Fetch contacts on AsyncTask

res/layout/contacts_list.xml

@@ -127,6 +127,15 @@
 			android:fastScrollEnabled="true"
 			android:fastScrollAlwaysVisible="true"
 			android:dividerHeight="1dp" />
+		
+		<ProgressBar
+			android:id="@+id/contactsFetchInProgress"
+			style="?android:attr/progressBarStyle"
+			android:layout_centerHorizontal="true"
+			android:layout_centerVertical="true"
+			android:visibility="gone"
+			android:layout_width="wrap_content"
+			android:layout_height="wrap_content"/>
 
 		<TextView
 			android:id="@+id/noSipContact"

src/org/linphone/ContactsListFragment.java

@@ -48,6 +48,7 @@ import android.widget.EditText;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
 import android.widget.ListView;
+import android.widget.ProgressBar;
 import android.widget.SectionIndexer;
 import android.widget.TextView;
 
@@ -67,6 +68,7 @@ public class ContactsListFragment extends Fragment implements OnClickListener, O
 	private String sipAddressToAdd;
 	private ImageView clearSearchField;
 	private EditText searchField;
+	private ProgressBar contactsFetchInProgress;
 
 	@Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
@@ -141,6 +143,8 @@ public class ContactsListFragment extends Fragment implements OnClickListener, O
 				searchContacts(searchField.getText().toString());
 			}
 		});
+		
+		contactsFetchInProgress = (ProgressBar) view.findViewById(R.id.contactsFetchInProgress);
 
 		return view;
     }
@@ -339,6 +343,11 @@ public class ContactsListFragment extends Fragment implements OnClickListener, O
 			edit.setEnabled(true);
 		}
 		ContactsManager.getInstance().setLinphoneContactsPrefered(onlyDisplayLinphoneContacts);
+		if (contactsList.getCount() == 0) {
+			contactsFetchInProgress.setVisibility(View.VISIBLE);
+		} else {
+			contactsFetchInProgress.setVisibility(View.GONE);
+		}
 	}
 	
 	private void changeContactsToggle() {

src/org/linphone/ContactsManager.java

@@ -19,6 +19,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 package org.linphone;
 
+import java.net.URL;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -39,6 +40,7 @@ import android.content.Context;
 import android.database.ContentObserver;
 import android.database.Cursor;
 import android.net.Uri;
+import android.os.AsyncTask;
 import android.os.Handler;
 import android.os.Message;
 import android.provider.ContactsContract;
@@ -93,11 +95,7 @@ public class ContactsManager extends ContentObserver {
 	
 	@Override
 	public void onChange(boolean selfChange, Uri uri) {
-		List<LinphoneContact> contacts = fetchContactsAsync();
+		fetchContactsAsync();
-		Message msg = handler.obtainMessage();
-		msg.what = CONTACTS_UPDATED;
-		msg.obj = contacts;
-		handler.sendMessage(msg);
 	}
 	
 	public ContentResolver getContentResolver() {
@@ -223,12 +221,12 @@ public class ContactsManager extends ContentObserver {
 			}
 		}
 	}
-
+	
-	public synchronized void fetchContacts() {
+	public synchronized void fetchContactsAsync() {
-		setContacts(fetchContactsAsync());
+		new ContactsFetchTask().execute();
 	}
 	
-	public List<LinphoneContact> fetchContactsAsync() {
+	public List<LinphoneContact> fetchContactsSync() {
 		List<LinphoneContact> contacts = new ArrayList<LinphoneContact>();
 		
 		if (hasContactsAccess()) {
@@ -283,9 +281,22 @@ public class ContactsManager extends ContentObserver {
 		return contacts;
 	}
 	
+	private class ContactsFetchTask extends AsyncTask<Void, Void, List<LinphoneContact>> {
+		protected List<LinphoneContact> doInBackground(Void... params) {
+			return fetchContactsSync();
+		}
+		
+		protected void onPostExecute(List<LinphoneContact> result) {
+			setContacts(result);
+			for (ContactsUpdatedListener listener : contactsUpdatedListeners) {
+				listener.onContactsUpdated();
+			}
+		}
+	}
+	
 	public static String getAddressOrNumberForAndroidContact(ContentResolver resolver, Uri contactUri) {
 		// Phone Numbers
-		String[] projection = new String[]{ ContactsContract.CommonDataKinds.Phone.NUMBER };
+		String[] projection = new String[] { ContactsContract.CommonDataKinds.Phone.NUMBER };
 		Cursor c = resolver.query(contactUri, projection, null, null, null);
 		if (c != null) {
 			while (c.moveToNext()) {

src/org/linphone/LinphoneActivity.java

@@ -1264,7 +1264,7 @@ public class LinphoneActivity extends Activity implements OnClickListener, Conta
 				if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
 					ContactsManager.getInstance().enableContactsAccess();
 				}
-				ContactsManager.getInstance().fetchContacts();
+				ContactsManager.getInstance().fetchContactsAsync();
 				fetchedContactsOnce = true;
 				break;
 			case PERMISSIONS_RECORD_AUDIO_ECHO_CANCELLER:
@@ -1289,7 +1289,7 @@ public class LinphoneActivity extends Activity implements OnClickListener, Conta
 		
 		if (contacts == PackageManager.PERMISSION_GRANTED && !fetchedContactsOnce) {
 			ContactsManager.getInstance().enableContactsAccess();
-			ContactsManager.getInstance().fetchContacts();
+			ContactsManager.getInstance().fetchContactsAsync();
 			fetchedContactsOnce = true;
 		} else {
 			checkAndRequestReadContactsPermission();

src/org/linphone/LinphoneContact.java

@@ -400,7 +400,7 @@ public class LinphoneContact implements Serializable, Comparable<LinphoneContact
 				if (lc.findFriendByAddress(friend.getAddress().asString()) == null) {
 					try {
 						lc.addFriend(friend);
-						ContactsManager.getInstance().fetchContacts();
+						ContactsManager.getInstance().fetchContactsAsync();
 					} catch (LinphoneCoreException e) {
 						Log.e(e);
 					}