Question

Whenever we start any Activity, we get information about the uid, gid, etc, something like this:

I/ActivityManager( 1986): Start proc app.processName for activity hostingNameStr: pid=3641 uid=10109 gids={3003, 1007}

Now using PackageManager, we can get the packageName, uid and pid something like this:

List<ApplicationInfo> packages = pm
                .getInstalledApplications(PackageManager.GET_META_DATA);

for (ApplicationInfo packageInfo : packages) {
    Log.d("ME", "packageInfo is  :" + packageInfo);
    Log.d("ME", "Installed package :" + packageInfo.packageName);
    Log.d("ME", "Package process for " + packageInfo.packageName+"-->" + packageInfo.processName);
    Log.d("ME", "Package uid for " + packageInfo.packageName+"-->"+packageInfo.uid);
}

But here, I’m not able to get the gid and so was wondering whether getting gid like this is even possible or not.

Answer 1

Try to have a look at the methods that are provided by Process class. For instance, in your case getGidForName(String name). It returns int values, GID, but I do not know how to select the list of all gids.

EDIT:
I was a bit confused with applicationInfo. You can use PackageManager’s method getPackageGids(String packageName) or you can get all PackageInfo and then read value of the gids field.