安卓：通过开展活动​​或服务传递复杂的数据结构 [英] Android: Pass complex data structures through activities or services

问题描述

您好我想从我的服务类传递复杂的数据结构来Activity类。

Hi I want to pass complex data structures from my Service class to Activity class.

我创建类序列化：

        class SaveMe implements Serializable {

        private static final long serialVersionUID = 1L;

        static final int test = 1234;

        private int user;

        private String name;

        private double score;


        public SaveMe() {}
    }

和我把它放在包

Bundle bundle = new Bundle();
bundle.putSerializable("serializable", new SaveMe());

我如何将这些信息发送到活动类？

HOW can I send this information to Activity class ?

我尝试这个code：

Intent mapIntent = new Intent(INTENT_MAP);     
mapIntent.putExtras(bundle);

和比我想用传送给BroadcastReciver：

And than I want to send to BroadcastReciver using:

 sendBroadcast(mapIntent);

但是我收到的力量错误！

But I receive force error!

我应该使用广播接收器，以这种数据结构传递给我的活动？

Should I use BroadcastReceiver to pass this data structure to my activity?

如何发送到另一个活动？

How to send to another activity?

感谢

推荐答案

您可以通过存储扩展应用程序类，并包括一个getter返回存储在那里的​​现有SaveMe全球范围内所需的任何数据。您可以从您的活动与

You can store any data required globally by extending the Application class and including a getter to return the existing SaveMe stored there. You can access this from your activity with

private MyApplication application;

@Override
   public void onCreate(final Bundle savedInstanceState) {
                ........
   this.application = (MyApplication) this.getApplication();
                ......
}

// elsewhere in your code
SaveMe mySaveMe = application.getSaveMe();

这篇文章解释得很清楚如何做到这一点： HTTP：//www.screaming-penguin。 COM /节点/ 7746 你可以忽略的东西有关AsyncTask的（虽然我敢肯定，你会发现在某些时候需要的），只是集中在部分有关扩展应用程序类。

This article explains very clearly how to do this: http://www.screaming-penguin.com/node/7746 You can ignore the stuff about the AsyncTask (although I'm sure you will find a need for that at some point) and just concentrate on the part about extending the application class.

这篇关于安卓：通过开展活动​​或服务传递复杂的数据结构的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！