Add explanation for customizing apps

Settings->Display & LEDs->Notification light->Apps

Currently this is header only if no apps are added yet.
Populate it with an explanation when it's empty.

Change-Id: I83193dfdd01f05bcd1d597033ef710a1b0eb7e82

1 files changed, 12 insertions, 0 deletions

diff --git a/src/com/android/settings/notificationlight/NotificationLightSettings.java b/src/com/android/settings/notificationlight/NotificationLightSettings.java
index 95a354d26..c4b55d440 100644
--- a/src/com/android/settings/notificationlight/NotificationLightSettings.java
+++ b/src/com/android/settings/notificationlight/NotificationLightSettings.java
@@ -284,6 +284,18 @@ public class NotificationLightSettings extends SettingsPreferenceFragment implem
                     // Do nothing
                 }
             }
+
+            /* Display a pref explaining how to add apps */
+            if (mPackages.size() == 0) {
+                String summary = getResources().getString(
+                        R.string.notification_light_no_apps_summary);
+                String useCustom = getResources().getString(
+                        R.string.notification_light_use_custom);
+                Preference pref = new Preference(context);
+                pref.setSummary(String.format(summary, useCustom));
+                pref.setEnabled(false);
+                mApplicationPrefList.addPreference(pref);
+            }
         }
     }