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我从here下载了Tesseract OCR for Android，我试图用NDK将它构建为我自己的应用程序的库项目。我收到了一些有关如何执行此操作的有用反馈here。首先，我做这在命令行（[路径]是的路径苔丝个项目的简写）：UnsatisfiedLinkError - Tesseract for Android
> cd [path]\tess-two
> C:\android-ndk-r8b-windows\android-ndk-r8b\ndk-build -j8
"Compile thumb : lept <= adaptmap.c
[...]
"Compile++ thumb : lept <= writefile.cpp
Prebuilt : libgnustl_static.a <= <NDK>/sources/cxx-stl/gnu-libstdc++/4.6/libs/armeabi/
"Compile++ thumb : tess <= applybox.cpp
[...]
"Compile++ thumb : tess <= tessbaseapi.cpp
"Compile thumb : lept <= adaptmap.c
[...]
"Compile++ thumb : lept <= pixa.cpp
Prebuilt : libgnustl_static.a <= <NDK>/sources/cxx-stl/gnu-libstdc++/4.6/libs/armeabi-v7a/
"Compile++ thumb : lept <= jni.cpp
[...]
"Compile++ thumb : tess <= tessbaseapi.cpp
"Compile x86 : lept <= affine.c
[...]
"Compile++ x86 : lept <= readfile.cpp
Prebuilt : libgnustl_static.a <= <NDK>/sources/cxx-stl/gnu-libstdc++/4.6/libs/x86/
"Compile++ x86 : tess <= baseapi.cpp
[...]
"Compile++ x86 : tess <= wordclass.cpp
SharedLibrary : liblept.so
SharedLibrary : liblept.so
"Compile++ x86 : tess <= tessbaseapi.cpp
SharedLibrary : liblept.so
"Compile++ x86 : tess <= wordrec.cpp
SharedLibrary : libtess.so
Install : liblept.so => libs/x86/liblept.so
Install : liblept.so => libs/armeabi/liblept.so
SharedLibrary : libtess.so
Install : liblept.so => libs/armeabi-v7a/liblept.so
SharedLibrary : libtess.so
Install : libtess.so => libs/armeabi/libtess.so
Install : libtess.so => libs/armeabi-v7a/libtess.so
Install : libtess.so => libs/x86/libtess.so
> C:\Users\User\android-sdk\tools\android.bat update project --path .
Failed to convert path to a short DOS path: C:\Windows\system32\java.exe
'javaw_exe' is not recognized as an internal or external command,
operable program or batch file.
Updated local.properties
Updated file [path]\tess-two\proguard-project.txt
It seems that there are sub-projects. If you want to update them
please use the --subprojects parameter.
> set JAVA_HOME=C:\Java\JDK
> Buildfile: [path]\tess-two\build.xml
-set-mode-check:
-set-release-mode:
-release-obfuscation-check:
[echo] proguard.config is ${proguard.config}
-check-env:
[checkenv] Android SDK Tools Revision 20.0.3
[checkenv] Installed at C:\Users\User\android-sdks
-setup:
[echo] Project Name: tess-two
[gettype] Project Type: Android Library
-build-setup:
[echo] Resolving Build Target for tess-two...
[gettarget] Project Target: Google APIs
[gettarget] Vendor: Google Inc.
[gettarget] Platform Version: 4.1
[gettarget] API level: 16
[echo] ----------
[echo] Creating output directories if needed...
[echo] ----------
[echo] Resolving Dependencies for tess-two...
[dependency] Library dependencies:
[dependency] No Libraries
[dependency]
[dependency] ------------------
[dependency] API<=15: Adding annotations.jar to the classpath.
[echo] ----------
[echo] Building Libraries with 'release'...
[subant] No sub-builds to iterate on
-pre-build:
-code-gen:
[mergemanifest] Found Deleted Target File
[mergemanifest] Merging AndroidManifest files into one.
[mergemanifest] Manifest merger disabled. Using project manifest only.
[echo] Handling aidl files...
[aidl] No AIDL files to compile.
[echo] ----------
[echo] Handling RenderScript files...
[renderscript] No RenderScript files to compile.
[echo] ----------
[echo] Handling Resources...
[aapt] Found new input file
[aapt] Generating resource IDs...
[echo] ----------
[echo] Handling BuildConfig class...
[buildconfig] No need to generate new BuildConfig.
-pre-compile:
-compile:
[echo] Creating library output jar file...
-post-compile:
-obfuscate:
-dex:
[echo] Library project: do not convert bytecode...
-crunch:
[crunch] Crunching PNG Files in source dir: [path]\tess-two\res
[crunch] To destination dir: [path]\tess-two\bin\res
[crunch] Crunched 0 PNG files to update cache
-package-resources:
[echo] Library project: do not package resources...
-package:
[echo] Library project: do not package apk...
-post-package:
-release-prompt-for-password:
-release-nosign:
[echo]
[propertyfile] Updating property file: [path]\tess-two\bin\build.prop
[propertyfile] Updating property file: [path]\tess-two\bin\build.prop
[propertyfile] Updating property file: [path]\tess-two\bin\build.prop
[propertyfile] Updating property file: [path]\tess-two\bin\build.prop
-release-sign:
-post-build:
release:
BUILD SUCCESSFUL
Total time: 1 second
然后，我这样做： 文件 - >导入 - > Android的 - >现有代码进入工作区 - >浏览 - >选择当前工作区目录 - >确保在出现的列表中选择了tess-two - >完成。
然后我右键单击我自己的应用程序，进入属性 - > Android选项卡 - >添加...（在库部分下） - >选择tess-two - >单击确定 - >检查“库” - >好的。
然而，这一切后，我还是运行我的应用程序时，你得到follwing错误：
09-23 13:02:42.532: E/AndroidRuntime(675): Caused by: java.lang.UnsatisfiedLinkError: Couldn't load lept: findLibrary returned null
09-23 13:02:42.532: E/AndroidRuntime(675): at java.lang.Runtime.loadLibrary(Runtime.java:365)
09-23 13:02:42.532: E/AndroidRuntime(675): at java.lang.System.loadLibrary(System.java:535)
09-23 13:02:42.532: E/AndroidRuntime(675): at com.googlecode.tesseract.android.TessBaseAPI.<clinit>(TessBaseAPI.java:47)
为自己的应用程序的project.properties是：
target=android-16
android.library.reference.1=..\\OpenCV\\sdk\\java
android.library.reference.2=../Tesseract/tess-two
android.library=true
这是怎么回事？
如果任何人都可以给我一些关于我应该包含哪些其他信息以帮助他人回答问题的反馈，我真的很感激。 –
也包括你的project.properties。 – rmtheis
请勿为自己的项目检查“is Library”。苔丝二应该是图书馆项目。 – rmtheis