CLI on DalvikVM fails on JNI lib

by

Good question! I had to dig a bit to figure this out.

There are a slew of JNI methods in libandroid_runtime.so that don’t get bound by default, when you’re using the dalvikvm command. Unfortunately, you can’t just do a System.loadLibrary(“android_runtime”), because this doesn’t actually bind all the native methods.

However, after some digging, it turns out there is an internal, non-public, not guaranteed to be there class called com.android.internal.util.WithFramework, whose purpose is to load libandroid_runtime.so and bind all its JNI methods.

To use it, just throw com.android.internal.util.WithFramework in front of your class name, on the dalvikvm command, like so:

dalvikvm -cp /some/path/classes.dex com.android.internal.util.WithFramework my.example.cls "This is an argument"

(Note: This only works on pre-M devices, due to the WithFramework class being removed in M – thanks for the heads up @JaredRummler)

More Related Contents:

  1. How to use JNI bitmap operations for helping to avoid OOM when using large images? [closed]
  2. What is the best way to save JNIEnv*
  3. How can I catch SIGSEGV (segmentation fault) and get a stack trace under JNI on Android?
  4. Calling native method twice of third party library in an Activity causes the Android application to close down
  5. Write file to location other than SDcard using Android NDK?
  6. Rotating a bitmap using JNI & NDK
  7. NDK – How to use a generated .so library in another project
  8. Any simple way to log in Android NDK code?
  9. How to Find memory leaks from native code in android
  10. Debugging Android NDK C/C++ code in Eclipse – breakpoints are not hit
  11. Why do some Android phones cause our app to throw an java.lang.UnsatisfiedLinkError?
  12. Android JNI – Call AttachCurrentThread without DetachCurrentThread
  13. Javah Error android.app.Activity not found
  14. WARNING: ABIs [armeabi-v7a,armeabi] set by ‘android.injected.build.abi’ gradle flag contained ‘ARMEABI’ not targeted by this project
  15. Integrate MuPDF Reader in an app
  16. Is it possible to dynamically load a library at runtime from an Android application?
  17. How to use 32-bit native libraries on 64-bit Android device
  18. ffmpeg for a android (using tutorial: “ffmpeg and Android.mk”)
  19. Cannot load library: reloc_library[1285]: cannot locate ‘rand’
  20. How to simulate touch from background service with sendevent or other way?
  21. Does the Android ART runtime have the same method limit limitations as Dalvik?
  22. [INSTALL_FAILED_NO_MATCHING_ABIS: Failed to extract native libraries, res=-113]
  23. run-as Package ‘a.b.c’ is unknown – Galaxy S4 Jellybean or Android 4.3
  24. Android NDK: Link using a pre-compiled static library
  25. Gstreamer examples in Android Studio
  26. Android ndk std::to_string support
  27. Native libraries not found in ApplicationInfo.nativeLibraryDir when building app bundle for arm64 Android phone
  28. Android valgrind build fails
  29. Access android context in ndk application
  30. Android Understanding Heap Sizes

Leave a Comment