Do not use habit color as primary color on dark themes

app/src/main/java/org/isoron/uhabits/ShowHabitActivity.java

@@ -21,11 +21,13 @@ package org.isoron.uhabits;
 
 import android.app.ActionBar;
 import android.content.ContentUris;
+import android.graphics.Color;
 import android.graphics.drawable.ColorDrawable;
 import android.net.Uri;
 import android.os.Bundle;
 
 import org.isoron.uhabits.helpers.ColorHelper;
+import org.isoron.uhabits.helpers.UIHelper;
 import org.isoron.uhabits.models.Habit;
 
 public class ShowHabitActivity extends BaseActivity
@@ -44,11 +46,17 @@ public class ShowHabitActivity extends BaseActivity
         if(actionBar != null && getHabit() != null)
         {
             actionBar.setTitle(getHabit().name);
-            if (android.os.Build.VERSION.SDK_INT >= 21)
+
+            if (android.os.Build.VERSION.SDK_INT >= 21 &&
+                    UIHelper.getStyledBoolean(this, R.attr.useHabitColorAsPrimary))
             {
                 int androidColor = ColorHelper.getColor(this, getHabit().color);
                 ColorDrawable drawable = new ColorDrawable(androidColor);
                 actionBar.setBackgroundDrawable(drawable);
+
+                int color = ColorHelper.getColor(this, habit.color);
+                int darkerHabitColor = ColorHelper.mixColors(color, Color.BLACK, 0.75f);
+                getWindow().setStatusBarColor(darkerHabitColor);
             }
         }
 

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

@@ -21,7 +21,6 @@ package org.isoron.uhabits.fragments;
 
 import android.app.Fragment;
 import android.content.SharedPreferences;
-import android.graphics.Color;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
 import android.support.annotation.Nullable;
@@ -170,15 +169,6 @@ public class ShowHabitFragment extends Fragment
 
     private void updateHeaders(View view)
     {
-        if(habit == null | activity == null) return;
-
-        if (android.os.Build.VERSION.SDK_INT >= 21)
-        {
-            int color = ColorHelper.getColor(getActivity(), habit.color);
-            int darkerHabitColor = ColorHelper.mixColors(color, Color.BLACK, 0.75f);
-            activity.getWindow().setStatusBarColor(darkerHabitColor);
-        }
-
         updateColor(view, R.id.tvHistory);
         updateColor(view, R.id.tvOverview);
         updateColor(view, R.id.tvStrength);
@@ -188,7 +178,7 @@ public class ShowHabitFragment extends Fragment
 
     private void updateColor(View view, int viewId)
     {
-        if(habit == null) return;
+        if(habit == null || activity == null) return;
 
         TextView textView = (TextView) view.findViewById(viewId);
         int androidColor = ColorHelper.getColor(activity, habit.color);

app/src/main/java/org/isoron/uhabits/helpers/UIHelper.java

@@ -181,4 +181,13 @@ public abstract class UIHelper
         return color;
     }
 
+    public static boolean getStyledBoolean(Context context, int attrId)
+    {
+        int[] attrs = new int[]{ attrId };
+        TypedArray ta = context.obtainStyledAttributes(attrs);
+        boolean bool = ta.getBoolean(0, false);
+        ta.recycle();
+
+        return bool;
+    }
 }

app/src/main/res/values-v21/styles.xml

@@ -38,7 +38,7 @@
         <item name="fadedTextColor">@color/grey_600</item>
         <item name="inactiveCheckmarkColor">@color/grey_300</item>
         <item name="secondaryTextColor">@color/grey_800</item>
-
+        <item name="useHabitColorAsPrimary">true</item>
         <item name="palette">@array/lightPalette</item>
     </style>
 
@@ -60,6 +60,7 @@
         <item name="fadedTextColor">@color/grey_500</item>
         <item name="inactiveCheckmarkColor">@color/grey_700</item>
         <item name="secondaryTextColor">@color/grey_100</item>
+        <item name="useHabitColorAsPrimary">false</item>
 
         <item name="palette">@array/darkPalette</item>
     </style>

app/src/main/res/values/attrs.xml

@@ -26,6 +26,6 @@
     <attr name="secondaryTextColor" format="reference"/>
     <attr name="inactiveCheckmarkColor" format="reference"/>
     <attr name="highlightedBackgroundColor" format="reference"/>
+    <attr name="useHabitColorAsPrimary" format="boolean"/>
     <attr name="palette" format="reference"/>
-
 </resources>