PackageManager.getInstalledPackages（）返回空列表 [英] PackageManager.getInstalledPackages() returns empty list

问题描述

我遇到了一个非常奇怪的情况下使用PackageManager.getInstalledPackages（）方法时。我第一次启动我的活动我得到的所有已安装的软件包的有效名单。但我第二次启动我的活动我得到一个空列表...怎么可能会导致这？

I am running into a very strange situation when using the PackageManager.getInstalledPackages() method. The first time I launch my activity I get a valid list of all the installed packages. But the second time I launch my activity I get an empty list... What could possibly be causing this?

我用这code，以获取列表： 名单pkgList = getPackageManager（）getInstalledPackages（PackageManager.GET_ACTIVITIES）;

I am using this code to get the list: List pkgList = getPackageManager().getInstalledPackages(PackageManager.GET_ACTIVITIES);

我建立对1.6的SDK 1.5兼容+

I am building against the 1.6 SDK with compatibility for 1.5+

在此先感谢您的任何建议/帮助...我真的感到困惑，原因，并不能认为我在做什么错。

Thanks in advance for any suggestions/help... I'm really baffled as to the cause and can't think of what I'm doing wrong.

推荐答案

也许 PackageManager 需要在主应用程序线程上调用，出于某种原因。使用它，我没有尝试过的的AsyncTask 。

Perhaps the PackageManager needs to be invoked on the main application thread, for some reason. I haven't tried using it from an AsyncTask.

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