找不到opencv.hpp吗？ Android NDK

Question

我在jniLibs目录中拥有所有预构建的Open CV .so文件，同时我也有一些使用OpenCV的C++文件。我有以下Android.mk和Application.mk脚本。

Android.mk

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE:= opencv-prebuilt
LOCAL_SRC_FILES:= ../jniLibs/$(TARGET_ARCH_ABI)/libopencv_java.so
LOCAL_EXPORT_C_INCLUDES:= $(LOCAL_PATH)/build/include
include $(PREBUILT_SHARED_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE     := AN
LOCAL_SRC_FILES  := A.cpp B.cpp
LOCAL_SHARED_LIBRARIES := opencv-prebuilt
LOCAL_C_INCLUDES += $(LOCAL_PATH)
LOCAL_LDLIBS     += -llog -ldl
include $(BUILD_SHARED_LIBRARY)

Application.mk

APP_STL := gnustl_static
APP_CPPFLAGS := -frtti -fexceptions
APP_ABI := armeabi-v7a
APP_PLATFORM := android-8

为什么在尝试编译时， #include <opencv2/opencv.hpp> no such directory or file found错误的no such directory or file found并指向我的jni目录中的#include <opencv2/opencv.hpp>语句？

我在这里看到了另一个类似的问题，但无法通过解决方案解决

Answer 1

您只应包括某些来源严格要求的头文件，即

#include <DetectionBasedTracker.h>
#include <opencv2/core/core.hpp>
#include <opencv2/contrib/detection_based_tracker.hpp>

考虑到您接受的答案，您正在将其作为可能的解决方案，作为参考，将应放置SO文件的目录设置在app / build.grade上 ：

sourceSets.main {
    jniLibs.srcDir 'src/main/libs' //set .so files location to libs
    jni.srcDirs = [] //Disable automatic ndk-build call
}

tasks.withType(NdkCompile) {
    compileTask -> compileTask.enabled = false
}

不过，我仍然会尝试在您的Android.mk中引用OpenCV.mk：

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
OPENCV_CAMERA_MODULES:=on
OPENCV_INSTALL_MODULES:=off
OPENCV_LIB_TYPE:=STATIC
include /Users/egomez/dev/OpenCV4AndroidWorkspace/OpenCV-android-sdk/sdk/native/jni/OpenCV.mk

希望能帮助到你。