jaredrummler/APKParser

Use case of APKParser vs. getPackageManager().getPackageArchiveInfo()

dschuermann opened this issue · 3 comments

dschuermann commented

Hi @jaredrummler

I was wondering what the advantages of are of this library in comparison to getPackageManager().getPackageArchiveInfo(). Can you make a small comparison? Currently I am wondering why APKParser exist. What are the drawbacks of getPackageArchiveInfo?

jaredrummler commented

You can't get the following info using PackageManager:

  • Dex classes
  • Method count
  • Field count
  • Decoded XML
  • Target/Max SDK version

Everything else should be available using getPackageManager().getPackageArchiveInfo(). If you don't need any of the extra info/metadata that this library provides, then stick with using PackageManager.

dschuermann commented

Awesome Thanks

eighthave commented

While its not using PackageManager, I believe that this code works for getting targetSdkVersion and maxSdkVersion:

AssetManager am = context.createPackageContext(packageName, 0).getAssets();
XmlResourceParser xml = am.openXmlResourceParser("AndroidManifest.xml");
int eventType = xml.getEventType();
while (eventType != XmlPullParser.END_DOCUMENT) {
    if (eventType == XmlPullParser.START_TAG && "uses-sdk".equals(xml.getName())) {
        for (int j = 0; j < xml.getAttributeCount(); j++) {
            if (xml.getAttributeName(j).equals("minSdkVersion")) {
                minSdkVersion = Integer.parseInt(xml.getAttributeValue(j));
            } else if (xml.getAttributeName(j).equals("targetSdkVersion")) {
                targetSdkVersion = Integer.parseInt(xml.getAttributeValue(j));
            } else if (xml.getAttributeName(j).equals("maxSdkVersion")) {
                maxSdkVersion = Integer.parseInt(xml.getAttributeValue(j));
            }
        }
        break;
    }
    eventType = xml.nextToken();
}