try updating widget several times if no network connection detected

org.fox.ttrss/src/main/java/org/fox/ttrss/widget/WidgetUpdateService.java

@@ -4,6 +4,8 @@ import android.app.Service;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
 import android.os.Build;
 import android.os.Handler;
 import android.os.IBinder;
@@ -29,8 +31,6 @@ public class WidgetUpdateService extends Service {
     public static final int UPDATE_RESULT_ERROR_NEED_CONF = 3;
     public static final int UPDATE_IN_PROGRESS = 4;
 
-    private int m_updateFailures = 0;
-
     @Override
 	public IBinder onBind(Intent intent) {
 		Log.d(TAG, "onBind");
@@ -38,21 +38,49 @@ public class WidgetUpdateService extends Service {
 		return null;
 	}
 
+    protected boolean isNetworkAvailable() {
+        ConnectivityManager cm = (ConnectivityManager)
+                getSystemService(Context.CONNECTIVITY_SERVICE);
+        NetworkInfo networkInfo = cm.getActiveNetworkInfo();
+
+        // if no network is available networkInfo will be null
+        // otherwise check if we are connected
+        if (networkInfo != null && networkInfo.isConnected()) {
+            return true;
+        }
+        return false;
+    }
+
     @Override
     public void onStart(Intent intent, int startId) {
         Log.d(TAG, "onStart");
 
-        if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
-            PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
-            if (pm.isDeviceIdleMode()) {
-                Log.d(TAG, "device in idle mode, bailing out");
-                return;
-            }
-        }
-
         try {
             sendResultIntent(-1, UPDATE_IN_PROGRESS);
 
+            if (!isNetworkAvailable()) {
+                final int retryCount = intent.getIntExtra("retryCount", 0);
+
+                Log.d(TAG, "service update requested but network is not available, try: " + retryCount);
+
+                if (retryCount < 10) {
+                    new Handler().postDelayed(new Runnable() {
+                        @Override
+                        public void run() {
+                            Intent serviceIntent = new Intent(getApplicationContext(), WidgetUpdateService.class);
+                            serviceIntent.putExtra("retryCount", retryCount + 1);
+                            startService(serviceIntent);
+
+                        }
+                    }, 3 * 1000);
+                } else {
+                    sendResultIntent(-1, UPDATE_RESULT_ERROR_OTHER);
+                }
+
+                stopSelf();
+                return;
+            }
+
             m_prefs = PreferenceManager
                     .getDefaultSharedPreferences(getApplicationContext());
 
@@ -77,7 +105,6 @@ public class WidgetUpdateService extends Service {
                                         JsonObject content = result.getAsJsonObject();
 
                                         if (content != null) {
-                                            m_updateFailures = 0;
 
                                             int unread = content.get("unread").getAsInt();
                                             sendResultIntent(unread, UPDATE_RESULT_OK);
@@ -91,7 +118,6 @@ public class WidgetUpdateService extends Service {
                                     Log.d(TAG, "request failed: " + getErrorMessage());
                                 }
 
-                                ++m_updateFailures;
                                 sendResultIntent(-1, UPDATE_RESULT_ERROR_OTHER);
                             }
                         };
@@ -113,7 +139,6 @@ public class WidgetUpdateService extends Service {
                     protected void onLoginFailed(int requestId, ApiRequest ar) {
                         Log.d(TAG, "login failed: " + getString(ar.getErrorMessage()));
 
-                        ++m_updateFailures;
                         sendResultIntent(-1, UPDATE_RESULT_ERROR_LOGIN);
                     }
 
@@ -124,21 +149,15 @@ public class WidgetUpdateService extends Service {
                     }
                 };
 
-                new Handler().postDelayed(new Runnable() {
-                    @Override
-                    public void run() {
                 String login = m_prefs.getString("login", "").trim();
                 String password = m_prefs.getString("password", "").trim();
 
                 loginManager.logIn(getApplicationContext(), 1, login, password);
-                    }
-                }, 2 * 1000);
 
             }
         } catch (Exception e) {
             e.printStackTrace();
 
-            ++m_updateFailures;
             sendResultIntent(-1, UPDATE_RESULT_ERROR_OTHER);
         }
 
@@ -152,7 +171,6 @@ public class WidgetUpdateService extends Service {
         intent.setAction(SmallWidgetProvider.ACTION_UPDATE_RESULT);
         intent.putExtra("resultCode", resultCode);
         intent.putExtra("unread", unread);
-        intent.putExtra("failures", m_updateFailures);
 
         sendBroadcast(intent);