How to initialize arraylist which store in a Pojo class in another activity?

Question

I want to store the data in a ArrayList and access it in another class,but when when I access the arraylist,the arraylist.size() is 0.Means I didn\'t a

Answer 1

change class like this:

public class Item implements Parcelable{
   private String name;
   private String body;
   private String profileImage;

public Item(){

}

public Item(Parcel in) {
            name = in.readString();
            body = in.readString();
            profileImage = in.readString();
        }


 @Override
        public int describeContents() {
            return 0;
        }


        @Override
        public void writeToParcel(Parcel dest, int flags) {
            dest.writeString(name);
            dest.writeString(body);
            dest.writeString(profileImage);
        }

        @SuppressWarnings("unused")
        public static final Parcelable.Creator CREATOR = new Parcelable.Creator() {
            @Override
            public Item createFromParcel(Parcel in) {
                return new Item(in);
            }

            @Override
            public Item[] newArray(int size) {
                return new Item[size];
            }
        };


public Item(String body,String name,String profileImage){
  this.body = body;
  this.name = name;
  this.profileImage = profileImage;
}

Now in Class A:

ArrayList mDATA = new ArrayList<>();

/******   add values in array list  ****/

                Intent i = new Intent(CLASS_A.this, CLASS_B.class);
                i.putParcelableArrayListExtra("ARRAY_DATA", mDATA);
                startActivity(i);

Now in Class B, get list:

Intent intent = getIntent();
    ArrayList mDATAFROMA = new ArrayList<>();
     try {
                    mDATAFROMA = intent.getParcelableArrayListExtra("ARRAY_DATA");
                    Log.d("ListSize",String.valueOf(mDATAFROMA.size()));
                } catch (Exception e) {
                    e.printStackTrace();
                }

For fragement pass like:

Bundle args = new Bundle();
        args.putParcelableArrayList("GET_LIST", (ArrayList) mDATA);
        fragmentDemo.setArguments(args);

And in fragment fetch:

ArrayList mDATAFROMA = new ArrayList<>(); 

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Bundle pb=getArguments();
        mDATAFROMA = pb.getParcelableArrayList("GET_LIST"); 
    }