Fixed null pointer exceptions

TMessagesProj/build.gradle

@@ -82,7 +82,7 @@ android {
     defaultConfig {
         minSdkVersion 8
         targetSdkVersion 19
-        versionCode 225
-        versionName "1.4.10"
+        versionCode 226
+        versionName "1.4.11"
     }
 }

TMessagesProj/src/main/java/org/telegram/objects/MessageObject.java

@@ -376,6 +376,9 @@ public class MessageObject {
             }
         } else if (attach instanceof TLRPC.PhotoSize) {
             TLRPC.PhotoSize photo = (TLRPC.PhotoSize)attach;
+            if (photo.location == null) {
+                return "";
+            }
             return photo.location.volume_id + "_" + photo.location.local_id + ".jpg";
         } else if (attach instanceof TLRPC.Audio) {
             TLRPC.Audio audio = (TLRPC.Audio)attach;

TMessagesProj/src/main/java/org/telegram/ui/Cells/ChatMediaCell.java

@@ -53,6 +53,7 @@ public class ChatMediaCell extends ChatBaseCell implements MediaController.FileD
     private int photoWidth;
     private int photoHeight;
     private PhotoObject currentPhotoObject;
+    private String currentUrl;
     private String currentPhotoFilter;
     private ImageReceiver photoImage;
     private ProgressView progressView;
@@ -274,19 +275,33 @@ public class ChatMediaCell extends ChatBaseCell implements MediaController.FileD
         }
     }
 
-    @Override
-    protected boolean isUserDataChanged() {
-        return currentPhotoObject == null || super.isUserDataChanged();
+    private boolean isPhotoDataChanged(MessageObject object) {
+        if (object.type == 4) {
+            if (currentUrl == null) {
+                return true;
+            }
+            double lat = object.messageOwner.media.geo.lat;
+            double lon = object.messageOwner.media.geo._long;
+            String url = String.format(Locale.US, "https://maps.googleapis.com/maps/api/staticmap?center=%f,%f&zoom=13&size=100x100&maptype=roadmap&scale=%d&markers=color:red|size:big|%f,%f&sensor=false", lat, lon, Math.min(2, (int)Math.ceil(Utilities.density)), lat, lon);
+            if (!url.equals(currentUrl)) {
+                return true;
+            }
+        } else if (currentPhotoObject == null) {
+            return true;
+        }
+        return false;
     }
 
     @Override
     public void setMessageObject(MessageObject messageObject) {
-        if (currentMessageObject != messageObject || isUserDataChanged()) {
+        if (currentMessageObject != messageObject || isPhotoDataChanged(messageObject) || isUserDataChanged()) {
             super.setMessageObject(messageObject);
 
             progressVisible = false;
             buttonState = -1;
             gifDrawable = null;
+            currentPhotoObject = null;
+            currentUrl = null;
 
             if (messageObject.type == 8) {
                 gifDrawable = MediaController.getInstance().getGifDrawable(this, false);
@@ -321,8 +336,8 @@ public class ChatMediaCell extends ChatBaseCell implements MediaController.FileD
 
                 double lat = messageObject.messageOwner.media.geo.lat;
                 double lon = messageObject.messageOwner.media.geo._long;
-                String url = String.format(Locale.US, "https://maps.googleapis.com/maps/api/staticmap?center=%f,%f&zoom=13&size=100x100&maptype=roadmap&scale=%d&markers=color:red|size:big|%f,%f&sensor=false", lat, lon, Math.min(2, (int)Math.ceil(Utilities.density)), lat, lon);
-                photoImage.setImage(url, null, messageObject.isOut() ? placeholderOutDrawable : placeholderInDrawable);
+                currentUrl = String.format(Locale.US, "https://maps.googleapis.com/maps/api/staticmap?center=%f,%f&zoom=13&size=100x100&maptype=roadmap&scale=%d&markers=color:red|size:big|%f,%f&sensor=false", lat, lon, Math.min(2, (int)Math.ceil(Utilities.density)), lat, lon);
+                photoImage.setImage(currentUrl, null, messageObject.isOut() ? placeholderOutDrawable : placeholderInDrawable);
             } else {
                 photoWidth = (int) (Math.min(Utilities.displaySize.x, Utilities.displaySize.y) * 0.7f);
                 photoHeight = photoWidth + Utilities.dp(100);

TMessagesProj/src/main/java/org/telegram/ui/ChatActivity.java

@@ -1468,13 +1468,21 @@ public class ChatActivity extends BaseFragment implements SizeNotifierRelativeLa
         TLRPC.FileLocation newPhoto = null;
         int placeHolderId = 0;
         if (currentUser != null) {
-            currentUser = MessagesController.getInstance().users.get(currentUser.id);
+            TLRPC.User user = MessagesController.getInstance().users.get(currentUser.id);
+            if (user == null) {
+                return;
+            }
+            currentUser = user;
             if (currentUser.photo != null) {
                 newPhoto = currentUser.photo.photo_small;
             }
             placeHolderId = Utilities.getUserAvatarForId(currentUser.id);
         } else if (currentChat != null) {
-            currentChat = MessagesController.getInstance().chats.get(currentChat.id);
+            TLRPC.Chat chat = MessagesController.getInstance().chats.get(currentChat.id);
+            if (chat == null) {
+                return;
+            }
+            currentChat = chat;
             if (currentChat.photo != null) {
                 newPhoto = currentChat.photo.photo_small;
             }

TMessagesProj/src/main/java/org/telegram/ui/GalleryImageViewer.java

@@ -172,6 +172,14 @@ public class GalleryImageViewer extends AbstractGalleryActivity implements Notif
                 timeTextView.setVisibility(View.INVISIBLE);
                 localPagerAdapter = new LocalPagerAdapter(arr);
             } else if (messagesArr != null) {
+                MessageObject object = null;
+                for (MessageObject messageObject : messagesArr) {
+                    if (messageObject.messageOwner.dialog_id != 0 || messageObject.messageOwner.to_id != null) {
+                        object = messageObject;
+                        break;
+                    }
+                }
+
                 ArrayList<MessageObject> imagesArr = new ArrayList<MessageObject>();
                 HashMap<Integer, MessageObject> imagesByIds = new HashMap<Integer, MessageObject>();
                 imagesArr.addAll(messagesArr);
@@ -181,10 +189,13 @@ public class GalleryImageViewer extends AbstractGalleryActivity implements Notif
                 }
                 index = imagesArr.size() - index - 1;
 
-                MessageObject object = imagesArr.get(0);
+
                 if (object.messageOwner.dialog_id != 0) {
                     currentDialog = object.messageOwner.dialog_id;
                 } else {
+                    if (object.messageOwner.to_id == null) {
+                        finish();
+                    }
                     if (object.messageOwner.to_id.chat_id != 0) {
                         currentDialog = -object.messageOwner.to_id.chat_id;
                     } else {