Android Studio's debugger not stopping at breakpoints within library modules

Question

At the moment I\'m developing an Android app that is based on third party code. I started to set breakpoints for understanding the code and soon ran into a problem. Suddenly

Answer 1

in addition to olik79's answer, I would like to add that , these two lines will make your app hit to breakpoints in fragments. otherwise it may baypass fragments

-keep public class * extends android.support.v4.** {*;}
-keep public class * extends android.app.Fragment

here is my complete edit on proguard-android.txt in sdk\tools\proguard

# The support library contains references to newer platform versions.
# Don't warn about those in case this app is linking against an older
# platform version.  We know about them, and they are safe.
-dontwarn android.support.**

-keep class !android.support.v7.internal.view.menu.**,android.support.** {*;}
-ignorewarnings
-renamesourcefileattribute SourceFile
-keepattributes SourceFile,LineNumberTable

-keep public class * extends android.support.v4.** {*;}
-keep public class * extends android.app.Fragment