Lot of little fix

src/android/org/linphone/ChatFragment.java

@@ -1344,6 +1344,7 @@ public class ChatFragment extends Fragment implements OnClickListener, LinphoneC
 		}
 
 		public void refreshHistory() {
+			if (history == null || chatRoom == null) return;
 			history.clear();
 			LinphoneChatMessage[] messages = chatRoom.getHistory();
 			history.addAll(Arrays.asList(messages));

src/android/org/linphone/HistoryListFragment.java

@@ -427,6 +427,8 @@ public class HistoryListFragment extends Fragment implements OnClickListener, On
 				view.setTag(holder);
 			}
 
+			if (mLogs == null || mLogs.size() < position) return view;
+
 			final LinphoneCallLog log = mLogs.get(position);
 			long timestamp = log.getTimestamp();
 			LinphoneAddress address;

src/android/org/linphone/LinphoneActivity.java

@@ -1683,7 +1683,8 @@ public class LinphoneActivity extends LinphoneGenericActivity implements OnClick
 	}
 
 	public void refreshAccounts(){
-		if (LinphoneManager.getLc().getProxyConfigList().length > 1) {
+		if (LinphoneManager.getLc().getProxyConfigList() != null &&
+				LinphoneManager.getLc().getProxyConfigList().length > 1) {
 			accountsList.setVisibility(View.VISIBLE);
 			accountsList.setAdapter(new AccountsListAdapter());
 			accountsList.setOnItemClickListener(new AdapterView.OnItemClickListener() {

src/android/org/linphone/LinphonePreferences.java

@@ -476,6 +476,10 @@ public class LinphonePreferences {
 		LinphoneAuthInfo old_info = getAuthInfo(n);
 		try {
 			LinphoneProxyConfig prxCfg = getProxyConfig(n);
+			if (prxCfg == null) {
+				Log.e("Error, no proxy config at index " + n);
+				return;
+			}
 			prxCfg.edit();
 			prxCfg.setIdentity(identity);
 			prxCfg.enableRegister(true);

src/android/org/linphone/LinphoneUtils.java

@@ -279,7 +279,7 @@ public final class LinphoneUtils {
 			try {
 				bm = MediaStore.Images.Media.getBitmap(c.getContentResolver(),tUri);
 			} catch (IOException e) {
-				LinphoneActivity.instance().displayCustomToast("Something wrong happened", Toast.LENGTH_LONG);
+				Log.e("Error in setThumbnailPictureFromUri: " + e);
 				return;
 			}
 			if (bm != null) {

src/android/org/linphone/SettingsFragment.java

@@ -1351,9 +1351,11 @@ public class SettingsFragment extends PreferencesListFragment {
 
 	@Override
 	public void onPause() {
+		if (LinphoneActivity.isInstanciated() && LinphoneManager.isInstanciated()) {
 			if (LinphoneManager.getInstance().getEchoTesterStatus())
 				stopEchoTester();
 			LinphoneActivity.instance().hideTopBar();
+		}
 		super.onPause();
 	}
 }