diff options
| -rw-r--r-- | core/java/android/app/SharedPreferencesImpl.java | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/core/java/android/app/SharedPreferencesImpl.java b/core/java/android/app/SharedPreferencesImpl.java index 86fd7b9..a292ecb 100644 --- a/core/java/android/app/SharedPreferencesImpl.java +++ b/core/java/android/app/SharedPreferencesImpl.java @@ -421,13 +421,15 @@ final class SharedPreferencesImpl implements SharedPreferences { for (Map.Entry<String, Object> e : mModified.entrySet()) { String k = e.getKey(); Object v = e.getValue(); - if (v == this) { // magic value for a removal mutation + // "this" is the magic value for a removal mutation. In addition, + // setting a value to "null" for a given key is specified to be + // equivalent to calling remove on that key. + if (v == this || v == null) { if (!mMap.containsKey(k)) { continue; } mMap.remove(k); } else { - boolean isSame = false; if (mMap.containsKey(k)) { Object existingValue = mMap.get(k); if (existingValue != null && existingValue.equals(v)) { |