Android Studio 2.1 debugger does not show local variables

Question

I am trying to debug over network in Android Studio. I connected via port 5555 and generally it is possible step through break points. But it often takes minutes just to execute one line of code and the other thing is that I don't see any variables which are no members. All I see is the this object, but no variables from within methods. How can I enable it?

As you can see I am within the method and at least the activity object is initialized, but it is not visible in the variables monitor.

UPDATE:

The problem remains when using USB debugging. No local variables are visible, not even when trying to evaluate expressions while debugging:

Android Studio 2.1, Gradle 2.1.0, Java 1.8

So when you click on the `+` to the left of `this` is it not showing the variables within `this`? — AgileNinja, May 10 '16 at 15:28
There are variables, but e.g. `activity` is a function variable which should definitely not be declared within this, but below as far as I remember — 4ndro1d, May 10 '16 at 16:23
You are right! Just tried it and `activity` is listed below `this` and not within. I'm stumped. — AgileNinja, May 10 '16 at 16:46
I just figured out that the problem remains when switching back to USB as well... T_T — 4ndro1d, May 11 '16 at 12:34
is this problem because of the new Jackson compiler? I just started experiencing this very annoying issue, and it's slowing down my development considerably. — Gubatron, Jul 30 '16 at 21:12

score 19 · Answer 1 · answered Dec 14 '16 at 15:12

19

Had the same problem.

There is a bug in Android Studio, see https://code.google.com/p/android/issues/detail?id=93730

They recommend removing in build.gradle (app), this fixed the issue for me.

android {
    buildTypes {
        debug {
            ...
            testCoverageEnabled true
        }
    }
}

answered Dec 14 '16 at 15:12

vasquez

449
6
8

3

should be testCoverageEnabled false – hyena Aug 17 '17 at 23:57
It works for me, thank. Seems like we can't use test coverage and debug at the same time, what an inconvenience – Phong Nguyen Jan 19 '18 at 06:45

score 15 · Answer 2 · answered Mar 04 '19 at 23:35

After a while of figuring out this same issue, I realized I was running a release build rather than a debug build.

The build variants window may not be open in Android Studio by default. Go to Tool Windows -> Build Variants. In the Build Variants window, select the appropriate build.

In your app.gradle file, make sure debuggable is set to true in the build variant you would like to debug:

android {

   // ...

   buildTypes {

      release {
         // ...
      }

      debug {
         debuggable true
      }

   }

   // ...

}

If you would like to debug your release build, go ahead and add debuggable true to your release build.

Hope this helps!

The 1st paragraph of this answer hits the nail on the head. Had the same issue. Doh! — Christian.D, Jun 14 '19 at 10:28

Marline · Answer 3 · 2019-02-21T23:17:37.987

5

I tried setting testCoverageEnabled to false but that did not work for me. In my case, I had ProGuard enabled for my debug flavor and disabling it (i.e. setting minifiyEnabled to false) was the only thing that allowed me to be able to see my local variables while debugging again.

edited Feb 21 '19 at 23:17

answered Mar 05 '18 at 21:51

Marline

269
3
10

score 3 · Answer 4 · answered Jun 20 '19 at 22:30

3

In my case, it was because I had forgotten that my build variant was set to release. Toggling the variant back to debug and re-running correctly showed the local variables.

answered Jun 20 '19 at 22:30

jcady

3,850
2
21
21

score 1 · Answer 5 · answered Sep 28 '17 at 20:59

1

For me I had to set testCoverageEnabled to false like so:

android {
    buildTypes {
        debug {
            ...
            testCoverageEnabled false
        }
    }
}

When I had this set to true, I was not getting local variables

answered Sep 28 '17 at 20:59

BlackHatSamurai

23,275
22
95
156

I have tried above solution its not worked for me ,still having issue – Sagar Jun 22 '18 at 06:54

score 0 · Answer 6 · answered Jun 06 '17 at 15:46

0

While this is not a permanent solution to this problem, my most consistent fix (after trying the other answers here to no avail) has simply been restarting my computer.

answered Jun 06 '17 at 15:46

lase

2,508
2
24
35

score 0 · Answer 7 · edited Sep 10 '20 at 05:45

0

I tried some kind of hit n trial and made it work with the settings as seen in the attachment. FYI, using latest version of Android Studio 3.3.1 and gradle version 4.6.

edited Sep 10 '20 at 05:45

SimplyProgrammer

1,799
2
17
28

answered Feb 07 '19 at 15:44

Digvesh

9
2

Welcome to SO. You should 1) embed those images 2) provide some textual answer if they become unavailable. – m02ph3u5 Feb 07 '19 at 16:02

score -1 · Answer 8 · answered Jan 27 '17 at 14:26

-1

I had same trouble. I completely reinstalled my IDE and the trouble has been disappeared. I hope my approach will help you.

answered Jan 27 '17 at 14:26

0wl

836
8
19

You probably just needed to update, which re-installing did for you. – Nickmccomb May 17 '17 at 06:41

score -3 · Answer 9 · answered Sep 15 '16 at 17:05

-3

Java 1.8 does not support accessing variable values.

Update Gradle to version 2.2.0-beta3:

In your gradle-wrapper.properties

distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip

In your project build.gradle file

dependencies {
    classpath 'com.android.tools.build:gradle:2.2.0-beta3'
}

answered Sep 15 '16 at 17:05

Cris Grange

50
7

Wait what? So I can't debug when using Java 1.8? So what does the gradle change do? – 4ndro1d Dec 26 '16 at 14:06
1

You can debug with Java 1.8 but only using Gradle version 2.2.0 or above – Cris Grange Dec 27 '16 at 14:36
4

Please rephrase this answer, it is misleading. – Andrew S Feb 04 '18 at 04:11

Android Studio 2.1 debugger does not show local variables

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