带有 Proguard 的 Android Studio 中的 Dagger 警告，即使未直接使用 Dagger

Question

My project is no longer compiling with Proguard optimisations. As you will see below it mentions dagger but I have not been using anything related to that directly. I recently updated many dependencies at once.

Warning: dagger.android.AndroidMemorySensitiveReferenceManager: can't find referenced class dagger.releasablereferences.TypedReleasableReferenceManager
Warning: dagger.android.AndroidMemorySensitiveReferenceManager: can't find referenced class dagger.releasablereferences.TypedReleasableReferenceManager
Warning: dagger.android.AndroidMemorySensitiveReferenceManager: can't find referenced class dagger.releasablereferences.TypedReleasableReferenceManager
Warning: dagger.android.AndroidMemorySensitiveReferenceManager: can't find referenced class dagger.releasablereferences.TypedReleasableReferenceManager
Warning: dagger.android.AndroidMemorySensitiveReferenceManager: can't find referenced class dagger.releasablereferences.TypedReleasableReferenceManager
Warning: dagger.android.AndroidMemorySensitiveReferenceManager: can't find referenced class dagger.releasablereferences.TypedReleasableReferenceManager
Warning: dagger.android.AndroidMemorySensitiveReferenceManager: can't find referenced class dagger.releasablereferences.TypedReleasableReferenceManager
Warning: dagger.android.AndroidMemorySensitiveReferenceManager: can't find referenced class dagger.releasablereferences.TypedReleasableReferenceManager
Warning: dagger.android.AndroidMemorySensitiveReferenceManager: can't find referenced class dagger.releasablereferences.TypedReleasableReferenceManager
Warning: dagger.android.AndroidMemorySensitiveReferenceManager_Factory: can't find referenced class dagger.releasablereferences.TypedReleasableReferenceManager
Warning: dagger.android.AndroidMemorySensitiveReferenceManager_Factory: can't find referenced class dagger.releasablereferences.TypedReleasableReferenceManager
Warning: dagger.android.AndroidMemorySensitiveReferenceManager_Factory: can't find referenced class dagger.releasablereferences.TypedReleasableReferenceManager
Warning: dagger.android.AndroidMemorySensitiveReferenceManager_Factory: can't find referenced class dagger.releasablereferences.TypedReleasableReferenceManager
Warning: dagger.android.AndroidMemorySensitiveReferenceManager_Factory: can't find referenced class dagger.releasablereferences.TypedReleasableReferenceManager
Warning: dagger.android.AndroidMemorySensitiveReferenceManager_Factory: can't find referenced class dagger.releasablereferences.TypedReleasableReferenceManager
Warning: dagger.android.AndroidMemorySensitiveReferenceManager_Factory: can't find referenced class dagger.releasablereferences.TypedReleasableReferenceManager
Warning: dagger.android.ReleaseReferencesAt: can't find referenced class dagger.releasablereferences.CanReleaseReferences

If I use dontwarn to suppress dagger related lines, I get the following messages (I tried to get more lines with --info , --debug and --scan but output has the same detail):

> Task :app:transformClassesAndResourcesWithProguardForRelease FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:transformClassesAndResourcesWithProguardForRelease'.
> java.io.IOException: java.lang.ArrayIndexOutOfBoundsException: 2

I tried the latest(6.1.1) Proguard too (overriding the default one), the result is the same.

What can be the reason?

App's build.gradle contents:

apply plugin: 'com.android.application'
apply plugin: 'io.fabric'

android {

    compileSdkVersion 29//28
    buildToolsVersion "29.0.0" //"28.0.3"
    defaultConfig {
        applicationId "myapp"
        minSdkVersion 16
        targetSdkVersion 28

        versionName "1.1.1"
        multiDexEnabled true
        manifestPlaceholders.crashlyticsEnabled = "true"
    }
    buildTypes {
        release {
            useProguard true
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }

    dexOptions {
        javaMaxHeapSize "2g"
    }
}
configurations {
    all*.exclude group: 'com.google.guava', module: 'listenablefuture'
}

dependencies {
    implementation 'com.android.billingclient:billing:2.0.0'
    implementation 'androidx.media:media:1.1.0-rc01'
    implementation 'androidx.preference:preference:1.1.0-beta01'
    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
    implementation 'androidx.appcompat:appcompat:1.1.0-beta01'
    implementation 'com.google.android.material:material:1.1.0-alpha07'
    implementation files('libs/juniversalchardet-1.0.3.jar')
    implementation project(path: ':ViewPageIndicator')

    implementation 'com.google.firebase:firebase-core:17.0.0'
    implementation 'com.google.firebase:firebase-inappmessaging-display:18.0.0'
    implementation 'com.google.firebase:firebase-ads:18.0.0'
    implementation 'com.crashlytics.sdk.android:crashlytics:2.10.1'
    implementation 'com.google.firebase:firebase-analytics:17.0.0'

    implementation 'androidx.multidex:multidex:2.0.1'

    implementation 'androidx.cardview:cardview:1.0.0'
    implementation 'androidx.browser:browser:1.0.0'
    implementation 'com.facebook.android:facebook-login:4.42.0'
    implementation 'com.facebook.android:facebook-share:4.42.0'
    implementation 'com.amplitude:android-sdk:2.23.0'
    implementation 'com.flurry.android:analytics:11.5.0@aar'
    implementation 'com.google.code.gson:gson:2.8.5'
    implementation 'android.arch.lifecycle:runtime:1.1.1'
    annotationProcessor "android.arch.lifecycle:compiler:1.1.1"
    implementation 'android.arch.lifecycle:extensions:1.1.1'
    implementation('io.socket:socket.io-client:1.0.0') {
        exclude group: 'org.json', module: 'json'
    }
}

apply plugin: 'com.google.gms.google-services'

UPDATE I reverted the dependencies to their previos versions. The problem is implementation 'com.google.firebase:firebase-inappmessaging-display:18.0.0' If I change the version to 17.1.0 , "dagger" related problem disappears. If I change it to 17.2.0 , the problem comes back.

UPDATE2 This may be a bug with Firebase. I have contacted them and they created an internal bug report. I will update this question when I have the answer.

Answer 1

I had a very similar problem when I added the new version of firebase crashlytics to my project, the output was the same as yours, What I did was added a dontwarn for the dagger library on the pro-guard file, because this dagger problem was not affecting the project at all it is just a problem with the pro-guard obfuscation task.

#dagger
-dontwarn  dagger.android.**

That solved the problem for me.

Answer 2

Because you don't know what is your dagger version it is very hard to find what is an exact issue in your project but you can add below code in your progaurd-rules.pro file and your project will successfully build.

-ignorewarnings
-keep class * {
    public private *;
}

Try and let me know. Hope it will work for you. Happy coding :)