与进度活动 - ＆GT;服务 - ＆GT; AsyncTask的下载 - 但如何更新进度？ [英] Activity with ProgressBar -> Service -> AsyncTask for downloading - but how to update the progress?

问题描述

这是当前状态/情况：我有一个活动结合创造AsyncTasks它下载各种网络资源的服务。效果很好，但当然的进度条显示什么。

this is the current state/situation: I have an Activity which binds a Service which creates AsyncTasks which downloads various web resources. That works well, but of course the ProgressBar shows nothing.

previously我有它创建了下载的一些东西，一个AsyncTask的一个活动。该AsyncTask的得到它保存进度栏查看。所以我可以更新使用onProgressUpdate和publishProgress的进展。很显然，因为我没有提及进度，这并不正常工作下去了。

Previously i had an Activity which created an AsyncTask which downloaded some stuff. The AsyncTask got the View which holds the ProgressBar. So i could update the progress using onProgressUpdate and publishProgress. Obviously this doesn't work any longer because I have no reference to the ProgressBar.

那么，你有没有关于如何更新的进展？任何想法

So, do you have any idea on how to update the progress?

在此先感谢。

推荐答案

有服务通知，然后运行活动有关从 onProgressUpdate进度（）。这可能是通过广播意图，或通过由活动注册一个回调对象（和未注册的时候，活动被破坏，如屏幕旋转）。

Have the Service notify the then-running Activity about the progress from onProgressUpdate(). That could be via a broadcast Intent, or via a callback object registered by the Activity (and unregistered when the Activity is destroyed, such as on a screen rotation).

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