fix issue #194

java.util.ConcurrentModificationException

booster-android-instrument-shared-preferences/src/main/java/com/didiglobal/booster/instrument/sharedpreferences/BoosterSharedPreferences.java

@@ -288,7 +288,7 @@ public final class BoosterSharedPreferences implements SharedPreferences {
 
             private void notifyListeners(final Collection<String> keys) {
                 if (Looper.myLooper() == Looper.getMainLooper()) {
-                    final Set<OnSharedPreferenceChangeListener> listeners = new HashSet<>(mListeners.keySet());
+                    final OnSharedPreferenceChangeListener[] listeners = mListeners.keySet().toArray(new OnSharedPreferenceChangeListener[0]);
                     for (final OnSharedPreferenceChangeListener listener : listeners) {
                         for (String key : keys) {
                             listener.onSharedPreferenceChanged(BoosterSharedPreferences.this, key);
@@ -313,4 +313,4 @@ public final class BoosterSharedPreferences implements SharedPreferences {
             loadFromXml();
         }
     }
-}
\ No newline at end of file
+}