Refactor ContactPhotoFactory to handle changing local contact URIs.

src/org/thoughtcrime/securesms/ConversationItem.java

@@ -42,6 +42,7 @@ import android.widget.TextView;
 import android.widget.Toast;
 
 import org.thoughtcrime.securesms.contacts.ContactIdentityManager;
+import org.thoughtcrime.securesms.contacts.ContactPhotoFactory;
 import org.thoughtcrime.securesms.crypto.MasterSecret;
 import org.thoughtcrime.securesms.database.MmsDatabase;
 import org.thoughtcrime.securesms.database.model.MediaMmsMessageRecord;
@@ -51,7 +52,6 @@ import org.thoughtcrime.securesms.database.model.NotificationMmsMessageRecord;
 import org.thoughtcrime.securesms.mms.Slide;
 import org.thoughtcrime.securesms.mms.SlideDeck;
 import org.thoughtcrime.securesms.protocol.Tag;
-import org.thoughtcrime.securesms.recipients.ContactPhotoFactory;
 import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.service.SendReceiveService;
 

src/org/thoughtcrime/securesms/contacts/ContactPhotoFactory.java

@@ -1,4 +1,4 @@
-package org.thoughtcrime.securesms.recipients;
+package org.thoughtcrime.securesms.contacts;
 
 import android.content.Context;
 import android.database.Cursor;
@@ -9,16 +9,19 @@ import android.provider.ContactsContract;
 import android.provider.ContactsContract.Contacts;
 
 import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.util.LRUCache;
 
 import java.io.InputStream;
+import java.util.Collections;
+import java.util.Map;
 
 public class ContactPhotoFactory {
 
   private static final Object defaultPhotoLock = new Object();
-  private static final Object localUserLock    = new Object();
 
   private static Bitmap defaultContactPhoto;
-  private static Bitmap localUserContactPhoto;
+  private static final Map<Uri,Bitmap> localUserContactPhotoCache =
+      Collections.synchronizedMap(new LRUCache<Uri,Bitmap>(2));
 
   private static final String[] CONTENT_URI_PROJECTION = new String[] {
     ContactsContract.Contacts._ID,
@@ -31,33 +34,34 @@ public class ContactPhotoFactory {
       if (defaultContactPhoto == null)
         defaultContactPhoto =  BitmapFactory.decodeResource(context.getResources(),
                                                             R.drawable.ic_contact_picture);
-    }
-
       return defaultContactPhoto;
     }
+  }
 
   public static Bitmap getLocalUserContactPhoto(Context context, Uri uri) {
-    synchronized (localUserLock) {
-      if (localUserContactPhoto == null) {
+    if (uri == null) return getDefaultContactPhoto(context);
+
+    Bitmap contactPhoto = localUserContactPhotoCache.get(uri);
+
+    if (contactPhoto == null) {
       Cursor cursor = context.getContentResolver().query(uri, CONTENT_URI_PROJECTION,
                                                          null, null, null);
 
       if (cursor != null && cursor.moveToFirst()) {
-          localUserContactPhoto = getContactPhoto(context, Uri.withAppendedPath(Contacts.CONTENT_URI,
+        contactPhoto = getContactPhoto(context, Uri.withAppendedPath(Contacts.CONTENT_URI,
                                        cursor.getLong(0) + ""));
       } else {
-          localUserContactPhoto = getDefaultContactPhoto(context);
-        }
+        contactPhoto = getDefaultContactPhoto(context);
       }
+
+      localUserContactPhotoCache.put(uri, contactPhoto);
     }
 
-    return localUserContactPhoto;
+    return contactPhoto;
   }
 
   public static void clearCache() {
-    synchronized (localUserLock) {
-      localUserContactPhoto = null;
-    }
+    localUserContactPhotoCache.clear();
   }
 
   private static Bitmap getContactPhoto(Context context, Uri uri) {

src/org/thoughtcrime/securesms/recipients/RecipientFactory.java

@@ -18,6 +18,7 @@ package org.thoughtcrime.securesms.recipients;
 
 import android.content.Context;
 
+import org.thoughtcrime.securesms.contacts.ContactPhotoFactory;
 import org.thoughtcrime.securesms.database.DatabaseFactory;
 import org.thoughtcrime.securesms.util.NumberUtil;
 

src/org/thoughtcrime/securesms/recipients/RecipientProvider.java

@@ -27,6 +27,7 @@ import android.provider.ContactsContract.Contacts;
 import android.provider.ContactsContract.PhoneLookup;
 import android.util.Log;
 
+import org.thoughtcrime.securesms.contacts.ContactPhotoFactory;
 import org.thoughtcrime.securesms.util.LRUCache;
 import org.thoughtcrime.securesms.util.ListenableFutureTask;
 import org.thoughtcrime.securesms.util.Util;