only synch if cert4android service is available.

app/src/main/java/it/niedermann/owncloud/notes/persistence/NoteSQLiteOpenHelper.java

@@ -1,10 +1,14 @@
 package it.niedermann.owncloud.notes.persistence;
 
+import android.content.ComponentName;
 import android.content.ContentValues;
 import android.content.Context;
+import android.content.Intent;
+import android.content.ServiceConnection;
 import android.database.Cursor;
 import android.database.sqlite.SQLiteDatabase;
 import android.database.sqlite.SQLiteOpenHelper;
+import android.os.IBinder;
 import android.util.Log;
 
 import java.text.ParseException;
@@ -16,9 +20,10 @@ import java.util.List;
 import java.util.Locale;
 import java.util.Map;
 
+import at.bitfire.cert4android.CustomCertService;
+import it.niedermann.owncloud.notes.model.CloudNote;
 import it.niedermann.owncloud.notes.model.DBNote;
 import it.niedermann.owncloud.notes.model.DBStatus;
-import it.niedermann.owncloud.notes.model.CloudNote;
 import it.niedermann.owncloud.notes.util.ICallback;
 import it.niedermann.owncloud.notes.util.NoteUtil;
 
@@ -56,6 +61,7 @@ public class NoteSQLiteOpenHelper extends SQLiteOpenHelper {
         this.context = context.getApplicationContext();
         serverSyncHelper = NoteServerSyncHelper.getInstance(this);
         //recreateDatabase(getWritableDatabase());
+        context.bindService(new Intent(context, CustomCertService.class), certService, Context.BIND_AUTO_CREATE);
     }
 
     public static NoteSQLiteOpenHelper getInstance(Context context) {
@@ -69,6 +75,26 @@ public class NoteSQLiteOpenHelper extends SQLiteOpenHelper {
         return serverSyncHelper;
     }
 
+    private final ServiceConnection certService = new ServiceConnection() {
+        @Override
+        public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
+            getNoteServerSyncHelper().setCert4androidReady(true);
+        }
+
+        @Override
+        public void onServiceDisconnected(ComponentName componentName) {
+            getNoteServerSyncHelper().setCert4androidReady(false);
+        }
+    };
+
+    @Override
+    protected void finalize() throws Throwable {
+        super.finalize();
+        if (context != null && certService != null) {
+            context.unbindService(certService);
+        }
+    }
+
     /**
      * Creates initial the Database
      *

app/src/main/java/it/niedermann/owncloud/notes/persistence/NoteServerSyncHelper.java

@@ -1,13 +1,16 @@
 package it.niedermann.owncloud.notes.persistence;
 
 import android.content.BroadcastReceiver;
+import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.content.ServiceConnection;
 import android.content.SharedPreferences;
 import android.net.ConnectivityManager;
 import android.net.NetworkInfo;
 import android.os.AsyncTask;
+import android.os.IBinder;
 import android.preference.PreferenceManager;
 import android.util.Log;
 import android.widget.Toast;
@@ -22,6 +25,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
+import at.bitfire.cert4android.CustomCertManager;
 import it.niedermann.owncloud.notes.R;
 import it.niedermann.owncloud.notes.android.activity.SettingsActivity;
 import it.niedermann.owncloud.notes.model.CloudNote;
@@ -75,6 +79,16 @@ public class NoteServerSyncHelper {
         }
     };
 
+    private boolean cert4androidReady = false;
+
+    public boolean isCert4androidReady() {
+        return cert4androidReady;
+    }
+
+    public void setCert4androidReady(boolean cert4androidReady) {
+        this.cert4androidReady = cert4androidReady;
+    }
+
     // current state of the synchronization
     private boolean syncActive = false;
     private boolean syncScheduled = false;
@@ -110,7 +124,7 @@ public class NoteServerSyncHelper {
      * @return true if sync is possible, otherwise false.
      */
     public boolean isSyncPossible() {
-        return networkConnected && isConfigured(appContext);
+        return networkConnected && isConfigured(appContext) && isCert4androidReady();
     }
 
 

app/src/main/java/it/niedermann/owncloud/notes/util/SupportUtil.java

@@ -16,7 +16,6 @@ import java.net.URL;
 import java.security.KeyManagementException;
 import java.security.NoSuchAlgorithmException;
 
-import javax.net.ssl.HostnameVerifier;
 import javax.net.ssl.HttpsURLConnection;
 import javax.net.ssl.SSLContext;
 import javax.net.ssl.TrustManager;