncActivity.Java:147)
        at Android.os.AsyncTask$2.call(AsyncTask.Java:287)
        at Java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.Java:305)

Und hier ist mein Code:

public class DatabaseSync extends AsyncTask<String, Void, Boolean> {

        @Override
        protected Boolean doInBackground(String... url) {

            try {
                clientDataSource.open();
            } catch (SQLException e) {
                e.printStackTrace();
            }

            try {
                movementDataSource.open();
            } catch (SQLException e) {
                e.printStackTrace();
            }

            clientDataSource.deleteAllClients();
            updateDatabase(url[0]);

            return null;
        }

        @Override
        protected void onPostExecute(Boolean bool) {
            super.onPostExecute(bool);
        }

        public void updateDatabase(String url) {

                ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
                nameValuePairs.add(new BasicNameValuePair("Operation", "Download"));
                nameValuePairs.add(new BasicNameValuePair("Value", "Download"));

                HttpParams httpParams = new BasicHttpParams();

                HttpConnectionParams.setConnectionTimeout(httpParams, 15000);
                HttpConnectionParams.setSoTimeout(httpParams, 15000);

            HttpClient httpClient = new DefaultHttpClient(httpParams);
            HttpPost httpPost = new HttpPost(url);

            try {
                httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }

            HttpResponse httpResponse = null;

            try {
                httpResponse = httpClient.execute(httpPost);
            } catch (IOException e) {
                e.printStackTrace();
            }

            HttpEntity httpEntity = null;

            try {
                httpEntity = httpResponse.getEntity();
            }catch (NullPointerException e) {

                Intent intent = new Intent(getApplicationContext(), MainActivity.class);
                startActivity(intent);

            }


            String result = "empty";
            try {
                result = EntityUtils.toString(httpEntity);
            } catch (IOException e) {
                e.printStackTrace();
            }

            JSONObject jsonObject = null;
            try {
                jsonObject = new JSONObject(result);
            } catch (JSONException e) {
                e.printStackTrace();
            }
            JSONArray jsonClients = null;

            try {
                jsonClients =  jsonObject.getJSONArray("clients");
            } catch (JSONException e) {
                e.printStackTrace();
            }

            long id = 0;
            String name;
            String address;
            String locality;
            long bonus = 0;
            double price = 0.0;
            double prev_balance = 0.0;
            double balance = 0.0;
            long prev_bottles = 0;
            long bottles = 0;
            String update_date;
            String sync_date;

            for(int i = 0; i < jsonClients.length(); i++) {
                JSONObject json = null;
                try {
                    json = jsonClients.getJSONObject(i);

                    String s_id = new String(Base64.decode(json.get("id").toString(),Base64.DEFAULT));
                    name = new String(Base64.decode(json.get("name").toString(),Base64.DEFAULT));
                    address = new String(Base64.decode(json.get("address").toString(), Base64.DEFAULT));
                    locality = new String(Base64.decode(json.get("locality").toString(), Base64.DEFAULT));
                    String s_bonus = new String(Base64.decode(json.get("bonus").toString(), Base64.DEFAULT));
                    String s_price = new String(Base64.decode(json.get("price").toString(), Base64.DEFAULT));
                    String s_prev_balance = new String(Base64.decode(json.get("prev_balance").toString(), Base64.DEFAULT));
                    String s_balance = new String(Base64.decode(json.get("balance").toString(), Base64.DEFAULT));
                    String s_prev_bottles = new String(Base64.decode(json.get("prev_bottles").toString(), Base64.DEFAULT));
                    String s_bottles = new String(Base64.decode(json.get("bottles").toString(), Base64.DEFAULT));
                    update_date = new String(Base64.decode(json.get("update_date").toString(), Base64.DEFAULT));
                    sync_date = new String(Base64.decode(json.get("sync_date").toString(), Base64.DEFAULT));

                    id = Long.parseLong(s_id);
                    bonus = Long.parseLong(s_bonus);
                    price = Double.parseDouble(s_price);
                    prev_balance = Double.parseDouble(s_prev_balance);
                    balance = Double.parseDouble(s_balance);
                    prev_bottles = Long.parseLong(s_prev_bottles);
                    bottles = Long.parseLong(s_bottles);

                    Client client = new Client(id, name, address, locality, bonus, price,
                            prev_balance, balance, prev_bottles, bottles, update_date, sync_date);

                    clientDataSource.insertClient(client);

                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }

            Intent intent = new Intent(getApplicationContext(), MainActivity.class);
            startActivity(intent);

        }

    }
16

Ich habe herausgefunden, was das Problem war! Das Samsung Fame war nicht mit dem Wi-Fi verbunden.

46

Sie können auch eine Prüfung für die Internetverbindung hinzufügen, bevor Sie eine Anfrage stellen, damit der Benutzer das Internet nicht kennenlernen kann.

Verwenden Sie den folgenden Code und wenn falsch zurückgegeben wird, zeigen Sie Toast/Alert.

private boolean isNetworkAvailable() {
ConnectivityManager connectivityManager 
      = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
return activeNetworkInfo != null && activeNetworkInfo.isConnected();
}
8
Swetank

Haben Sie einen Fall, wenn meine App eine Verbindung herstellt, deaktivieren Sie wifi> app crash und kann nicht in den catch-Befehl Exception gehen.

1
Tran Huu Phuoc

bitte überprüfen Sie die Internet/WiFi-Verbindung auf dem Gerät

0
Raj K