Java Reflections doesn't work with Android instant run -

i'm writing code uses java reflections on it. i'm scanning package class using method:

/**  * called list of classes included in current project  *  * @param packagename name of application package  * @return array of classes' names  */ private string[] getclassesofpackage(string packagename) {     arraylist<string> classes = new arraylist<>();     try {         string packagecodepath = getpackagecodepath();         dexfile df = new dexfile(packagecodepath);         (enumeration<string> iter = df.entries(); iter.hasmoreelements(); ) {             string classname = iter.nextelement();             if (classname.contains(packagename)) {                 classes.add(classname);             }         }     } catch (ioexception e) {         e.printstacktrace();     }      return classes.toarray(new string[classes.size()]); } 

recently upgraded gradle version 2.1.0 trying out instant run feature, noticed app package returns empty string[] method , method returns classes inside package name com.android.tools.fd.*

why can't see classes in app package?!

if see "packagecodepath" value after instant run deploying , simple install, can see values differ.

for example, in project saw this:

instant run: /data/app/com.app-1/base.apk not instant run: /data/app/com.app-1.apk 

after watched mnamelist in dexfile instance , surprised differs in 2 modes! in instant run mode watched 30 classes, instead of not instant run mode.

i don't know deep details of process, think caused ideology of instant run replacing modified classes.

maybe answer useful you.