Tried to set up HelloWorldApp (https://github.com/pytorch/android-demo-app) with the most latest version of PyTorch built from source.
After a little bit of struggling with gradle build I’ve ended up with crash on devices.
Here is the build.gradle :app
apply plugin: 'com.android.application'
repositories {
jcenter()
flatDir {
dirs 'libs'
}
}
android {
packagingOptions {
pickFirst "**/libfbjni.so"
}
compileSdkVersion 28
buildToolsVersion "29.0.2"
defaultConfig {
applicationId "org.pytorch.helloworld"
minSdkVersion 21
targetSdkVersion 28
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
}
}
}
dependencies {
implementation 'androidx.appcompat:appcompat:1.1.0'
// implementation 'org.pytorch:pytorch_android:1.3.0'
// implementation 'org.pytorch:pytorch_android_torchvision:1.3.0'
implementation(name:'pytorch_android-1.4.0-SNAPSHOT', ext:'aar')
implementation(name:'pytorch_android_torchvision-1.4.0-SNAPSHOT', ext:'aar')
implementation(name:'pytorch_android_fbjni-1.4.0-SNAPSHOT', ext:'aar')
}
Note: .aar
libs are present
Crash stacktrace
2019-10-04 22:31:16.059 16203-16203/org.pytorch.helloworld E/AndroidRuntime: FATAL EXCEPTION: main
Process: org.pytorch.helloworld, PID: 16203
java.lang.NoClassDefFoundError: Failed resolution of: Lcom/facebook/soloader/nativeloader/NativeLoader;
at org.pytorch.Module.<init>(Module.java:27)
at org.pytorch.Module.load(Module.java:23)
at org.pytorch.helloworld.MainActivity.onCreate(MainActivity.java:39)
at android.app.Activity.performCreate(Activity.java:8068)
at android.app.Activity.performCreate(Activity.java:8056)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1320)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3757)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3955)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:91)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:149)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:103)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2392)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:213)
at android.app.ActivityThread.main(ActivityThread.java:8147)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:513)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1100)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.facebook.soloader.nativeloader.NativeLoader" on path: DexPathList[[zip file "/data/app/org.pytorch.helloworld-eCefKQPfLWFqNPNZZUphIA==/base.apk"],nativeLibraryDirectories=[/data/app/org.pytorch.helloworld-eCefKQPfLWFqNPNZZUphIA==/lib/arm64, /data/app/org.pytorch.helloworld-eCefKQPfLWFqNPNZZUphIA==/base.apk!/lib/arm64-v8a, /system/lib64, /system/product/lib64, /hw_product/lib64, /system/product/lib64]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:196)
at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
at org.pytorch.Module.<init>(Module.java:27)
at org.pytorch.Module.load(Module.java:23)
at org.pytorch.helloworld.MainActivity.onCreate(MainActivity.java:39)
at android.app.Activity.performCreate(Activity.java:8068)
at android.app.Activity.performCreate(Activity.java:8056)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1320)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3757)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3955)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:91)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:149)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:103)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2392)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:213)
at android.app.ActivityThread.main(ActivityThread.java:8147)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:513)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1100)
May be we should not rely on unstable version but module = Module.load()
is a core feature