StatsFragment crash fix, up libs & version

app/build.gradle

@@ -13,8 +13,8 @@ android {
         applicationId "gr.thmmy.mthmmy"
         minSdkVersion 19
         targetSdkVersion 28
-        versionCode 15
-        versionName "1.6.0"
+        versionCode 16
+        versionName "1.6.1"
         archivesBaseName = "mTHMMY-v$versionName"
         buildConfigField "String", "CURRENT_BRANCH", "\"" + getCurrentBranch() + "\""
         buildConfigField "String", "COMMIT_HASH", "\"" + getCommitHash() + "\""
@@ -62,7 +62,7 @@ tasks.whenTaskAdded { task ->
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation 'androidx.appcompat:appcompat:1.0.2'
-    implementation 'androidx.preference:preference:1.1.0-alpha01'
+    implementation 'androidx.preference:preference:1.1.0-alpha02'
     implementation 'androidx.legacy:legacy-preference-v14:1.0.0'
     implementation 'androidx.legacy:legacy-support-v4:1.0.0'
     implementation 'androidx.cardview:cardview:1.0.0'
@@ -72,7 +72,7 @@ dependencies {
     implementation 'com.google.android.material:material:1.0.0'
     implementation 'com.google.firebase:firebase-core:16.0.6'
     implementation 'com.google.firebase:firebase-messaging:17.3.4'
-    implementation 'com.crashlytics.sdk.android:crashlytics:2.9.7'
+    implementation 'com.crashlytics.sdk.android:crashlytics:2.9.8'
     implementation 'com.squareup.okhttp3:okhttp:3.12.0'
     implementation 'com.squareup.picasso:picasso:2.5.2'
     implementation 'com.jakewharton.picasso:picasso2-okhttp3-downloader:1.1.0'

app/src/main/java/gr/thmmy/mthmmy/activities/profile/stats/StatsFragment.java

@@ -56,13 +56,12 @@ public class StatsFragment extends Fragment {
     private ProfileStatsTask profileStatsTask;
     private LinearLayout mainContent;
     private MaterialProgressBar progressBar;
-    private boolean haveParsed = false;
 
     private boolean userHasPosts = true;
     private String generalStatisticsTitle = "", generalStatistics = "", postingActivityByTimeTitle = "", mostPopularBoardsByPostsTitle = "", mostPopularBoardsByActivityTitle = "";
-    final private List<Entry> postingActivityByTime = new ArrayList<>();
-    final private List<BarEntry> mostPopularBoardsByPosts = new ArrayList<>(), mostPopularBoardsByActivity = new ArrayList<>();
-    final private ArrayList<String> mostPopularBoardsByPostsLabels = new ArrayList<>(), mostPopularBoardsByActivityLabels = new ArrayList<>();
+    private final List<Entry> postingActivityByTime = new ArrayList<>();
+    private final List<BarEntry> mostPopularBoardsByPosts = new ArrayList<>(), mostPopularBoardsByActivity = new ArrayList<>();
+    private final ArrayList<String> mostPopularBoardsByPostsLabels = new ArrayList<>(), mostPopularBoardsByActivityLabels = new ArrayList<>();
 
     public StatsFragment() {
         // Required empty public constructor
@@ -95,7 +94,7 @@ public class StatsFragment extends Fragment {
         final View rootView = inflater.inflate(R.layout.fragment_stats, container, false);
         mainContent = rootView.findViewById(R.id.main_content);
         progressBar = rootView.findViewById(R.id.progressBar);
-        if (haveParsed)
+        if (profileStatsTask!=null && profileStatsTask.getStatus() == AsyncTask.Status.FINISHED)
             populateLayout();
         return rootView;
     }
@@ -103,7 +102,7 @@ public class StatsFragment extends Fragment {
     @Override
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
-        if (!haveParsed) {
+        if (profileStatsTask==null) {
             profileStatsTask = new ProfileStatsTask();
             profileStatsTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, profileUrl + ";sa=statPanel");
         }
@@ -130,7 +129,6 @@ public class StatsFragment extends Fragment {
         @Override
         protected void onPreExecute() {
             progressBar.setVisibility(ProgressBar.VISIBLE);
-            haveParsed = true;
         }
 
         @Override
@@ -159,7 +157,6 @@ public class StatsFragment extends Fragment {
                 getActivity().finish();
             }
             //Parse was successful
-            progressBar.setVisibility(ProgressBar.INVISIBLE);
             populateLayout();
         }
 
@@ -233,6 +230,7 @@ public class StatsFragment extends Fragment {
     }
 
     private void populateLayout() {
+        progressBar.setVisibility(ProgressBar.VISIBLE);
         ((TextView) mainContent.findViewById(R.id.general_statistics_title))
                 .setText(generalStatisticsTitle);
         ((TextView) mainContent.findViewById(R.id.general_statistics))
@@ -358,6 +356,7 @@ public class StatsFragment extends Fragment {
         mostPopularBoardsByActivityData.setValueTextColor(Color.WHITE);
         mostPopularBoardsByActivityChart.setData(mostPopularBoardsByActivityData);
         mostPopularBoardsByActivityChart.invalidate();
+        progressBar.setVisibility(ProgressBar.INVISIBLE);
     }
 
     private class MyXAxisValueFormatter implements IAxisValueFormatter {