Android UnsatisfiedLinkError in release builds with R8

[komar-tgm]

When I use the Cast API in a release build that uses R8, I get this exception:

java.lang.UnsatisfiedLinkError: JNI_ERR returned from JNI_OnLoad in "/data/app/~~64wYiOChoMGh9JTT1t63Ag==/at.alysis.nofuss-IM--hyxOpz9yLfhKeMp5MA==/lib/arm64/libQt6Core_arm64-v8a.so"
at java.lang.Runtime.loadLibrary0(Runtime.java:1082)
at java.lang.Runtime.loadLibrary0(Runtime.java:1003)
at java.lang.System.loadLibrary(System.java:1661)
at me.clarius.sdk.Cast.(SourceFile:3)
at at.alysis.nofuss.service.clarius.CastService.onCreate(Unknown Source:28)
at android.app.ActivityThread.handleCreateService(ActivityThread.java:5098)
at android.app.ActivityThread.-$$Nest$mhandleCreateService(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2506)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loopOnce(Looper.java:230)
at android.os.Looper.loop(Looper.java:319)
at android.app.ActivityThread.main(ActivityThread.java:8919)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:578)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1103)

In the proguard-rules.pro File I added these lines:

-keep class me.clarius.sdk.** { ; }
-keep class at.alysis.nofuss.service.clarius.* { *; } // package where all the cast api calls are made

I currently use version v.11.1.0. Debug builds work fine.

[julien-l]

It looks like the native library is missing, make sure to build with the DSL option useLegacyPackaging = true in the Gradle file. If this does not resolve the issue, can you post a minimal example project that reproduces the issue?

[komar-tgm]

In my build.gradle:

packagingOptions {
        jniLibs {
            // required to load qt plugins because qt cannot find uncompressed shared libs in apk
            useLegacyPackaging = true
        }
}

AndroidManifest.xml:

<activity
            android:name=".MainActivity"
            android:exported="true"
            android:theme="@style/Theme.NOFUSS"
            android:windowSoftInputMode="adjustResize">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <!-- Make the example app visible to the clarius app
                to improve user workflow when launching marketplace apps -->
                <action android:name="me.clarius.sdk.action.LAUNCH" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

Then I have got a ConnectionScreen, where I connect to the device and this is where it immediately crashes:

lateinit var castBinder: CastBinder
val castConnection = object : ServiceConnection {
        override fun onServiceConnected(p0: ComponentName?, p1: IBinder?) {
            // We've bound to our service, cast the IBinder now
            castBinder = p1 as CastBinder
            Log.i(tag, "onServiceConnected")

            // check if there is already a connection
            if (castBinder.cast.isConnected) {
                Log.i(tag, "Cast is connected")
            } else {
                viewModel.viewModelScope.launch {
                    Log.i(tag, "Cast is NOT connected")
                    viewModel.getLatestUsedConnectionData()
                    if (isButtonEnabled()) {
                        Log.i(tag, "Connection Data is fully entered. Try to connect to probe now.")
                        connectToProbe()
                    }
                }
            }
        }

        override fun onServiceDisconnected(p0: ComponentName?) {
            Log.i(tag, "onServiceDisconnected")
        }
    }

LaunchedEffect(key1 = true, block = {
        Log.i(tag, "Starting foreground service.")
        val serviceIntent = Intent(context, CastService::class.java)
        context.bindService(serviceIntent, castConnection, Context.BIND_AUTO_CREATE)
    })

The CastService.java Class is taken from the Demo App.

[komar-tgm]

The Clarius Cast Example Project also crashes when enabling the minifier in the build.gradle app. I used the same API version.

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

[julien-l]

I was able to reproduce but I do not have a fix for minifyEnabled true sorry.

[komar-tgm]

Will there be a fix anytime soon for this problem ?

[julien-l]

It is not planned for now sorry.