Question

将parcelable数据从一个活动传递到另一个活动，而在Activity2中我需要获取传递的数据。部分修改（arraylist部分）

我设置了这些值年份19.99 虽然收到这样的结果 null null 1.3796130171011302E-306

 Intent intent = new Intent(getActivity(), Activity2.class);
 intent.putExtra("SELECTED_ITEM", item);


public class Activity2 extends FragmentActivity 

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    Intent data = getIntent();
    selectedItem = data.getExtras().getParcelable("SELECTED_ITEM");

}
}


@Element(name = "data")
public class Data  implements Parcelable {
    @Element(name = "ID")
    private String id;
    @ElementList(name = "iap_subscription_packages", required = false)
    private ArrayList<Subscription> iapSubscription;



    Data() {
    }

    Data(Parcel in) {
        readFromParcel(in);
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }
    public ArrayList<Subscription> getSubscription() {
        return subscription;
    }

    public void setSubscription(ArrayList<Subscription> subscription) {
        this.iapSubscription = iapSubscription;
    }

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

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

    }

    private void readFromParcel(Parcel in) {

        id = in.readString();
        iapSubscription = new ArrayList<Subscription>();
        if (iapSubscription != null) {
            in.readTypedList(iapSubscription, Subscription.CREATOR);
        }
    }

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

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


   };

}




@Element(name = "package")
public class Subscription  implements Parcelable {
    Subscription() {
    }

    Subscription(Parcel in) {
        readFromParcel(in);
    }

    @Element(name = "cycle", required = false)
    private String cycle;
    @Element(name = "name", required = false)
    private String name;
    @Element(name = "price", required = false)
    private double subscriptionPrice;

    public String getCycle() {
        return cycle;
    }

    public void setCycle(String cycle) {
        this.cycle = cycle;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public double getSubscriptionPrice() {
        return subscriptionPrice;
    }

    public void setSubscriptionPrice(double subscriptionPrice) {
        this.subscriptionPrice = subscriptionPrice;
    }
@Override
public int describeContents() {
    return 0;
}

@Override
public void writeToParcel(Parcel dest, int flags) {

    dest.writeString(cycle);
    dest.writeString(name);
    dest.writeDouble(subscriptionPrice);
    Log.i("subscription", "writeToParcel " + cycle + " " + name + " " + subscriptionPrice);
}

private void readFromParcel(Parcel in) {

   cycle = in.readString();
    name = in.readString();
    subscriptionPrice = in.readDouble();
    Log.i("subscription", "readFromParcel " + cycle + " " + name + " " + subscriptionPrice);
}

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

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

Answer 1

您发布的代码是您实际测试的内容吗？

此方法有错误：

public void setSubscription(ArrayList<Subscription> subscription) {
    this.iapSubscription = iapSubscription;
}

你可能想要这个：

public void setSubscription(ArrayList<Subscription> subscription) {
    this.iapSubscription = subscription;
}

我复制了你的代码并测试了与Parceleable相关的部分。这似乎是正确的。我能够打包和取消包含订阅的ArrayList。

如果您仍然遇到问题，请发布您为意图构建捆绑包的代码。

为什么从一个活动传递可分割数据而在另一个活动中接收它可以部分修改？

1 个答案: