Update views on background thread

app/src/main/java/org/isoron/uhabits/fragments/ShowHabitFragment.java

@@ -47,6 +47,7 @@ import org.isoron.uhabits.dialogs.HistoryEditorDialog;
 import org.isoron.uhabits.helpers.ReminderHelper;
 import org.isoron.uhabits.models.Habit;
 import org.isoron.uhabits.models.Score;
+import org.isoron.uhabits.tasks.BaseTask;
 import org.isoron.uhabits.views.HabitDataView;
 import org.isoron.uhabits.views.HabitFrequencyView;
 import org.isoron.uhabits.views.HabitHistoryView;
@@ -151,6 +152,7 @@ public class ShowHabitFragment extends Fragment
     private void updateScoreRing(View view)
     {
         if(habit == null) return;
+        if(view == null) return;
 
         RingView scoreRing = (RingView) view.findViewById(R.id.scoreRing);
         scoreRing.setColor(habit.color);
@@ -230,11 +232,29 @@ public class ShowHabitFragment extends Fragment
 
     public void refreshData()
     {
-        if(dataViews == null) return;
-        updateScoreRing(getView());
+        new BaseTask()
+        {
+            @Override
+            protected Void doInBackground(Void... params)
+            {
+                if(dataViews == null) return null;
+                updateScoreRing(getView());
+
+                for(HabitDataView view : dataViews)
+                    view.refreshData();
+
+                return null;
+            }
+
+            @Override
+            protected void onPostExecute(Void aVoid)
+            {
+                if(dataViews == null) return;
+                for(HabitDataView view : dataViews)
+                    view.invalidate();
+            }
+        }.execute();
 
-        for(HabitDataView view : dataViews)
-            view.refreshData();
     }
 
     @Override

app/src/main/java/org/isoron/uhabits/views/HabitDataView.java

@@ -26,4 +26,6 @@ public interface HabitDataView
     void setHabit(Habit habit);
 
     void refreshData();
+
+    void invalidate();
 }

app/src/main/java/org/isoron/uhabits/views/HabitFrequencyView.java

@@ -180,8 +180,6 @@ public class HabitFrequencyView extends ScrollableDataView implements HabitDataV
             generateRandomData();
         else if(habit != null)
             frequency = habit.repetitions.getWeekdayFrequency();
-
-        invalidate();
     }
 
     private void generateRandomData()

app/src/main/java/org/isoron/uhabits/views/HabitHistoryView.java

@@ -26,7 +26,6 @@ import android.graphics.Paint;
 import android.graphics.Paint.Align;
 import android.graphics.RectF;
 import android.util.AttributeSet;
-import android.util.Log;
 import android.view.HapticFeedbackConstants;
 import android.view.MotionEvent;
 
@@ -221,7 +220,6 @@ public class HabitHistoryView extends ScrollableDataView implements HabitDataVie
         }
 
         updateDate();
-        invalidate();
     }
 
     private void generateRandomData()

app/src/main/java/org/isoron/uhabits/views/HabitScoreView.java

@@ -185,8 +185,6 @@ public class HabitScoreView extends ScrollableDataView implements HabitDataView
             if (habit == null) return;
             scores = habit.scores.getAllValues(bucketSize);
         }
-
-        invalidate();
     }
 
     public void setBucketSize(int bucketSize)

app/src/main/java/org/isoron/uhabits/views/HabitStreakView.java

@@ -169,7 +169,6 @@ public class HabitStreakView extends View implements HabitDataView
         if(habit == null) return;
         streaks = habit.streaks.getAll(maxStreakCount);
         updateMaxMin();
-        postInvalidate();
     }
 
     @Override