AccessManager.java 文件源码

public static Set<String> getAllHostPackages(Context ctx)
{
    SharedPreferences prefs = ctx.getSharedPreferences("KP2A.PluginAccess.hosts", Context.MODE_PRIVATE);
    Set<String> result = new HashSet<String>();
    for (String host: prefs.getAll().keySet())
    {
        try
        {
            PackageInfo info = ctx.getPackageManager().getPackageInfo(host, PackageManager.GET_META_DATA);
            //if we get here, the package is still there
            result.add(host);
        }
        catch (PackageManager.NameNotFoundException e)
        {
            //host gone. ignore.
        }
    }
    return result;

}