修改单例写法

371718330@qq.com · 371718330@qq.com · commit f21b6757bcfb · 2017-08-02T10:23:02.000+08:00
diff --git a/CommonUtil/src/main/java/com/jingewenku/abrahamcaijin/commonutil/AppDavikActivityMgr.java b/CommonUtil/src/main/java/com/jingewenku/abrahamcaijin/commonutil/AppDavikActivityMgr.java
@@ -31,7 +31,11 @@ public class AppDavikActivityMgr {
      */
     public static AppDavikActivityMgr getScreenManager() {
         if (instance == null) {
-            instance = new AppDavikActivityMgr();
+            synchronized (AppDavikActivityMgr.class){
+                if (instance == null) {
+                    instance = new AppDavikActivityMgr();
+                }
+            }
         }
         return instance;
     }

Original file line number	Diff line number	Diff line change
`@@ -31,7 +31,11 @@ public class AppDavikActivityMgr {`
`31`	`31`	`*/`
`32`	`32`	`public static AppDavikActivityMgr getScreenManager() {`
`33`	`33`	`if (instance == null) {`
`34`		`- instance = new AppDavikActivityMgr();`
	`34`	`+ synchronized (AppDavikActivityMgr.class){`
	`35`	`+ if (instance == null) {`
	`36`	`+ instance = new AppDavikActivityMgr();`
	`37`	`+ }`
	`38`	`+ }`
`35`	`39`	`}`
`36`	`40`	`return instance;`
`37`	`41`	`}`