Good day, this is my QuestionActivity. Class and I want ArrayList<BasicItem> BasicList
to put this on different class and still use it in this activity.
@Override
protected void onCreate(Bundle savedInstanceState) {
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_question);
final ArrayList<BasicItem> BasicList = new ArrayList<>();
BasicList.add(new BasicItem();
BasicList.add(new BasicItem();
BasicList.add(new BasicItem();
BasicList.add(new BasicItem();
My reason to separate this because, in the actual app, this activity become laggy and I'm gonna put 600 items. and I think separating it might help. Thanks in advance.
You just need to create a separate utility class that can be sharable for different activities/fragments), and you can utilize the singleton pattern for this to avoid multiple instantiations.
public class Utility {
ArrayList<BasicItem> BasicList;
private static Utility mUtility;
private Utility() {
BasicList = new ArrayList<>();
BasicList.add(new BasicItem());
BasicList.add(new BasicItem());
BasicList.add(new BasicItem());
BasicList.add(new BasicItem());
}
static Utility newInstance() {
if (mUtility == null) {
mUtility = new Utility();
}
return mUtility;
}
}
And to use it in activity/fragment
Utility utility = Utility.newInstance();
BasicItem item = utility.BasicList.get(0);
You can also consider using the.
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