My log messages are not removed with proguard configuration

Question

I am developing my Android app.

Then I enable & configure proguard by:

Step 1. Enable proguard:

In project.properties I have:

proguard.config=${sdk.dir}/tools/proguard/proguard-android-optimize.txt:proguard-project.txt

I also tried the following:

# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
proguard.config=proguard.cfg

Step 2. Configure proguard:

In proguard.cfg I have:

-assumenosideeffects class android.util.Log { *; }

I think the above configuration should remove all logs.

But when I install the APK under target/ folder & run my app, I can still see all my Log messages in logcat console. Why?

Answer 1

You should use the first line in your project.properties:

proguard.config=${sdk.dir}/tools/proguard/proguard-android-optimize.txt:proguard-project.txt

You should then add these lines to your proguard-project.txt (not the deprecated proguard.cfg):

-assumenosideeffects class android.util.Log {
    public static boolean isLoggable(java.lang.String, int);
    public static int v(...);
    public static int i(...);
    public static int w(...);
    public static int d(...);
    public static int e(...);
}

These options only have any effect if the file does not contain -dontoptimize.

Ant and Eclipse pick up the settings from project.properties. Gradle and Maven require equivalent settings that specify the configuration files, in build.gradle and in pom.xml respectively.

Similar questions and answers:

• How to config my proguard-project.txt file to remove just Logs
• Removing Log call using proguard

Answer 2

I can't remember where I found the reference to this method, but I've always used this:

-assumenosideeffects class android.util.Log {
    public static *** d(...);
    public static *** v(...);
}

in my configuration. It does remove debug and verbose logging that I wrote