OpenCV2.4 与 Android Native Activity答案

【问题标题】：OpenCV2.4 with Android Native ActivityOpenCV2.4 与 Android Native Activity
【发布时间】：2012-06-07 03:41:28
【问题描述】：

我目前面临与in this question 相同的问题，只是我使用的是 2.4 版本而不是 2.3.1。

我已将本机活动（从 ndk 示例）转换为 c++ 并修改了 android.mk 和 application.mk。

我也有同样的错误（有 ~Mat 等等）。

当我阅读问题的答案时，我意识到我需要添加 OPENCV_INSTALL_MODULES:=on and OPENCV_LIB_TYPE:=STATIC（这很奇怪，因为我有一个本地 openCV 的另一个项目不需要这两行）。

但是还是不行。

Android.mk 如下：

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

OPENCV_LIB_TYPE:=STATIC
OPENCV_INSTALL_MODULES:=on

include includeOpenCV.mk

ifeq ("$(wildcard $(OPENCV_MK_PATH))","")
    #try to load OpenCV.mk from default install location
    include $(TOOLCHAIN_PREBUILT_ROOT)/user/share/OpenCV/OpenCV.mk
else
    include $(OPENCV_MK_PATH)
endif

LOCAL_MODULE    := native-activity
LOCAL_SRC_FILES := main.cpp engine.cpp
LOCAL_LDLIBS    := -llog -landroid -lEGL -lGLESv1_CM
LOCAL_STATIC_LIBRARIES += android_native_app_glue


include $(BUILD_SHARED_LIBRARY)

$(call import-module,android/native_app_glue)

我收到以下错误：

./obj/local/armeabi-v7a/libopencv_core.a(persistence.cpp.o): In function `icvPuts(CvFileStorage*, char const*)':
persistence.cpp:(.text._ZL7icvPutsP13CvFileStoragePKc+0x20): undefined reference to `gzputs'
./obj/local/armeabi-v7a/libopencv_core.a(persistence.cpp.o): In function `icvGets(CvFileStorage*, char*, int)':
persistence.cpp:(.text._ZL7icvGetsP13CvFileStoragePci+0x26): undefined reference to `gzgets'
./obj/local/armeabi-v7a/libopencv_core.a(persistence.cpp.o): In function `icvXMLSkipSpaces(CvFileStorage*, char*, int)':
persistence.cpp:(.text._ZL16icvXMLSkipSpacesP13CvFileStoragePci+0x1e2): undefined reference to `gzgets'
persistence.cpp:(.text._ZL16icvXMLSkipSpacesP13CvFileStoragePci+0x208): undefined reference to `gzeof'
persistence.cpp:(.text._ZL16icvXMLSkipSpacesP13CvFileStoragePci+0x33c): undefined reference to `gzeof'
./obj/local/armeabi-v7a/libopencv_core.a(persistence.cpp.o): In function `_ZL16icvYMLSkipSpacesP13CvFileStoragePcii.clone.3':
persistence.cpp:(.text._ZL16icvYMLSkipSpacesP13CvFileStoragePcii.clone.3+0x124): undefined reference to `gzgets'
persistence.cpp:(.text._ZL16icvYMLSkipSpacesP13CvFileStoragePcii.clone.3+0x170): undefined reference to `gzeof'
/cygdrive/d/soft/NVPACK/android-ndk-r7c/build/core/build-binary.mk:366: recipe for target `obj/local/armeabi-v7a/libnative-activity.so' failed
persistence.cpp:(.text._ZL16icvYMLSkipSpacesP13CvFileStoragePcii.clone.3+0x28e): undefined reference to `gzeof'
./obj/local/armeabi-v7a/libopencv_core.a(persistence.cpp.o): In function `cvReleaseFileStorage':
persistence.cpp:(.text.cvReleaseFileStorage+0x24): undefined reference to `gzclose'
./obj/local/armeabi-v7a/libopencv_core.a(persistence.cpp.o): In function `cvOpenFileStorage':
persistence.cpp:(.text.cvOpenFileStorage+0x66e): undefined reference to `gzopen'
persistence.cpp:(.text.cvOpenFileStorage+0x8fc): undefined reference to `gzclose'
persistence.cpp:(.text.cvOpenFileStorage+0xaea): undefined reference to `gzrewind'
persistence.cpp:(.text.cvOpenFileStorage+0xbee): undefined reference to `gzrewind'
persistence.cpp:(.text.cvOpenFileStorage+0xc0a): undefined reference to `gzclose'
collect2: ld returned 1 exit status
make: *** [obj/local/armeabi-v7a/libnative-activity.so] Error 1

有什么我错过的吗？

【问题讨论】：

标签： android opencv native-activity

【解决方案1】：

虽然这是一个老问题，但我遇到了同样的问题并通过添加解决了它

LOCAL_LDLIBS    += -lz # Compression library

到我的 Android.mk

【讨论】：

【解决方案2】：

尝试替换

LOCAL_LDLIBS    := -llog -landroid -lEGL -lGLESv1_CM

与

LOCAL_LDLIBS    += -llog -landroid -lEGL -lGLESv1_CM

【讨论】：

通过这个更正，我不再有以前的错误，但我有：由于无效的 APK 文件，安装失败！请检查 logcat 输出以获取更多详细信息。发射取消！在日志中：pastebin.com/Brj3n1BB
我结束了原生等离子项目的尝试（其中显示是通过写入位图来完成的）并且效果很好......

【解决方案3】：

我结束了本地等离子项目的尝试（其中显示是通过写入位图来完成的）并且效果很好。

也许 GLES 搞砸了 OpenCV。 我认为这两个项目之间没有任何其他区别。

问题在某种程度上得到了解决。不过，如果有人遇到同样的问题并解决了它，我很想了解导致它的原因以及如何解决它。

【讨论】：