Make scrolling very smooth again

app/src/main/java/org/isoron/uhabits/activities/habits/list/views/HabitCardView.java

@@ -21,7 +21,6 @@ package org.isoron.uhabits.activities.habits.list.views;
 
 import android.annotation.*;
 import android.content.*;
-import android.graphics.*;
 import android.graphics.drawable.*;
 import android.os.*;
 import android.support.annotation.*;
@@ -78,7 +77,7 @@ public class HabitCardView extends FrameLayout
     @Override
     public void onModelChange()
     {
-        postInvalidate();
+        refresh();
     }
 
     public void setCheckmarkValues(int checkmarks[])
@@ -100,11 +99,21 @@ public class HabitCardView extends FrameLayout
 
         this.habit = habit;
         checkmarkPanel.setHabit(habit);
+        refresh();
 
         attachToHabit();
         postInvalidate();
     }
 
+    private void refresh()
+    {
+        int color = getActiveColor(habit);
+        label.setText(habit.getName());
+        label.setTextColor(color);
+        scoreRing.setColor(color);
+        checkmarkPanel.setColor(color);
+    }
+
     public void setScore(int score)
     {
         float percentage = (float) score / Score.MAX_VALUE;
@@ -144,21 +153,6 @@ public class HabitCardView extends FrameLayout
         super.onDetachedFromWindow();
     }
 
-    @Override
-    protected void onDraw(Canvas canvas)
-    {
-        if (habit != null)
-        {
-            int color = getActiveColor(habit);
-            label.setText(habit.getName());
-            label.setTextColor(color);
-            scoreRing.setColor(color);
-            checkmarkPanel.setColor(color);
-        }
-
-        super.onDraw(canvas);
-    }
-
     private void attachToHabit()
     {
         if (habit != null) habit.getObservable().addListener(this);
@@ -183,8 +177,6 @@ public class HabitCardView extends FrameLayout
         inflate(context, R.layout.list_habits_card, this);
         ButterKnife.bind(this);
 
-        setWillNotDraw(false);
-
         innerFrame.setOnTouchListener((v, event) -> {
             if (SDK_INT >= LOLLIPOP)
                 v.getBackground().setHotspot(event.getX(), event.getY());

app/src/main/java/org/isoron/uhabits/activities/habits/list/views/HeaderView.java

@@ -78,13 +78,6 @@ public class HeaderView extends LinearLayout
         super.onDraw(canvas);
     }
 
-    @Override
-    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
-    {
-        createButtons();
-        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
-    }
-
     private void createButtons()
     {
         int layout = R.layout.list_habits_header_checkmark;

app/src/main/java/org/isoron/uhabits/utils/Preferences.java

@@ -33,6 +33,8 @@ public class Preferences
 
     private SharedPreferences prefs;
 
+    private Boolean shouldReverseCheckmarks = null;
+
     @Inject
     public Preferences(@AppContext Context context)
     {
@@ -134,17 +136,21 @@ public class Preferences
         prefs.edit().putInt("pref_default_habit_palette_color", color).apply();
     }
 
-    public void setShouldReverseCheckmarks(boolean shouldReverse)
+    public void setShouldReverseCheckmarks(boolean reverse)
     {
+        shouldReverseCheckmarks = null;
         prefs
             .edit()
-            .putBoolean("pref_checkmark_reverse_order", shouldReverse)
+            .putBoolean("pref_checkmark_reverse_order", reverse)
             .apply();
     }
 
     public boolean shouldReverseCheckmarks()
     {
-        return prefs.getBoolean("pref_checkmark_reverse_order", false);
+        if (shouldReverseCheckmarks == null) shouldReverseCheckmarks =
+            prefs.getBoolean("pref_checkmark_reverse_order", false);
+
+        return shouldReverseCheckmarks;
     }
 
     public void updateLastAppVersion()