我在这个代码上得到错误

listObjects = (Listitem) extras.getParcelable(OBJECT_LIST);

字符串
这是我传递意图的方式

Intent intent = new Intent(mcontext,SingleObjectActivity.class);
intent.putParcelableArrayListExtra("Object_list", personArrayList);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
mcontext.startActivity(intent);

型
这是第二个活动

public class SingleObjectActivity extends Activity
{
    public static final String OBJECT_LIST = "Object_list";
    private ArrayList<Listitem> Objects;
    public ImageView imgview;
    private Listitem listObjects;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.singleobject);
        Bundle extras = getIntent().getExtras();
        imgview = (ImageView) findViewById(R.id.funnyimage);
        if (extras.containsKey(OBJECT_LIST)) {
            this.listObjects = (Listitem) extras.getParcelable(OBJECT_LIST);
        } else {
            this.listObjects = null;
        }
        if (this.listObjects != null) {
            Picasso.
                    with(getApplicationContext()).
                    load(this.listObjects.getUrl())
                            //load()
                    .placeholder(R.drawable.logo)
                    .fit()
                    .noFade()
                    .into(imgview);
        }
    }
}

型
这是listitem

public class Listitem implements Parcelable {
    private int order;
    private String id;
    private String url;
    private String userName;
    private int likes;
    //String name;
   public Listitem(Parcel in){
        this.id = in.readString();
        this.url = in.readString();
       //   this.name = in.readString();
    }
    public Listitem(int order, String id, String url, String userName, int likes) {
        this.id = id;
        this.url = url;
       this.userName = userName;
       this.order = order;
       this.likes = likes;
    }
    @Override
    public int describeContents() {
        return 0;
    }
    public void setUrl(String url) {
        this.url = url;
    }
    public String getUrl() {
        return url;
    }
    public void setId(String id) {
        this.id = id;
    }
    public String getId() {
        return id;
    }
    public int getLikes() {
        return likes;
    }
    public void setLikes(int likes) {
        this.likes = likes;
    }
    @Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeString(this.id);
        // dest.writeString(this.name);
        dest.writeString(this.url);
    }
    public static final Parcelable.Creator<Listitem> CREATOR = new Parcelable.Creator<Listitem>() {
        public Listitem createFromParcel(Parcel in) {
            return new Listitem(in);
        }
        public Listitem[] newArray(int size) {
            return new Listitem[size];
        }
    };
    public String getUserName() {
        return userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
    public int getOrder() {
        return order;
    }
    public void setOrder(int order) {
        this.order = order;
    }

型