一个人如何监听来自Android的SyncAdapter进展如何？ [英] How does one listen for progress from Android SyncAdapter?
问题描述
我记得阅读有关广播接收器接口的同步适配器或同步的一些ResultReceiver progress事件。是不是有什么内置在SyncAdapter模式或者是土生土长的？
I recall reading about a broadcast receiver interface from the sync adapter or some ResultReceiver of sync progress events. Is there something built into the SyncAdapter pattern or is it home-grown?
推荐答案
什么工作：
该方法在2010年的谷歌IO会议上提出，的开发的Android REST客户端应用程序是把列到您的ContentProvider作为标记，以指示记录正被取出或放置或等。这允许每个行纺丝器（或其他视觉上的变化），以放置在你的用户界面。你可以做到这一点通过自定义的CursorAdapter驱动一个ListView。您的ContentProvider是勾上根据需要进行标志更改。
The method suggested in a 2010 Google IO session, Developing Android REST client applications is to place columns into your ContentProvider as tags to indicate that a record is being fetched or placed or etc. This allows a per-row spinner (or other visual change) to be placed in your UI. You might do that through a custom CursorAdapter that drives a ListView. Your ContentProvider is on the hook to make the flags change as needed.
有什么不：
您也可以使用<一个href="http://developer.android.com/reference/android/content/ContentResolver.html#addStatusChangeListener%28int,%20android.content.SyncStatusObserver%29"相对=nofollow> SyncStatusObserver - 这是pretty的无用，因为它响应状态的每一个变化，不只是你的特定帐户/ contentauthority对，真的不能告诉你任何东西都除此之外，变化发生。所以，你不能告诉正在同步，并且无法从同步活动结束区分开始同步事件。一文不值。 ：P
You can also use a SyncStatusObserver -- Which is pretty much useless since it responds to every change of status, not just your specific account/contentauthority pair, and really doesn't tell you much anything at all other than that a change occured. So, you can't tell what is being synced, and you can't distinguish "start of sync event" from "end of sync event". Worthless. :P
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