basic persistance layer. refactor some parts of the conversation activity

AndroidManifest.xml

@@ -17,7 +17,8 @@
         android:theme="@android:style/Theme.Holo.Light" >
         <activity
             android:name="de.gultsch.chat.ui.ConversationActivity"
-            android:label="Secure Conversations">
+            android:label="Secure Conversations"
+            android:windowSoftInputMode="stateHidden">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

gen/de/gultsch/chat/R.java

@@ -35,36 +35,35 @@ public final class R {
         public static final int section_header=0x7f020007;
     }
     public static final class id {
-        public static final int action_accounts=0x7f0a001c;
-        public static final int action_add=0x7f0a0018;
-        public static final int action_archive=0x7f0a001b;
-        public static final int action_details=0x7f0a001a;
-        public static final int action_security=0x7f0a0019;
-        public static final int action_settings=0x7f0a001d;
+        public static final int action_accounts=0x7f0a001b;
+        public static final int action_add=0x7f0a0017;
+        public static final int action_archive=0x7f0a001a;
+        public static final int action_details=0x7f0a0019;
+        public static final int action_security=0x7f0a0018;
+        public static final int action_settings=0x7f0a001c;
         public static final int contact_display_name=0x7f0a0009;
         public static final int contact_divider=0x7f0a000b;
         public static final int contact_jid=0x7f0a000a;
         public static final int contact_photo=0x7f0a0008;
-        public static final int conversation_lastmsg=0x7f0a000f;
-        public static final int conversation_name=0x7f0a000e;
+        public static final int conversation_image=0x7f0a000c;
+        public static final int conversation_lastmsg=0x7f0a000e;
+        public static final int conversation_name=0x7f0a000d;
         public static final int create_new_contact=0x7f0a0007;
-        public static final int duration=0x7f0a0010;
-        public static final int editText1=0x7f0a0012;
-        public static final int imageButton1=0x7f0a0013;
-        public static final int imageView1=0x7f0a000d;
+        public static final int duration=0x7f0a000f;
+        public static final int editText1=0x7f0a0011;
+        public static final int imageButton1=0x7f0a0012;
         public static final int jabber_contacts=0x7f0a0005;
         public static final int jabber_contacts_header=0x7f0a0004;
-        public static final int list=0x7f0a0016;
+        public static final int list=0x7f0a0015;
         public static final int new_contact_header=0x7f0a0006;
         public static final int new_conversation_search=0x7f0a0000;
         public static final int phone_contacts=0x7f0a0003;
         public static final int phone_contacts_header=0x7f0a0002;
         public static final int scrollView1=0x7f0a0001;
-        public static final int selected_conversation=0x7f0a0017;
-        public static final int slidingpanelayout=0x7f0a0015;
-        public static final int textView1=0x7f0a0014;
-        public static final int textsend=0x7f0a0011;
-        public static final int thumbnail=0x7f0a000c;
+        public static final int selected_conversation=0x7f0a0016;
+        public static final int slidingpanelayout=0x7f0a0014;
+        public static final int textView1=0x7f0a0013;
+        public static final int textsend=0x7f0a0010;
     }
     public static final class layout {
         public static final int activity_new_conversation=0x7f030000;
@@ -84,7 +83,6 @@ public final class R {
         public static final int action_secure=0x7f070006;
         public static final int action_settings=0x7f070001;
         public static final int app_name=0x7f070000;
-        public static final int hello_world=0x7f070008;
         public static final int title_activity_new_conversation=0x7f070007;
     }
     public static final class style {

res/layout/conversation_list_row.xml

@@ -2,61 +2,53 @@
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     android:orientation="horizontal"
-    android:padding="5dip">
+    android:padding="8dp">
  
-    <!--  ListRow Left sied Thumbnail image -->
-    <LinearLayout android:id="@+id/thumbnail"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:padding="3dip"
-        android:layout_alignParentLeft="true"
-        android:layout_marginRight="5dip">
 
 	<ImageView
-            android:id="@+id/imageView1"
-            android:layout_width="wrap_content"
+            android:id="@+id/conversation_image"
+            android:layout_width="56dp"
+            android:layout_height="56dp"
+            android:layout_alignParentLeft="true"/>
+
+	<RelativeLayout
+	    android:layout_toRightOf="@+id/conversation_image"
+	    android:layout_centerVertical="true"
 	    android:layout_height="wrap_content"
-            android:src="@drawable/ic_profile" />
+	    android:layout_width="fill_parent"
+	    android:paddingLeft="8dp">
 
-    </LinearLayout>
- 
-    <!-- Title Of Song-->
 	    <TextView
 	        android:id="@+id/conversation_name"
 	        android:layout_width="wrap_content"
 	        android:layout_height="wrap_content"
-        android:layout_alignTop="@+id/thumbnail"
-        android:layout_toRightOf="@+id/thumbnail"
-        android:text="Rihanna Love the way lie"
+	        android:text="Mein Contact"
 	        android:textColor="#636363"
-        android:typeface="sans"
-        android:textSize="20dip"/>
+	        android:textSize="20sp"
+	        android:typeface="sans" />
 	 
-    <!-- Artist Name -->
 	    <TextView
 	        android:id="@+id/conversation_lastmsg"
 	        android:layout_width="fill_parent"
 	        android:layout_height="wrap_content"
 	        android:layout_below="@id/conversation_name"
 	        android:textColor="#636363"
-        android:textSize="12dip"
-        android:layout_marginTop="1dip"
-        android:layout_toRightOf="@+id/thumbnail"
-        android:text="Just gona stand there and ..." />
+	        android:textSize="14sp"
+	        android:text="This is my last message"
+	        android:paddingTop="3dp"/>
 
-    <!-- Rightend Duration -->
 	    <TextView
 	        android:id="@+id/duration"
 	        android:layout_width="wrap_content"
 	        android:layout_height="wrap_content"
+	        android:layout_alignBaseline="@+id/conversation_name"
 	        android:layout_alignParentRight="true"
-        android:layout_alignBottom="@id/conversation_name"
 	        android:gravity="right"
-        android:text="5:45"
-        android:layout_marginRight="5dip"
-        android:textSize="10dip"
-        android:textColor="#636363"/>
+	        android:text="2 min"
+	        android:textColor="#636363"
+	        android:textSize="12sp" />
 
+ 	</RelativeLayout>
  
  
 </RelativeLayout>

res/values/strings.xml

@@ -5,10 +5,8 @@
     <string name="action_settings">Settings</string>
     <string name="action_add">New conversation</string>
     <string name="action_accounts">Manage accounts</string>
-    <string name="action_archive">Archive</string>
+    <string name="action_archive">Archive conversation</string>
     <string name="action_details">Show details</string>
     <string name="action_secure">Secure conversation</string>
     <string name="title_activity_new_conversation">New Conversation</string>
-    <string name="hello_world">Hello world!</string>
-
 </resources>

src/de/gultsch/chat/Conversation.java

@@ -1,21 +0,0 @@
-package de.gultsch.chat;
-
-import java.util.ArrayList;
-
-
-public class Conversation {
-	private String name;
-	private ArrayList<Message> msgs = new ArrayList<Message>();
-	
-	public Conversation(String name) {
-		this.name = name;
-	}
-	
-	public ArrayList<Message> getLastMessages(int count, int offset) {		
-		msgs.add(new Message("this is my last message"));
-		return msgs;
-	}
-	public String getName() {
-		return this.name;
-	}
-}

src/de/gultsch/chat/ConversationCursor.java

@@ -3,6 +3,9 @@ package de.gultsch.chat;
 
 import java.util.ArrayList;
 
+import de.gultsch.chat.entities.Conversation;
+import de.gultsch.chat.entities.Message;
+
 
 import android.database.AbstractCursor;
 

src/de/gultsch/chat/ConversationList.java

@@ -4,6 +4,8 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Comparator;
 
+import de.gultsch.chat.entities.Conversation;
+
 public class ConversationList extends ArrayList<Conversation> {
 	
 	private static final long serialVersionUID = 3661496589984289968L;
@@ -24,21 +26,6 @@ public class ConversationList extends ArrayList<Conversation> {
 		this.selectedConversationPosition = selectedConversation;
 	}
 	
-	public void sort() {
-		Conversation selectedConversation = this.get(selectedConversationPosition);
-		//sort this
-		Collections.sort(this, new Comparator<Conversation>() {
-
-			@Override
-			public int compare(Conversation lhs, Conversation rhs) {
-				// TODO Auto-generated method stub
-				return 0;
-			}
-		});
-		
-		this.selectedConversationPosition = this.indexOf(selectedConversation);
-	}
-	
 	public synchronized int addAndReturnPosition(Conversation conversation) {
 		this.add(conversation);
 		return size() - 1;

src/de/gultsch/chat/entities/Account.java

@@ -0,0 +1,11 @@
+package de.gultsch.chat.entities;
+
+public class Account {
+
+	private String uuid;
+
+	public String getUuid() {
+		return this.uuid;
+	}
+
+}

src/de/gultsch/chat/entities/Contact.java

@@ -1,4 +1,4 @@
-package de.gultsch.chat;
+package de.gultsch.chat.entities;
 
 import java.io.Serializable;
 

src/de/gultsch/chat/entities/Conversation.java

@@ -0,0 +1,99 @@
+package de.gultsch.chat.entities;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.UUID;
+
+import android.content.ContentValues;
+import android.database.Cursor;
+import android.net.Uri;
+
+public class Conversation implements Serializable {
+
+	private static final long serialVersionUID = -6727528868973996739L;
+	public static final int STATUS_AVAILABLE = 0;
+	public static final int STATUS_ARCHIVED = 1;
+	public static final int STATUS_DELETED = 2;
+	private String uuid;
+	private String name;
+	private String profilePhotoUri;
+	private String accountUuid;
+	private String contactJid;
+	private int status;
+
+	// legacy. to be removed
+	private ArrayList<Message> msgs = new ArrayList<Message>();
+
+	public Conversation(String name, Uri profilePhoto, Account account,
+			String contactJid) {
+		this(UUID.randomUUID().toString(), name, profilePhoto.toString(),
+				account.getUuid(), contactJid, STATUS_AVAILABLE);
+	}
+
+	public Conversation(String uuid, String name, String profilePhoto,
+			String accountUuid, String contactJid, int status) {
+		this.uuid = uuid;
+		this.name = name;
+		this.profilePhotoUri = profilePhoto;
+		this.accountUuid = accountUuid;
+		this.contactJid = contactJid;
+		this.status = status;
+	}
+
+	public ArrayList<Message> getLastMessages(int count, int offset) {
+		msgs.add(new Message("this is my last message"));
+		return msgs;
+	}
+
+	public String getName() {
+		return this.name;
+	}
+
+	public String getUuid() {
+		return this.uuid;
+	}
+
+	public String getProfilePhotoString() {
+		return this.profilePhotoUri;
+	}
+
+	public String getAccountUuid() {
+		return this.accountUuid;
+	}
+
+	public String getContactJid() {
+		return this.contactJid;
+	}
+
+	public Uri getProfilePhotoUri() {
+		if (this.profilePhotoUri != null) {
+			return Uri.parse(profilePhotoUri);
+		}
+		return null;
+	}
+
+	public int getStatus() {
+		return this.status;
+	}
+
+	public ContentValues getContentValues() {
+		ContentValues values = new ContentValues();
+		values.put("uuid", this.uuid);
+		values.put("name", this.name);
+		values.put("profilePhotoUri", this.profilePhotoUri);
+		values.put("accountUuid", this.accountUuid);
+		values.put("contactJid", this.contactJid);
+		values.put("status", this.status);
+		return values;
+	}
+
+	public static Conversation fromCursor(Cursor cursor) {
+		return new Conversation(
+				cursor.getString(cursor.getColumnIndex("uuid")),
+				cursor.getString(cursor.getColumnIndex("name")),
+				cursor.getString(cursor.getColumnIndex("profilePhotoUri")),
+				cursor.getString(cursor.getColumnIndex("accountUuid")),
+				cursor.getString(cursor.getColumnIndex("contactJid")),
+				cursor.getInt(cursor.getColumnIndex("status")));
+	}
+}

src/de/gultsch/chat/entities/Message.java

@@ -1,4 +1,4 @@
-package de.gultsch.chat;
+package de.gultsch.chat.entities;
 
 public class Message {
 

src/de/gultsch/chat/persistance/DatabaseBackend.java

@@ -0,0 +1,68 @@
+package de.gultsch.chat.persistance;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import de.gultsch.chat.entities.Conversation;
+import android.content.Context;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteOpenHelper;
+import android.util.Log;
+
+public class DatabaseBackend extends SQLiteOpenHelper {
+	
+	private static DatabaseBackend instance = null;
+	
+	private static final String DATABASE_NAME = "history";
+	private static final int DATABASE_VERSION = 1;
+
+	public DatabaseBackend(Context context) {
+		super(context, DATABASE_NAME, null, DATABASE_VERSION);
+	}
+
+	@Override
+	public void onCreate(SQLiteDatabase db) {
+		db.execSQL("create table conversations (uuid TEXT, name TEXT, profilePhotoUri TEXT, accountUuid TEXT, contactJid TEXT)");
+	}
+
+	@Override
+	public void onUpgrade(SQLiteDatabase db, int arg1, int arg2) {
+		// TODO Auto-generated method stub
+
+	}
+	
+	public static synchronized DatabaseBackend getInstance(Context context) {
+		if (instance == null) {
+			instance = new DatabaseBackend(context.getApplicationContext());
+		}
+		return instance;
+	}
+	
+	public void addConversation(Conversation conversation) {
+		SQLiteDatabase db = this.getWritableDatabase();
+		db.insert("conversations", null, conversation.getContentValues());
+	}
+	
+	
+	public int getConversationCount() {
+		SQLiteDatabase db = this.getReadableDatabase();
+		Cursor cursor = db.rawQuery("select count(uuid) as count from conversations",null);
+		cursor.moveToFirst();
+		return cursor.getInt(0);
+	}
+
+	public List<Conversation> getConversations(int status) {
+		List<Conversation> list = new ArrayList<Conversation>();
+		SQLiteDatabase db = this.getReadableDatabase();
+		String[] selectionArgs = {""+status};
+		Cursor cursor = db.rawQuery("select * from conversations where status = ?", selectionArgs);
+		Log.d("gultsch","getConversations has found "+cursor.getCount()+" rows");
+		while(cursor.moveToNext()) {
+			Log.d("gultsch","converting row #"+cursor.getPosition());
+			list.add(Conversation.fromCursor(cursor));
+		}
+		return list;
+	}
+
+}

src/de/gultsch/chat/ui/ConversationActivity.java

@@ -1,15 +1,20 @@
 package de.gultsch.chat.ui;
 
 import java.util.HashMap;
+import java.util.List;
 
-import de.gultsch.chat.Contact;
-import de.gultsch.chat.Conversation;
 import de.gultsch.chat.ConversationCursor;
 import de.gultsch.chat.ConversationList;
 import de.gultsch.chat.R;
 import de.gultsch.chat.R.id;
+import de.gultsch.chat.entities.Account;
+import de.gultsch.chat.entities.Contact;
+import de.gultsch.chat.entities.Conversation;
+import de.gultsch.chat.persistance.DatabaseBackend;
+import android.net.Uri;
 import android.os.Bundle;
 import android.app.Activity;
+import android.app.FragmentManager;
 import android.app.FragmentTransaction;
 import android.content.Context;
 import android.content.Intent;
@@ -17,14 +22,18 @@ import android.support.v4.widget.SlidingPaneLayout;
 import android.support.v4.widget.SlidingPaneLayout.PanelSlideListener;
 import android.util.Log;
 import android.view.KeyEvent;
+import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
+import android.view.ViewGroup;
 import android.view.inputmethod.InputMethodManager;
 import android.widget.AdapterView;
 import android.widget.AdapterView.OnItemClickListener;
+import android.widget.ArrayAdapter;
 import android.widget.ListView;
-import android.widget.SimpleCursorAdapter;
+import android.widget.TextView;
+import android.widget.ImageView;
 
 public class ConversationActivity extends Activity {
 
@@ -34,34 +43,51 @@ public class ConversationActivity extends Activity {
 	protected SlidingPaneLayout spl;
 
 	protected HashMap<Conversation, ConversationFragment> conversationFragments = new HashMap<Conversation, ConversationFragment>();
+	private DatabaseBackend dbb;
 
 	@Override
 	protected void onCreate(Bundle savedInstanceState) {
+		
+		dbb = DatabaseBackend.getInstance(this);
+		
 		super.onCreate(savedInstanceState);
 
+		final List<Conversation> conversationList = dbb.getConversations(Conversation.STATUS_AVAILABLE);
+
+		if (getIntent().getAction().equals(Intent.ACTION_MAIN)) {
+			if (conversationList.size() < 0) {
+				Log.d("gultsch",
+						"no conversations detected. redirect to new conversation activity");
+				startActivity(new Intent(this, NewConversationActivity.class));
+				finish();
+			}
+		}
+
 		setContentView(R.layout.fragment_conversations_overview);
 
-		final ConversationList conversationList = new ConversationList();
-
-		String[] fromColumns = { ConversationCursor.NAME,
-				ConversationCursor.LAST_MSG };
-		int[] toViews = { R.id.conversation_name, R.id.conversation_lastmsg };
-
-		final SimpleCursorAdapter adapter = new SimpleCursorAdapter(this,
-				R.layout.conversation_list_row, conversationList.getCursor(),
-				fromColumns, toViews, 0);
 		final ListView listView = (ListView) findViewById(R.id.list);
-		listView.setAdapter(adapter);
+		
+		listView.setAdapter(new ArrayAdapter<Conversation>(this, R.layout.conversation_list_row, conversationList) {
+			@Override
+			public View getView (int position, View view, ViewGroup parent) {
+				if (view == null) {
+					LayoutInflater  inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+					view = (View) inflater.inflate(R.layout.conversation_list_row,null);
+					((TextView) view.findViewById(R.id.conversation_name)).setText(getItem(position).getName());
+					((ImageView) view.findViewById(R.id.conversation_image)).setImageURI(getItem(position).getProfilePhotoUri());
+				}
+				return view;
+			}
+			
+		});
 		
 		listView.setOnItemClickListener(new OnItemClickListener() {
 
 			@Override
 			public void onItemClick(AdapterView<?> arg0, View clickedView,
 					int position, long arg3) {
-				conversationList.setSelectedConversationPosition(position);
-				swapConversationFragment(conversationList);
-				getActionBar().setTitle(
-						conversationList.getSelectedConversation().getName());
+				swapConversationFragment(conversationList.get(position));
+				getActionBar().setTitle(conversationList.get(position).getName());
 				spl.closePane();
 			}
 		});
@@ -95,9 +121,8 @@ public class ConversationActivity extends Activity {
 			public void onPanelClosed(View arg0) {
 				if (conversationList.size() > 0) {
 					getActionBar().setDisplayHomeAsUpEnabled(true);
-					getActionBar().setTitle(
-							conversationList.getSelectedConversation()
-									.getName());
+					ConversationFragment convFrag = (ConversationFragment) getFragmentManager().findFragmentById(R.id.selected_conversation);
+					getActionBar().setTitle(convFrag.getConversation().getName());
 					invalidateOptionsMenu();
 				}
 			}
@@ -116,25 +141,26 @@ public class ConversationActivity extends Activity {
 						ConversationActivity.CONVERSATION_CONTACT);
 				Log.d("gultsch",
 						"start conversation with " + contact.getDisplayName());
-				int pos = conversationList
-						.addAndReturnPosition(new Conversation(contact
-								.getDisplayName()));
-				conversationList.setSelectedConversationPosition(pos);
-				swapConversationFragment(conversationList);
+
+				// start new conversation
+				Conversation conversation = new Conversation(
+						contact.getDisplayName(), contact.getProfilePhoto(),
+						new Account(), contact.getJid());
+
+				//@TODO don't write to database here; always go through service
+				dbb.addConversation(conversation);
+				conversationList.add(0, conversation);
+				swapConversationFragment(conversationList.get(0));
 				spl.closePane();
 
 				// why do i even need this
 				getActionBar().setDisplayHomeAsUpEnabled(true);
-				getActionBar().setTitle(
-						conversationList.getSelectedConversation().getName());
+				getActionBar().setTitle(conversationList.get(0).getName());
 			}
 		} else {
 			// normal startup
 			if (conversationList.size() >= 1) {
-				conversationList.setSelectedConversationPosition(0);
-				swapConversationFragment(conversationList);
-			} else {
-				startActivity(new Intent(this, NewConversationActivity.class));
+				swapConversationFragment(conversationList.get(0));
 			}
 		}
 	}
@@ -168,24 +194,22 @@ public class ConversationActivity extends Activity {
 			break;
 		case R.id.action_add:
 			startActivity(new Intent(this, NewConversationActivity.class));
+		case R.id.action_archive:
+			
 		default:
 			break;
 		}
 		return super.onOptionsItemSelected(item);
 	}
 
-	protected void swapConversationFragment(
-			final ConversationList conversationList) {
+	protected void swapConversationFragment(Conversation conv) {
 		ConversationFragment selectedFragment;
-		if (conversationFragments.containsKey(conversationList
-				.getSelectedConversation())) {
-			selectedFragment = conversationFragments.get(conversationList
-					.getSelectedConversation());
+		if (conversationFragments.containsKey(conv)) {
+			selectedFragment = conversationFragments.get(conv);
 		} else {
 			selectedFragment = new ConversationFragment();
-			conversationFragments.put(
-					conversationList.getSelectedConversation(),
-					selectedFragment);
+			selectedFragment.setConversation(conv);
+			conversationFragments.put(conv,selectedFragment);
 		}
 		FragmentTransaction transaction = getFragmentManager()
 				.beginTransaction();

src/de/gultsch/chat/ui/ConversationFragment.java

@@ -1,6 +1,7 @@
 package de.gultsch.chat.ui;
 
 import de.gultsch.chat.R;
+import de.gultsch.chat.entities.Conversation;
 import android.app.Fragment;
 import android.os.Bundle;
 import android.view.LayoutInflater;
@@ -9,8 +10,18 @@ import android.view.ViewGroup;
 
 public class ConversationFragment extends Fragment {
 	
+	Conversation conversation;
+	
+	public void setConversation(Conversation conv) {
+		this.conversation = conv;
+	}
+	
 	@Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         return inflater.inflate(R.layout.fragment_conversation, container, false);
     }
+
+	public Conversation getConversation() {
+		return conversation;
+	}
 }

src/de/gultsch/chat/ui/NewConversationActivity.java

@@ -5,8 +5,9 @@ import java.util.Map.Entry;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-import de.gultsch.chat.Contact;
 import de.gultsch.chat.R;
+import de.gultsch.chat.entities.Contact;
+import de.gultsch.chat.persistance.DatabaseBackend;
 import android.os.Bundle;
 import android.provider.ContactsContract;
 import android.text.Editable;
@@ -48,15 +49,14 @@ public class NewConversationActivity extends Activity {
 			+ "\") AND (" + ContactsContract.CommonDataKinds.Im.PROTOCOL
 			+ "=\"" + ContactsContract.CommonDataKinds.Im.PROTOCOL_JABBER
 			+ "\")";
+	protected static final String DEFAULT_PROFILE_PHOTO = "android.resource://de.gultsch.chat/" + R.drawable.ic_profile;
 
 	protected View getViewForContact(Contact contact) {
 		LayoutInflater  inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
 		View view = (View) inflater.inflate(R.layout.contact,null);
 		((TextView) view.findViewById(R.id.contact_display_name)).setText(contact.getDisplayName());
 		((TextView) view.findViewById(R.id.contact_jid)).setText(contact.getJid());
-		if (contact.getProfilePhoto() != null) {
 		((ImageView) view.findViewById(R.id.contact_photo)).setImageURI(contact.getProfilePhoto());
-		}
 		view.setOnClickListener(new OnClickListener() {
 			
 			@Override
@@ -93,6 +93,12 @@ public class NewConversationActivity extends Activity {
 	protected void onCreate(Bundle savedInstanceState) {
 		
 		super.onCreate(savedInstanceState);
+		
+		if (DatabaseBackend.getInstance(this).getConversationCount() < 1) {
+			getActionBar().setDisplayHomeAsUpEnabled(false);
+			getActionBar().setHomeButtonEnabled(false);
+		}
+		
 		setContentView(R.layout.activity_new_conversation);
 		CursorLoader mCursorLoader = new CursorLoader(this,
 				ContactsContract.Data.CONTENT_URI, PROJECTION, SELECTION, null,
@@ -102,13 +108,17 @@ public class NewConversationActivity extends Activity {
 			@Override
 			public void onLoadComplete(Loader<Cursor> arg0, Cursor cursor) {
 				while (cursor.moveToNext()) {
+					String profilePhoto = cursor.getString(cursor.getColumnIndex(ContactsContract.Data.PHOTO_THUMBNAIL_URI));
+					if (profilePhoto == null) {
+						profilePhoto = DEFAULT_PROFILE_PHOTO;
+					}
 					Contact contact = new Contact(
 							cursor.getString(cursor
 									.getColumnIndex(ContactsContract.Data.DISPLAY_NAME)),
 							cursor.getString(cursor
 									.getColumnIndex(ContactsContract.CommonDataKinds.Im.DATA)),
-									cursor.getString(cursor
-											.getColumnIndex(ContactsContract.Data.PHOTO_THUMBNAIL_URI)));
+									profilePhoto
+									);
 					View contactView = getViewForContact(contact);
 					availablePhoneContacts.put(contact, getViewForContact(contact));
 					((LinearLayout) findViewById(R.id.phone_contacts)).addView(contactView);
@@ -166,7 +176,7 @@ public class NewConversationActivity extends Activity {
 		if (matcher.find()) {
 			createNewContact.removeAllViews();
 			String name = search.split("@")[0];
-			newContact = new Contact(name,search,null);
+			newContact = new Contact(name,search,DEFAULT_PROFILE_PHOTO);
 			newContactView = getViewForContact(newContact);
 			newContactView.findViewById(R.id.contact_divider).setVisibility(View.GONE);
 			createNewContact.addView(newContactView);