How to get the list of apps that have been installed by a user on an Android device?

// Flags: See below
int flags = PackageManager.GET_META_DATA | 
            PackageManager.GET_SHARED_LIBRARY_FILES |     
            PackageManager.GET_UNINSTALLED_PACKAGES;

PackageManager pm = getPackageManager();
List<ApplicationInfo> applications = pm.getInstalledApplications(flags);
for (ApplicationInfo appInfo : applications) {
    if ((appInfo.flags & ApplicationInfo.FLAG_SYSTEM) == 1) {
        // System application
    } else {
        // Installed by user
    }
}

Flags:

• GET_META_DATA
• GET_SHARED_LIBRARY_FILES
• GET_UNINSTALLED_PACKAGES

Zelimir's answer is correct. But in some cases it won't give you all the installed third-party applications. ApplicationInfo also has flag FLAG_UPDATED_SYSTEM_APP which is set

If this application has been install as an update to a built-in system application

On my smart phone such applications include Amazone Kindle, Adobe Reader, Slacker Radio and others. These applications did not come with the phone and were installed from Google Play Store. Thus, they can be considered as third-party apps.

So, you may also want to check FLAG_UPDATED_SYSTEM_APP flag.

final PackageManager packageManager = _context.getPackageManager();
List<ApplicationInfo> installedApplications = 
    packageManager.getInstalledApplications(PackageManager.GET_META_DATA);

for (ApplicationInfo appInfo : installedApplications)
{
    if ((appInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0)
    {
        // IS A SYSTEM APP
    }

    if ((appInfo.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0)
    {
        // APP WAS INSTALL AS AN UPDATE TO A BUILD-IN SYSTEM APP
    }
}

If I do pkgAppsList.get(0), it returns an ResolveInfo Object. How do I get information such as the icon, and packageName?

Just do this:

ResolveInfo info = pkgAppsList.get(0);
ApplicationInfo appInfo = info.activityInfo.applicationInfo;

PackageManager packageManager = = getPackageManager();
//And then you retrieve all needed data:
Drawable packageIcon = packageManager.getApplicationIcon(applicationInfo); //Icon
String packageName = applicationInfo.packageName; //Package name
String packageLabel = String.valueOf(packageManager.getApplicationLabel(applicationInfo)) //Package label(app name)