Add black background to Dark Theme

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/GBApplication.java

@@ -975,6 +975,10 @@ public class GBApplication extends Application {
                         && (umm.getNightMode() == UiModeManager.MODE_NIGHT_YES));
     }
 
+    public static boolean isAmoledBlackEnabled() {
+        return prefs.getBoolean("pref_key_theme_amoled_black", false);
+    }
+
     public static int getTextColor(Context context) {
         TypedValue typedValue = new TypedValue();
         Resources.Theme theme = context.getTheme();

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/AbstractGBActivity.java

@@ -71,9 +71,15 @@ public abstract class AbstractGBActivity extends AppCompatActivity implements GB
     public static void init(GBActivity activity, int flags) {
         if (GBApplication.isDarkThemeEnabled()) {
             if ((flags & NO_ACTIONBAR) != 0) {
-                activity.setTheme(R.style.GadgetbridgeThemeDark_NoActionBar);
+                if (GBApplication.isAmoledBlackEnabled())
+                    activity.setTheme(R.style.GadgetbridgeThemeBlack_NoActionBar);
+                else
+                    activity.setTheme(R.style.GadgetbridgeThemeDark_NoActionBar);
             } else {
-                activity.setTheme(R.style.GadgetbridgeThemeDark);
+                if (GBApplication.isAmoledBlackEnabled())
+                    activity.setTheme(R.style.GadgetbridgeThemeBlack);
+                else
+                    activity.setTheme(R.style.GadgetbridgeThemeDark);
             }
         } else {
             if ((flags & NO_ACTIONBAR) != 0) {

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/SettingsActivity.java

@@ -203,6 +203,8 @@ public class SettingsActivity extends AbstractSettingsActivity {
 
         });
 
+
+
         pref = findPreference("language");
         pref.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
             @Override
@@ -393,6 +395,27 @@ public class SettingsActivity extends AbstractSettingsActivity {
         audioPlayer.setEntries(newEntries);
         audioPlayer.setEntryValues(newValues);
         audioPlayer.setDefaultValue(newValues[0]);
+
+        final Preference theme = (ListPreference) findPreference("pref_key_theme");
+        final Preference amoled_black = findPreference("pref_key_theme_amoled_black");
+
+        String selectedTheme = prefs.getString("pref_key_theme", SettingsActivity.this.getString(R.string.pref_theme_value_system));
+        if (selectedTheme.equals("light"))
+            amoled_black.setEnabled(false);
+        else
+            amoled_black.setEnabled(true);
+
+        theme.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
+            @Override
+            public boolean onPreferenceChange(Preference preference, Object newVal) {
+                final String val = newVal.toString();
+                if (val.equals("light"))
+                    amoled_black.setEnabled(false);
+                else
+                    amoled_black.setEnabled(true);
+                return true;
+            }
+        });
     }
 
     @Override

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

@@ -14,6 +14,7 @@
     <color name="secondarytext" type="color">#ff808080</color>
     <color name="tertiarytext_light" type="color">#ffd0d0d0</color>
     <color name="tertiarytext_dark" type="color">#ff606060</color>
+    <color name="tertiarytext_black" type="color">#000000</color>
 
     <color name="divider" type="color">#1f000000</color>
 

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

@@ -111,6 +111,7 @@
     <string name="pref_theme_light">Light</string>
     <string name="pref_theme_dark">Dark</string>
     <string name="pref_theme_system">System</string>
+    <string name="pref_theme_black_background">Use black background in Dark Theme</string>
     <string name="pref_title_language">Language</string>
     <string name="pref_title_minimize_priority">Hide the Gadgetbridge notification</string>
     <string name="pref_summary_minimize_priority_off">The icon in the status bar and the notification in the lockscreen are shown</string>

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

@@ -47,6 +47,30 @@
 
     </style>
 
+    <!-- black theme -->
+    <style name="GadgetbridgeThemeBlack" parent="Theme.AppCompat">
+        <item name="textColorPrimary">@color/primarytext_dark</item>
+        <item name="textColorSecondary">@color/secondarytext</item>
+        <item name="textColorTertiary">@color/tertiarytext_dark</item>
+        <item name="android:windowBackground">@android:color/black</item>
+
+        <item name="colorPrimary">@color/primary_dark</item>
+        <item name="colorPrimaryDark">@color/primarydark_dark</item>
+        <item name="colorAccent">@color/accent</item>
+
+        <item name="android:buttonStyle">@style/ButtonDark</item>
+        <item name="buttonStyle">@style/ButtonDark</item>
+
+        <item name="chart_deep_sleep">@color/chart_deep_sleep_dark</item>
+        <item name="chart_light_sleep">@color/chart_light_sleep_dark</item>
+        <item name="chart_activity">@color/chart_activity_dark</item>
+        <item name="chart_not_worn">@color/chart_not_worn_dark</item>
+        <item name="alternate_row_background">@color/alternate_row_background_dark</item>
+        <item name="sports_activity_summary_background">@color/alternate_row_background_dark</item>
+
+    </style>
+
+
     <style name="ButtonDark" parent="Widget.AppCompat.Button.Colored">
         <item name="android:textColor">@color/btn_dark</item>
     </style>
@@ -56,6 +80,12 @@
         <item name="windowNoTitle">true</item>
     </style>
 
+    <style name="GadgetbridgeThemeBlack.NoActionBar">
+        <item name="windowActionBar">false</item>
+        <item name="windowNoTitle">true</item>
+    </style>
+
+
     <style name="GadgetbridgeTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
 
     <style name="GadgetbridgeTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />

app/src/main/res/xml/preferences.xml

@@ -31,13 +31,21 @@
             android:key="audio_player"
             android:title="@string/pref_title_audio_player"
             android:summary="%s" />
-        <ListPreference
+
-            android:key="pref_key_theme"
+        <PreferenceScreen android:title="@string/pref_title_theme">
-            android:title="@string/pref_title_theme"
+            <ListPreference
-            android:entries="@array/pref_theme_options"
+                android:defaultValue="@string/pref_theme_value_light"
-            android:entryValues="@array/pref_theme_values"
+                android:entries="@array/pref_theme_options"
-            android:defaultValue="@string/pref_theme_value_light"
+                android:entryValues="@array/pref_theme_values"
-            android:summary="%s" />
+                android:key="pref_key_theme"
+                android:summary="%s"
+                android:title="@string/pref_title_theme" />
+            <CheckBoxPreference
+                android:defaultValue="false"
+                android:key="pref_key_theme_amoled_black"
+                android:layout="@layout/preference_checkbox"
+                android:title="@string/pref_theme_black_background" />
+        </PreferenceScreen>
 
         <PreferenceScreen
             android:key="language_category"