Theme Settings:

- Fix trouble when apps launch for the first time
- Display selected color into settings
- Display msg when color change from settings

app/src/main/java/net/schueller/peertube/activity/SettingsActivity.java

@@ -23,6 +23,8 @@ import static net.schueller.peertube.helper.Constants.THEME_PREF_KEY;
 
 public class SettingsActivity extends AppCompatPreferenceActivity {
 
+    private static String previousThemeColorValue = "";
+
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
@@ -33,6 +35,21 @@ public class SettingsActivity extends AppCompatPreferenceActivity {
         return super.onOptionsItemSelected(item);
     }
 
+    private static String getSelectedColor(Context context, String colorId){
+
+        String res = "Color not found";
+        String [ ] themeArray = context.getResources().getStringArray(R.array.themeValues);
+        String [ ] colorArray = context.getResources().getStringArray(R.array.themeArray);
+
+        for (int i = 0 ; i < themeArray.length ; i++){
+            if (themeArray[i].equals(colorId)){
+                res = colorArray[i];
+                break;
+            }
+        }
+        return res;
+    }
+
     /**
      * A preference value change listener that updates the preference's summary
      * to reflect its new value.
@@ -45,6 +62,19 @@ public class SettingsActivity extends AppCompatPreferenceActivity {
             Toast.makeText(preference.getContext(), R.string.invalid_url, Toast.LENGTH_LONG).show();
             return false;
         }
+        // Check if Theme color has change & Provide selected color
+        else if (preference.getKey().equals("pref_theme")) {
+
+            stringValue = getSelectedColor(preference.getContext(), stringValue);
+
+            if (!previousThemeColorValue.equals("") && !previousThemeColorValue.equals(stringValue)) {
+                Toast.makeText(preference.getContext(), R.string.pref_description_app_theme, Toast.LENGTH_LONG).show();
+            }
+
+            previousThemeColorValue = stringValue;
+            preference.setSummary(stringValue);
+            return true;
+        }
 
         preference.setSummary(stringValue);
 
@@ -96,7 +126,6 @@ public class SettingsActivity extends AppCompatPreferenceActivity {
 
         setupActionBar();
         getFragmentManager().beginTransaction().replace(android.R.id.content, new GeneralPreferenceFragment()).commit();
-
     }
 
     /**
@@ -153,6 +182,7 @@ public class SettingsActivity extends AppCompatPreferenceActivity {
             // updated to reflect the new value, per the Android Design
             // guidelines.
             bindPreferenceSummaryToValue(findPreference("pref_api_base"));
+            bindPreferenceSummaryToValue(findPreference("pref_theme"));
         }
 
         @Override

app/src/main/res/xml/pref_general.xml

@@ -20,7 +20,7 @@
         android:title="@string/pref_title_app_theme"
         android:summary="@string/pref_description_app_theme"
         android:key="pref_theme"
-        android:defaultValue="1"
+        android:defaultValue="AppTheme.ORANGE"
         android:entries="@array/themeArray"
         android:entryValues="@array/themeValues" />