packageManager.getInstalledPackages（0）不返回所有的应用程序

问题描述

我用

PackageManager packageManager = getPackageManager();
List<PackageInfo> mApps = packageManager.getInstalledPackages(0);

检索所有安装的应用程序列表。但是，该列表不包含所有安装的应用程序，有的（如Twitter，例如）失踪。

to retrieve a list of all installed apps. However, the list doesn't contain all installed apps, some (like Twitter, for example) are missing.

要测试这一点，我使用

int length = mApps.size();
for(int i=0; i<length; i++){
    PackageInfo info = mApps.get(i);
    Log.i(TAG, "Package: " + info.packageName);
}

com.twitter.android 和别人不登录串中的，即使它们在手机上安装。

com.twitter.android and others aren't among the logged strings, even though they are installed on the phone.

P.S：我也试过

Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
List<ResolveInfo> mApps = getPackageManager().queryIntentActivities(mainIntent, 0);

这表明Twitter的，但确实无法通过启动器启动不是（显然）回归过程，如下载管理器或系统UI。我需要同时返回系统应用和第三方应用可靠的方法。

which shows Twitter, but doesn't (obviously) return processes that can't be launched via the launcher, such as "Download Manager" or "System UI". I need a method that returns both system apps and third-party apps reliably.

推荐答案

这是由在我身边的错误造成的后（错误地打破了为 -loop出某些条件得到满足），因此不会有什么做的软件包管理系统本身或者我打电话的方式。

This was caused by an error on my side (erroneously breaking out of the for-loop after a certain condition was met) and thus doesn't have anything to do with the PackageManager itself or the way that I was calling it.

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