commit 5da78f452c94809804adebcdbc0a193fcedfb5ef
author Sunny Goyal <sunnygoyal@google.com> Fri Jun 17 14:00:22 2016 -0700
committer Sunny Goyal <sunnygoyal@google.com> Thu Jun 23 15:05:07 2016 -0700
tree 2b4d4e521b672f7bd27d15211d995b7a3c7505f3
parent 0d21daace200502c45e0c976dd6a91eea03808e0

Calling start/stop listening in onStart/onStop

AppWidgetHost in N-MR1 was changed to make start/stop lisenting calls
light weight, which allows launcher to avoid getting unnecessary
updates when its not visible

Bug: 23892701
Change-Id: I1f40a1ddc51a9eee304e17e72106bc75afe6c1bc

src/com/android/launcher3/Launcher.java

diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 97af37c..7a4e4f0 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -950,6 +950,10 @@
         if (mLauncherCallbacks != null) {
             mLauncherCallbacks.onStop();
         }
+
+        if (Utilities.isNycMR1OrAbove()) {
+            mAppWidgetHost.stopListening();
+        }
     }
 
     @Override
@@ -960,6 +964,10 @@
         if (mLauncherCallbacks != null) {
             mLauncherCallbacks.onStart();
         }
+
+        if (Utilities.isNycMR1OrAbove()) {
+            mAppWidgetHost.startListening();
+        }
     }
 
     @Override

src/com/android/launcher3/LauncherAppWidgetHost.java

diff --git a/src/com/android/launcher3/LauncherAppWidgetHost.java b/src/com/android/launcher3/LauncherAppWidgetHost.java
index 3bb7381..d3e5350 100644
--- a/src/com/android/launcher3/LauncherAppWidgetHost.java
+++ b/src/com/android/launcher3/LauncherAppWidgetHost.java
@@ -67,12 +67,6 @@
         }
     }
 
-    @Override
-    public void stopListening() {
-        super.stopListening();
-        clearViews();
-    }
-
     public void addProviderChangeListener(Runnable callback) {
         mProviderChangeListeners.add(callback);
     }