Fixes for fatal crashes

app/src/main/java/gr/thmmy/mthmmy/activities/main/recent/RecentFragment.java

@@ -22,6 +22,7 @@ import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 import gr.thmmy.mthmmy.R;
+import gr.thmmy.mthmmy.base.BaseApplication;
 import gr.thmmy.mthmmy.base.BaseFragment;
 import gr.thmmy.mthmmy.model.TopicSummary;
 import gr.thmmy.mthmmy.session.SessionManager;
@@ -146,9 +147,9 @@ public class RecentFragment extends BaseFragment {
             topicSummaries.addAll(fetchedRecent);
             recentAdapter.notifyDataSetChanged();
         } else if (resultCode == NetworkResultCodes.NETWORK_ERROR) {
-            Toast.makeText(getContext(), "Network error", Toast.LENGTH_SHORT).show();
+            Toast.makeText(BaseApplication.getInstance().getApplicationContext(), "Network error", Toast.LENGTH_SHORT).show();
         } else {
-            Toast.makeText(getContext(), "Unexpected error," +
+            Toast.makeText(BaseApplication.getInstance().getApplicationContext(), "Unexpected error," +
                     " please contact the developers with the details", Toast.LENGTH_LONG).show();
         }
 

app/src/main/java/gr/thmmy/mthmmy/activities/main/unread/UnreadFragment.java

@@ -143,11 +143,12 @@ public class UnreadFragment extends BaseFragment {
     @Override
     public void onDestroy() {
         super.onDestroy();
-        if (unreadTask.isRunning())
+        if (unreadTask!=null && unreadTask.isRunning())
             unreadTask.cancel(true);
-        if (markReadTask.isRunning())
+        if (markReadTask!=null && markReadTask.isRunning())
             markReadTask.cancel(true);
-        topicSummaries.clear();
+        if(topicSummaries!=null)
+            topicSummaries.clear();
     }
 
     public interface UnreadFragmentInteractionListener extends FragmentInteractionListener {

app/src/main/java/gr/thmmy/mthmmy/activities/topic/Posting.java

@@ -2,6 +2,7 @@ package gr.thmmy.mthmmy.activities.topic;
 
 import org.jsoup.Jsoup;
 import org.jsoup.nodes.Document;
+import org.jsoup.nodes.Element;
 
 import java.io.IOException;
 
@@ -60,22 +61,24 @@ public class Posting {
         String finalUrl = response.request().url().toString();
         if (finalUrl.contains("action=post")) {
             Document postErrorPage = Jsoup.parse(response.body().string());
-            String[] errors = postErrorPage.select("tr[id=errors] div[id=error_list]").first()
-                    .toString().split("<br>");
-            for (int i = 0; i < errors.length; ++i) { //TODO test
-                Timber.d(String.valueOf(i));
-                Timber.d(errors[i]);
-            }
-            for (String error : errors) {
-                if (error.contains("Your session timed out while posting") ||
-                        error.contains("Υπερβήκατε τον μέγιστο χρόνο σύνδεσης κατά την αποστολή"))
-                    return REPLY_STATUS.SESSION_ENDED;
-                if (error.contains("No subject was filled in")
-                        || error.contains("Δεν δόθηκε τίτλος"))
-                    return REPLY_STATUS.NO_SUBJECT;
-                if (error.contains("The message body was left empty")
-                        || error.contains("Δεν δόθηκε κείμενο για το μήνυμα"))
-                    return REPLY_STATUS.EMPTY_BODY;
+            Element errorsElement = postErrorPage.select("tr[id=errors] div[id=error_list]").first();
+            if(errorsElement!=null){
+                String[] errors = errorsElement.toString().split("<br>");
+                for (int i = 0; i < errors.length; ++i) { //TODO test
+                    Timber.d(String.valueOf(i));
+                    Timber.d(errors[i]);
+                }
+                for (String error : errors) {
+                    if (error.contains("Your session timed out while posting") ||
+                            error.contains("Υπερβήκατε τον μέγιστο χρόνο σύνδεσης κατά την αποστολή"))
+                        return REPLY_STATUS.SESSION_ENDED;
+                    if (error.contains("No subject was filled in")
+                            || error.contains("Δεν δόθηκε τίτλος"))
+                        return REPLY_STATUS.NO_SUBJECT;
+                    if (error.contains("The message body was left empty")
+                            || error.contains("Δεν δόθηκε κείμενο για το μήνυμα"))
+                        return REPLY_STATUS.EMPTY_BODY;
+                }
             }
             return REPLY_STATUS.NEW_REPLY_WHILE_POSTING;
         }

app/src/main/java/gr/thmmy/mthmmy/activities/topic/TopicActivity.java

@@ -42,7 +42,7 @@ import java.util.ArrayList;
 import gr.thmmy.mthmmy.R;
 import gr.thmmy.mthmmy.activities.topic.tasks.EditTask;
 import gr.thmmy.mthmmy.activities.topic.tasks.PrepareForEditTask;
-import gr.thmmy.mthmmy.activities.topic.tasks.PrepareForReply;
+import gr.thmmy.mthmmy.activities.topic.tasks.PrepareForReplyTask;
 import gr.thmmy.mthmmy.activities.topic.tasks.ReplyTask;
 import gr.thmmy.mthmmy.activities.topic.tasks.TopicTask;
 import gr.thmmy.mthmmy.base.BaseActivity;
@@ -618,7 +618,7 @@ public class TopicActivity extends BaseActivity implements TopicAdapter.OnPostFo
                 }
             }
         });
-        viewModel.setPrepareForReplyCallbacks(new PrepareForReply.PrepareForReplyCallbacks() {
+        viewModel.setPrepareForReplyCallbacks(new PrepareForReplyTask.PrepareForReplyCallbacks() {
             @Override
             public void onPrepareForReplyStarted() {
                 progressBar.setVisibility(ProgressBar.VISIBLE);

app/src/main/java/gr/thmmy/mthmmy/activities/topic/tasks/PrepareForReply.java → app/src/main/java/gr/thmmy/mthmmy/activities/topic/tasks/PrepareForReplyTask.java

@@ -15,13 +15,13 @@ import okhttp3.Request;
 import okhttp3.Response;
 import timber.log.Timber;
 
-public class PrepareForReply extends AsyncTask<Integer, Void, PrepareForReplyResult> {
+public class PrepareForReplyTask extends AsyncTask<Integer, Void, PrepareForReplyResult> {
     private PrepareForReplyCallbacks listener;
     private OnPrepareForReplyFinished finishListener;
     private String replyPageUrl;
 
-    public PrepareForReply(PrepareForReplyCallbacks listener, OnPrepareForReplyFinished finishListener,
-                           String replyPageUrl) {
+    public PrepareForReplyTask(PrepareForReplyCallbacks listener, OnPrepareForReplyFinished finishListener,
+                               String replyPageUrl) {
         this.listener = listener;
         this.finishListener = finishListener;
         this.replyPageUrl = replyPageUrl;
@@ -49,12 +49,16 @@ public class PrepareForReply extends AsyncTask<Integer, Void, PrepareForReplyRes
             seqnum = document.select("input[name=seqnum]").first().attr("value");
             sc = document.select("input[name=sc]").first().attr("value");
             topic = document.select("input[name=topic]").first().attr("value");
-        } catch (IOException | Selector.SelectorParseException e) {
-            Timber.e(e, "Prepare failed.");
+        } catch (NullPointerException e) {
+            // TODO: Convert this task to (New)ParseTask (?) / handle parsing errors in a better way
+            Timber.e(e, "Prepare failed (1)");
+            return new PrepareForReplyResult(false, null, null, null, null, null);
+        } catch (IOException | Selector.SelectorParseException e){
+            Timber.e(e, "Prepare failed (2)");
             return new PrepareForReplyResult(false, null, null, null, null, null);
         }
 
-        StringBuilder buildedQuotes = new StringBuilder("");
+        StringBuilder buildedQuotes = new StringBuilder();
         for (Integer postIndex : postIndices) {
             request = new Request.Builder()
                     .url("https://www.thmmy.gr/smf/index.php?action=quotefast;quote=" +

app/src/main/java/gr/thmmy/mthmmy/viewmodel/TopicViewModel.java

@@ -17,7 +17,7 @@ import gr.thmmy.mthmmy.activities.topic.tasks.DeleteTask;
 import gr.thmmy.mthmmy.activities.topic.tasks.EditTask;
 import gr.thmmy.mthmmy.activities.topic.tasks.PrepareForEditResult;
 import gr.thmmy.mthmmy.activities.topic.tasks.PrepareForEditTask;
-import gr.thmmy.mthmmy.activities.topic.tasks.PrepareForReply;
+import gr.thmmy.mthmmy.activities.topic.tasks.PrepareForReplyTask;
 import gr.thmmy.mthmmy.activities.topic.tasks.PrepareForReplyResult;
 import gr.thmmy.mthmmy.activities.topic.tasks.RemoveVoteTask;
 import gr.thmmy.mthmmy.activities.topic.tasks.ReplyTask;
@@ -35,7 +35,7 @@ import gr.thmmy.mthmmy.utils.parsing.ParseHelpers;
 import timber.log.Timber;
 
 public class TopicViewModel extends BaseViewModel implements TopicTask.OnTopicTaskCompleted,
-        PrepareForReply.OnPrepareForReplyFinished, PrepareForEditTask.OnPrepareEditFinished {
+        PrepareForReplyTask.OnPrepareForReplyFinished, PrepareForEditTask.OnPrepareEditFinished {
     /**
      * topic state
      */
@@ -56,7 +56,7 @@ public class TopicViewModel extends BaseViewModel implements TopicTask.OnTopicTa
 
     private TopicTask currentTopicTask;
     private PrepareForEditTask currentPrepareForEditTask;
-    private PrepareForReply currentPrepareForReplyTask;
+    private PrepareForReplyTask currentPrepareForReplyTask;
 
     //callbacks for topic activity
     private TopicTask.TopicTaskObserver topicTaskObserver;
@@ -65,7 +65,7 @@ public class TopicViewModel extends BaseViewModel implements TopicTask.OnTopicTa
     private ReplyTask.ReplyTaskCallbacks replyFinishListener;
     private PrepareForEditTask.PrepareForEditCallbacks prepareForEditCallbacks;
     private EditTask.EditTaskCallbacks editTaskCallbacks;
-    private PrepareForReply.PrepareForReplyCallbacks prepareForReplyCallbacks;
+    private PrepareForReplyTask.PrepareForReplyCallbacks prepareForReplyCallbacks;
     private ExternalAsyncTask.OnTaskStartedListener voteTaskStartedListener;
     private NetworkTask.OnNetworkTaskFinishedListener<Void> voteTaskFinishedListener;
     private ExternalAsyncTask.OnTaskStartedListener removeVoteTaskStartedListener;
@@ -177,7 +177,7 @@ public class TopicViewModel extends BaseViewModel implements TopicTask.OnTopicTa
         stopLoading();
         setPageIndicatorIndex(pageCount, true);
         Timber.i("Preparing for reply");
-        currentPrepareForReplyTask = new PrepareForReply(prepareForReplyCallbacks, this,
+        currentPrepareForReplyTask = new PrepareForReplyTask(prepareForReplyCallbacks, this,
                 replyPageUrl.getValue());
         currentPrepareForReplyTask.execute(toQuoteList.toArray(new Integer[0]));
     }
@@ -424,7 +424,7 @@ public class TopicViewModel extends BaseViewModel implements TopicTask.OnTopicTa
         this.editTaskCallbacks = editTaskCallbacks;
     }
 
-    public void setPrepareForReplyCallbacks(PrepareForReply.PrepareForReplyCallbacks prepareForReplyCallbacks) {
+    public void setPrepareForReplyCallbacks(PrepareForReplyTask.PrepareForReplyCallbacks prepareForReplyCallbacks) {
         this.prepareForReplyCallbacks = prepareForReplyCallbacks;
     }