分享DBAdapter活动之间 [英] Share DBAdapter Between Activities

问题描述

好了，所以在我的应用我有一个DBAdapter类，它的工作好。在主要的活动，我有一个变量 this.dbAdapter 。我想与大家分享与其他Activites这个变量，所以我不必在创建活动每一个新的DBAdapter。

Ok so in my application I have a DBAdapter class, that does its job well. In the main Activity, I have a variable this.dbAdapter. I would like to share this variable with other Activites, so I don't have to create a new DBAdapter in each Activity.

怎么会是这样做的最佳方式？我应该做的事情，比如 intent.putExtra（DbAdapter，this.dbAdapter）; ？或者是有，我应该去做另一种方式？

How would be the best way of doing this? Should I do something like intent.putExtra("DbAdapter", this.dbAdapter);? Or is there another way that I should go about it?

谢谢！

推荐答案

这与Android集成的最佳解决方案是的创建内容提供商并有每个活动查询它，使用适配器，以配合您的查询结果以您的小部件。然而，你可以只用建立在每个活动新DBAdapter，确保当活动暂停，关闭所有资源度日。如果你需要在你的适配器坚持的状态，你可能做错了什么。

The solution that integrates best with Android is to create a Content Provider and have each activity query it, using an Adapter to tie your query results to your widgets. However, you can get by with just creating a new DBAdapter in each Activity, making sure to close all resources when the Activity is paused. If you need to persist state in your Adapter, you're probably doing something wrong.

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