CODEWITHSUNDEEP
androidgoogle-drive-apiandroid-proguard
Gerrit Beuze
Gerrit Beuze

Reputation: 921

How to fix Proguard issue with Google Drive REST API

I'm using the Google Rest API v3 to connect my android app to Google Drive. When I run without Proguard (minifyEnabled=false), all is well. However, when I enable proguard the wrong REST API methods are called. When I call Drive.Files.get().execute on the drive root alias "root" I get the result for a Drive.Files.list().execute. When I disable "minifyEnabled" I see the correct result. Here is the section of the build.gradle that controls running Proguard:

buildTypes {
    release {
        minifyEnabled true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
    debug {
        minifyEnabled true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}

The default Proguard file is the unmodified one that gets distributes with Android Studio 2.2 (not the optimized version)

And this is the contents of my proguard-rules.pro file

-keepattributes EnclosingMethod
-keepattributes InnerClasses
-dontoptimize

-keep class com.google.**
-keep class com.fasterxml.**
-dontwarn com.google.**

When I check in the generated mapping.txt I still see renamed members in classes that imo shoudl have been "kept". For example:

com.google.api.client.auth.oauth.OAuthParameters -> com.google.api.client.auth.oauth.OAuthParameters: java.security.SecureRandom RANDOM -> l com.google.api.client.auth.oauth.OAuthSigner signer -> a java.lang.String callback -> b java.lang.String consumerKey -> c java.lang.String nonce -> d java.lang.String realm -> e

I would have thought "-keep class com.google.** " would have avoided this?

Any idea how to fix this?

THanks in advance,

Upvotes: 6

Views: 2335

Answers (4)

Arda Ç.
Arda Ç.

Reputation: 534

This worked for me. Thank you.

-keepattributes Signature,RuntimeVisibleAnnotations,AnnotationDefault
-keepclassmembers class * {
  @com.google.api.client.util.Key <fields>;
}
-dontwarn com.google.api.client.extensions.android.**
-dontwarn com.google.api.client.googleapis.extensions.android.**
-dontwarn com.google.android.gms.**
-dontnote java.nio.file.Files, java.nio.file.Path
-dontnote **.ILicensingService
-dontnote sun.misc.Unsafe
-dontwarn sun.misc.Unsafe
-keep class * extends com.google.api.client.json.** { *; }
-keep class * extends com.google.api.client.util.** { *; }
-keep class com.google.api.services.drive.** { *; }

Upvotes: 0

Alex
Alex

Reputation: 3382

You need

-keep class com.google.** { *;}

and

-keep class com.fasterxml.** { *;}

Also you might try to keep less from the SDK. These rules are very wide.

Edit: Wide rules means that it probably will keep more unused classes in your project hence the apk size and method count will be bigger.

Upvotes: 3

Evgeni Roitburg
Evgeni Roitburg

Reputation: 2097

This one worked for me:

-keepclassmembers class * {
  @com.google.api.client.util.Key <fields>;
}

As seen in the official google sample:

https://github.com/google/google-api-java-client-samples/blob/master/tasks-android-sample/proguard-google-api-client.txt

Upvotes: 13

C&#237;cero Moura
C&#237;cero Moura

Reputation: 2333

In my case I had to put these keeps:

-keep class br.project.pine.** { *;}
-keep class com.google.api.services.drive.** { *;}

Tip: When enabling minify in debug mode, pay attention to the LogCat. It can help you to find out the real missing package/class/attribute.

Upvotes: 1

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