see 12/19 log

Author: Blankj

utilcode/lib/src/main/java/com/blankj/utilcode/util/Utils.java

@@ -11,12 +11,12 @@
 
 import java.lang.reflect.Field;
 import java.lang.reflect.InvocationTargetException;
-import java.util.HashMap;
 import java.util.HashSet;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
 
 /**
  * <pre>
@@ -158,9 +158,9 @@ static boolean isAppForeground() {
     static class ActivityLifecycleImpl implements ActivityLifecycleCallbacks {
 
         final LinkedList<Activity>                        mActivityList      = new LinkedList<>();
-        final HashMap<Object, OnAppStatusChangedListener> mStatusListenerMap = new HashMap<>();
+        final Map<Object, OnAppStatusChangedListener> mStatusListenerMap = new ConcurrentHashMap<>();
 
-        final HashMap<Activity, Set<OnActivityDestroyedListener>> mDestroyedListenerMap = new HashMap<>();
+        final Map<Activity, Set<OnActivityDestroyedListener>> mDestroyedListenerMap = new ConcurrentHashMap<>();
 
         private int     mForegroundCount = 0;
         private int     mConfigCount     = 0;