Avoid porting null keys when copying preferences into new system

Testing on Fishlake shows certain preferences are of 'null' type
in shared preferences. Avoid an NPE on porting a null. From testing,
this can happen with focus mode, best to just skip porting the key
and let the app use a default.

Bug: 17829562
Change-Id: I483cb5beb160d3fb7fc8a42aa5085531e3fccb63
(cherry picked from commit d560aabf7baef81a14e78341af81994efc1d4f17)

1 files changed, 6 insertions, 2 deletions

diff --git a/src/com/android/camera/settings/AppUpgrader.java b/src/com/android/camera/settings/AppUpgrader.java
index 8e4d1db2e..bb15d38dd 100644
--- a/src/com/android/camera/settings/AppUpgrader.java
+++ b/src/com/android/camera/settings/AppUpgrader.java
@@ -334,8 +334,12 @@ public class AppUpgrader extends SettingsUpgrader {
         Map<String, ?> entries = oldPrefs.getAll();
         for (Map.Entry<String, ?> entry : entries.entrySet()) {
             String key = entry.getKey();
-            String value = entry.getValue().toString();
-            newPrefs.edit().putString(key, value).apply();
+            Object value = entry.getValue();
+            if (value != null) {
+                newPrefs.edit().putString(key, String.valueOf(value)).apply();
+            } else {
+                Log.w(TAG, "skipped upgrade for null key " + key);
+            }
         }
     }