Help passing an ArrayList of Objects to a new Activity

Your object class should implement parcelable. The code below should get you started.

    public class ObjectName implements Parcelable {

    // Your existing code

        public ObjectName(Parcel in) {
            super(); 
            readFromParcel(in);
        }

        public static final Parcelable.Creator<ObjectName> CREATOR = new Parcelable.Creator<ObjectName>() {
            public ObjectName createFromParcel(Parcel in) {
                return new ObjectName(in);
            }

            public ObjectName[] newArray(int size) {

                return new ObjectName[size];
            }

        };

        public void readFromParcel(Parcel in) {
          Value1 = in.readInt();
          Value2 = in.readInt();
          Value3 = in.readInt();

        }
        public int describeContents() {
            return 0;
        }

        public void writeToParcel(Parcel dest, int flags) {
            dest.writeInt(Value1);
            dest.writeInt(Value2);  
            dest.writeInt(Value3);
       }
    }

To use the above do this:

In 'sending' activity use:

ArrayList<ObjectName> arraylist = new Arraylist<ObjectName>();  
Bundle bundle = new Bundle();  
bundle.putParcelableArrayList("arraylist", arraylist);

In 'receiving' activity use:

Bundle extras = getIntent().getExtras();  
ArrayList<ObjectName> arraylist  = extras.getParcelableArrayList("arraylist");  
ObjectName object1 = arrayList[0];

and so on.

Very Easy way, try the following:

bundle.putSerializable("lstContact", (Serializable) lstObject);
lstObj = (List<Contacts>) bundle.getSerializable("lstContact");

and also you will need to implement your Contact class from Serializable interface. ex :

public class Contact implements Serializable{
   ...
   ...
   ...
}

You have two options:

• Objects in the ArrayList put implement Parceable as required by the method putParcelableArrayList ()

• Or the objects can implement Serializable and use the method putSerializable() to add the ArrayList, ie bundle.putSerializable("arraylist", arraylist);

Android passes Object in Bundle by serializing and deserializing (via Serializable or Parcelable). So all of your Objects you want to pass in a Bundle must implement one of those two interfaces.

Most Object serialize easily with Serializable and it is much simpler to implement Serializable and add a static UID to the class than to write all the methods/classes required for Parcelable.