How can I dynamically detect whether my application is system or normal?

Question

How do I differentiate between a system app and a normal app ? I looked through android PackageManager and could not find any.

Edit: I want

Answer 1

A simple function:

public boolean isUserApp(ApplicationInfo ai,boolean getUpdatedSystemApps){      
    if ((ai.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
        if(getUpdatedSystemApps==true){
            if((ai.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0){
                return true;
            } else {
                return false;
            }                  
        }
        return false;
    } else {
        return true;
    }
}

you can use above function like:

PackageManager pm = getPackageManager();
List allApps = pm.getInstalledApplications(0);

for (ApplicationInfo ai: allApps) {

    if (isUserApp(ai,true)) {
        // User app or Updated SystemApp - do something here
        ...
    } else {
        // System app
    }
}