OpenCV for android sample programs showing error

Question

I have downloaded OpenCV project for android and the sample projects that came bundled with it contains several errors.... Only the projects that contain the NDK code has th

Answer 1

@Nolan's answer followed by @Michael's comment solved it for me. Here are the combined steps:

1. In Eclipse, right click on your project and select properties (This is on a mac btw)
2. Expand C/C++ General
3. Select Paths and Symbols
4. Under Languages select GNU C++

5. The following includes should be defined under Include directories

   ${NDKROOT}/platforms/android-9/arch-arm/usr/include
   ${ProjDirPath}/../../sdk/native/jni/include
   ${NDKROOT}/sources/cxx-stl/gnu-libstdc++/4.4.3/libs/armeabi-v7a/include
   ${NDKROOT}/sources/cxx-stl/gnu-libstdc++/4.4.3/include
   

6. Make sure ${NDKROOT} is defined as an environment variable. If it's not go ahead and add it under C/C++ Build - Environment

7. Now go ahead and rebuild the index by right clicking on your project and select Index - Rebuild

Cheers.

Answer 2

I had the same problem and was able to resolve these and other errors encountered while following the OpenCV tutorial by using the following include paths:

${NDKROOT}/platforms/android-9/arch-arm/usr/include
${ProjDirPath}/../../sdk/native/jni/include
${NDKROOT}/sources/cxx-stl/gnu-libstdc++/4.4.3/libs/armeabi-v7a/include
${NDKROOT}/sources/cxx-stl/gnu-libstdc++/4.4.3/include