martin20150405 / opencv4androidwithcmake Goto Github PK

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Use Android Studio 3.0 (>=2.2) and Cmake Toolchain to make your Android device fly with Opencv (OpenCV 3.40)

Java 22.45% C 5.10% C++ 72.18% Objective-C 0.17% CMake 0.10%

android cmake java opencv

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opencv4androidwithcmake's Issues

按照你的方法自建项目中.so文件没有复制到.apk中

你好，在你的设置opencv cmake的那篇文章中，我按照你的方法，但是最后.apk文件里没有包含那两个.so文件，并且将你的项目下载下来，发现jniLibs这个文件夹优点特殊，貌似被认为是某种resource folder或assets folder，请问你是怎么让.so文件自动复制到.apk文件里的啊？谢谢

2021-08-15 19:08:08.065 31485-31485/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.jiangdg.opencv4android, PID: 31485
java.lang.RuntimeException: Unable to resume activity {com.jiangdg.opencv4android/com.jiangdg.opencv4android.imgproc.ImageSmoothActivity}: CvException [org.opencv.core.CvException: cv::Exception: OpenCV(3.4.1) /build/master_pack-android/opencv/modules/imgproc/src/color.cpp:11115: error: (-215) scn == 3 || scn == 4 in function void cv::cvtColor(cv::InputArray, cv::OutputArray, int, int)
]
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:4270)
at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:4302)
at android.app.servertransaction.ResumeActivityItem.execute(ResumeActivityItem.java:52)
at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:176)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2044)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:224)
at android.app.ActivityThread.main(ActivityThread.java:7562)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
Caused by: CvException [org.opencv.core.CvException: cv::Exception: OpenCV(3.4.1) /build/master_pack-android/opencv/modules/imgproc/src/color.cpp:11115: error: (-215) scn == 3 || scn == 4 in function void cv::cvtColor(cv::InputArray, cv::OutputArray, int, int)
]
at org.opencv.imgproc.Imgproc.cvtColor_1(Native Method)
at org.opencv.imgproc.Imgproc.cvtColor(Imgproc.java:1896)
at com.jiangdg.opencv4android.imgproc.ImageSmoothActivity$1.onManagerConnected(ImageSmoothActivity.java:64)
at com.jiangdg.opencv4android.imgproc.ImageSmoothActivity.onResume(ImageSmoothActivity.java:109)
at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1454)
at android.app.Activity.performResume(Activity.java:8050)
at android.app.ActivityThread.performResumeActivity(ActivityThread.java:4260)

Device support x86

I need run this app on x86 emulator.

I can find in .../OpenCV-android-sdk/sdk/native/libs/x86/libopencv_java3.so
Where I can find libopencv_java.so for x86?

I changed

No slam2 compiled

Hi @Martin20150405 ,
Thx for your work, I used orb-slam2 for android studio , but metting with some problem, can you show us with orb-slam2 in Android studio.

Thx

解决JNI层方法无法被识别找到的问题

app/CMakeLists.txt line 16 增加：

include_directories(${CMAKE_SOURCE_DIR}/src/main/cpp)

然后synchronize一下即可

Error:(31) undefined reference to 'cv::FastFeatureDetector::create(int, bool, int)'

你好，在编译时报这个错

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