Arraylist Always Loaded With User Info From Firebase Database Regardless Of Which User Is Signed In?

In showdata method witch load FirebaseUser info when I run the app and signed in with any user , arrayList in the method is always loaded with User_03 info , debugging show that:

Solution 1:

This is happening because you are have declared the ArrayList<String> arrayList=new ArrayList<>(); inside the for loop. This means that you are creating a new instance of ArrayList class every time you iterate.

In order to solve this, just move the decration outside for loop like this:

privatevoidshowData(DataSnapshot dataSnapshot) {
  ArrayList<String> arrayList=new ArrayList<>(); //Moved outsidefor(DataSnapshot ds : dataSnapshot.getChildren()){

      uInfo.setName(ds.getValue(UserInformations.class).getName());
      uInfo.setEmail(ds.getValue(UserInformations.class).getEmail()); 
      uInfo.setPhone_num(ds.getValue(UserInformations.class).getPhone_num());

      int listSize = arrayList.size();
      arrayList.add(uInfo.getName());
      arrayList.add(uInfo.getEmail());
      arrayList.add(uInfo.getPhone_num()); 
      ArrayAdapter<String> adapter =new ArrayAdapter<>(this,android.R.layout.simple_list_item_1,arrayList);
      userInfolist.setAdapter(adapter);
      toastMassege("its Done ");
  }
}