After Arraylist.add() In A Loop, All Elements Are Identical. Why? February 27, 2024 Post a Comment If I do this [quasi-java-code]: while (loop) { localObject = getDataForObject(); globalPublicStaticArrayList.add(localObject); } All the elements in globalPuSolution 1: Java uses call by value, but here those values are references to objects.What you are adding to the list is not a copy of the object, but a copy of the reference. Your method returned the same object each time you called it. It probably should return a new object each time, then you wouldn't need this workaround. Solution 2: globalPublicStaticArrayList<Object>.add(localObject); Copyhere you are passing the localObject reference. You you want a copy of every objects you should create a new object at every iterationBaca JugaProtect Android Application From PiracyHow To Get The Arraylist Out Android StudioHow To Properly Add Data To Arraylist - AndroidSolution 3: In getDataForObject() may be you are not creating "new" object of return type. Because of that all objects are pointing to same address. Share You may like these postsAndroid Finding Files On The SdcardAsynctaskloader For Http Requests To Handle Orientation Changes, Using Generics, InheritanceBroadcast Receiver Is Not Working In Lollipop After Application Closed From Task ManagerAsync And Listview Android Post a Comment for "After Arraylist.add() In A Loop, All Elements Are Identical. Why?"