CODEWITHSUNDEEP
javaandroid
Newbie
Newbie

Reputation: 163

Pass custom array list of objects

I am trying to pass a custom ArrayList of objects between activites. I keep getting wrong argument errors. Read around on exisitng questions but none of them could resolve the issue.

Could you please point me in the right direction?

CODE BREAKDOWN:

public class object1 implements parcelable{
    public void writeToParcel(Parcel dest, int flags) {
    //things that need to be written

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

        public MoodEvent[] newArray(int size) {
            return new MoodEvent[size];
        }
    };
public class list1{  //** "implements Parceblable" gives error**
      private ArrayList<object1> ArrayList1, ArrayList2; //** Filters used on **ArrayList2
      public void writeToParcel(Parcel out) {
        out.writeTypedList(ArrayList1);
    }


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

        public MoodEvent[] newArray(int size) {
            return new MoodEvent[size];
        }
    };
}

public class someActivity {
.
.
.
mapIntent = new Intent(oldActivity.this, NewActivity.class);
Bundle bundle = new Bundle();

bundle.putParcelableArrayList(moodEventList);   //**wrong argument types on both lines**
mapIntent.putParcelableArrayListExtra("mylist",moodEventList);
.
.
.
}

Upvotes: 0

Views: 191

Answers (3)

Sathish Kumar VG
Sathish Kumar VG

Reputation: 2172

You can try the following code to send and receive custom arraylist of objects from one activity to another.

Send Intent Values:

You can try the follwing code to send parsable arraylist with intent.

 private List<ResourceTypeList> mResourceList;
 public void sendParcableIntent()
 {
    Intent i=new Intent(ResourcePhoneBook.this,ResourceSort.class);
    Bundle toSend = new Bundle();
    toSend.putParcelableArrayList("Data", (ArrayList<? extends Parcelable>)mResourceList);
    i.putExtras(toSend);
    startActivity(i);
 }

Receive Intent Values:

You can get parcelable arraylist with normal ArrayList format.

ArrayList mArraylist1;
Bundle bdl = getIntent().getExtras();
mArraylist1 = bdl.getParcelableArrayList("Data");

parcelable model class:

public class ResourceTypeList implements Parcelable {

    @SerializedName("id")
    @Expose
    private Integer id;
    @SerializedName("resource_type")
    @Expose
    private String resourceType;

    /**
     *
     * @return
     *     The id
     */
    public Integer getId() {
        return id;
    }

    /**
     *
     * @param id
     *     The id
     */
    public void setId(Integer id) {
        this.id = id;
    }

    /**
     *
     * @return
     *     The resourceType
     */
    public String getResourceType() {
        return resourceType;
    }

    /**
     *
     * @param resourceType
     *     The resource_type
     */
    public void setResourceType(String resourceType) {
        this.resourceType = resourceType;
    }

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

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeString(resourceType);
        dest.writeInt(id);

    }

   public ResourceTypeList(String resourceType) {
       this.resourceType = resourceType;

   }
   protected ResourceTypeList(Parcel in) {
       resourceType = in.readString();
       id= in.readInt();

   }
    public static final Creator<ResourceTypeList> CREATOR = new Creator<ResourceTypeList>() {
        @Override
        public ResourceTypeList createFromParcel(Parcel source) {
            return new ResourceTypeList(source);
        }

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

Upvotes: 0

9spl
9spl

Reputation: 357

Try this 

public class YOUR_CLASS_NAME implements Serializable

Passing data through intent using Serializable

Upvotes: 0

RobCo
RobCo

Reputation: 6495

putParcelableArrayList will expect an ArrayList containing objects that implement the Parcelable interface.
Assuming your object1 class correctly implements this, you can use just a regular ArrayList<object1> instance and you don't need the custom list1 class.

If you really want to though, and your list1 class also implements the interface, you can use the putParcelable method, since your list is just a single parcelable now.

Upvotes: 2

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