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Android二维码开源项目zxing编译
首先这里是自己花了整整一个下午的时间查找整理出来的，借鉴了一个比较不错博客，也很感谢他的详细步骤。
支持的格式如下：
我的环境是win8.1专业版。
zxing官网说明：https://github.com/zxing/zxing/wiki/Getting-Started-Developing
源码下载：https://github.com/zxing/zxing
或者releases版本：https://github.com/zxing/zxing/releases（其实都差不多一样）
需要的工具：
Ant: http://ant.apache.org/bindownload.cgi
Maven: http://maven.apache.org/download.cgi
然后下载的东西都解压我的是桌面临时创建的一个文件夹test
下面就是分别配置ant和Maven环境变量了，至于怎么进入系统环境变量，我就不那么墨迹的说了，只给截图我认为关键的地方。
两个方法一样，我这里配置ant一个给大家看看：
就是你刚刚解压的位置我的如下到bin目录下复制
C:\Users\xiang\Desktop\test\apache-ant-1.9.4-bin\apache-ant-1.9.4\bin;
path里面最后加英文分号，然后把我的那个路径贴进去，你们的都要贴自己的路径，
然后运行cmd，输入ant验证
这就ok了。
Maven的配置方法不在赘述，
这就ok了。
确保你已经有了java运行环境，如JAVA_HOME、CLASSPATH、PATH都配置好了
进入到zxing-master\android目录，输入命令：android update project --path .
（上面的命令不要省略“--”和后面的点）
1 C:\Users\xiang\Desktop\test\zxing-master\android>android update project --path. 2 Error: Flag ‘--path.‘ is not valid for ‘update project‘. 3 4 Usage: 5 android [global options] update project [action options] 6 Global options: 7 -h --help : Help on a specific command. 8 -v --verbose : Verbose mode, shows errors, warnings and all messages. 9 --clear-cache: Clear the SDK Manager repository manifest cache.10 -s --silent : Silent mode, shows errors only.11 12 Action "update project":13 Updates an Android project (must already have an AndroidManifest.xml).14 Options:15 -l --library : Directory of an Android library to add, relative to this16 project‘s directory.17 -p --path : The project‘s directory. [required]18 -n --name : Project name.19 -t --target : Target ID to set for the project.20 -s --subprojects: Also updates any projects in sub-folders, such as test21 projects.
出错了，需要我们提供一个target，输入命令：android list targets
C:\Users\xiang\Desktop\test\zxing-master\android>android list targetsAvailable Android targets:----------id: 1 or "android-8" Name: Android 2.2 Type: Platform API level: 8 Revision: 3 Skins: HVGA, QVGA, WQVGA400, WQVGA432, WVGA800 (default), WVGA854 Tag/ABIs : default/armeabi----------id: 2 or "android-18" Name: Android 4.3.1 Type: Platform API level: 18 Revision: 3 Skins: HVGA, QVGA, WQVGA400, WQVGA432, WSVGA, WVGA800 (default), WVGA854, WXGA720, WXGA800, WXGA800-7in Tag/ABIs : default/armeabi-v7a, default/x86----------id: 3 or "android-19" Name: Android 4.4.2 Type: Platform API level: 19 Revision: 4 Skins: HVGA, QVGA, WQVGA400, WQVGA432, WSVGA, WVGA800 (default), WVGA854, WXGA720, WXGA800, WXGA800-7in Tag/ABIs : default/armeabi-v7a, default/x86----------id: 4 or "android-21" Name: Android 5.0 Type: Platform API level: 21 Revision: 1 Skins: HVGA, QVGA, WQVGA400, WQVGA432, WSVGA, WVGA800 (default), WVGA854, WXGA720, WXGA800, WXGA800-7in Tag/ABIs : android-tv/armeabi-v7a, android-tv/x86, default/armeabi-v7a, default/x86, default/x86_64----------id: 5 or "Google Inc.:Google APIs:8" Name: Google APIs Type: Add-On Vendor: Google Inc. Revision: 2 Description: Android + Google APIs Based on Android 2.2 (API level 8) Libraries: * com.google.android.maps (maps.jar) API for Google Maps Skins: HVGA, QVGA, WQVGA400, WQVGA432, WVGA800 (default), WVGA854 Tag/ABIs : default/armeabi----------id: 6 or "Google Inc.:Google APIs:18" Name: Google APIs Type: Add-On Vendor: Google Inc. Revision: 3 Description: Android + Google APIs Based on Android 4.3.1 (API level 18) Libraries: * com.google.android.media.effects (effects.jar) Collection of video effects * com.android.future.usb.accessory (usb.jar) API for USB Accessories * com.google.android.maps (maps.jar) API for Google Maps Skins: HVGA, QVGA, WQVGA400, WQVGA432, WSVGA, WVGA800 (default), WVGA854, WXGA720, WXGA800, WXGA800-7in Tag/ABIs : default/armeabi-v7a----------id: 7 or "Google Inc.:Glass Development Kit Preview:19" Name: Glass Development Kit Preview Type: Add-On Vendor: Google Inc. Revision: 10 Description: Preview of the Glass Development Kit Based on Android 4.4.2 (API level 19) Libraries: * com.google.android.glass (gdk.jar) APIs for Glass Development Kit Preview Skins: HVGA, QVGA, WQVGA400, WQVGA432, WSVGA, WVGA800 (default), WVGA854, WXGA720, WXGA800, WXGA800-7in Tag/ABIs : no ABIs.----------id: 8 or "Google Inc.:Google APIs:19" Name: Google APIs Type: Add-On Vendor: Google Inc. Revision: 8 Description: Android + Google APIs Based on Android 4.4.2 (API level 19) Libraries: * com.google.android.media.effects (effects.jar) Collection of video effects * com.android.future.usb.accessory (usb.jar) API for USB Accessories * com.google.android.maps (maps.jar) API for Google Maps Skins: HVGA, QVGA, WQVGA400, WQVGA432, WSVGA, WVGA800 (default), WVGA854, WXGA720, WXGA800, WXGA800-7in Tag/ABIs : default/armeabi-v7a----------id: 9 or "Google Inc.:Google APIs (x86 System Image):19" Name: Google APIs (x86 System Image) Type: Add-On Vendor: Google Inc. Revision: 8 Description: Android x86 + Google APIs Based on Android 4.4.2 (API level 19) Libraries: * com.google.android.media.effects (effects.jar) Collection of video effects * com.android.future.usb.accessory (usb.jar) API for USB Accessories * com.google.android.maps (maps.jar) API for Google Maps Skins: HVGA, QVGA, WQVGA400, WQVGA432, WSVGA, WVGA800 (default), WVGA854, WXGA720, WXGA800, WXGA800-7in Tag/ABIs : default/x86----------id: 10 or "Google Inc.:Google APIs:21" Name: Google APIs Type: Add-On Vendor: Google Inc. Revision: 1 Description: Android + Google APIs Based on Android 5.0 (API level 21) Libraries: * com.google.android.media.effects (effects.jar) Collection of video effects * com.android.future.usb.accessory (usb.jar) API for USB Accessories * com.google.android.maps (maps.jar) API for Google Maps Skins: HVGA, QVGA, WQVGA400, WQVGA432, WSVGA, WVGA800 (default), WVGA854, WXGA720, WXGA800, WXGA800-7in Tag/ABIs : no ABIs.
根据输出的ID，加上target，命令：android update project --target 2 --path .
C:\Users\xiang\Desktop\test\zxing-master\android>android update project --target 2 --path .Updated and renamed default.properties to project.propertiesUpdated local.propertiesNo project name specified, using Activity name ‘CaptureActivity‘.If you wish to change it, edit the first line of build.xml.Added file C:\Users\xiang\Desktop\test\zxing-master\android\build.xmlAdded file C:\Users\xiang\Desktop\test\zxing-master\android\proguard-project.txt
会生成以下文件：
上面生成的文件我已经标注出来了。
其中：local.properties文件的内容是：SDK的目录
# This file is automatically generated by Android Tools.# Do not modify this file -- YOUR CHANGES WILL BE ERASED!## This file must *NOT* be checked into Version Control Systems,# as it contains information specific to your local configuration.# location of the SDK. This is only used by Ant# For customization when using a Version Control System, please read the# header note.sdk.dir=D:\\adt-bundle-windows-x86_64-20130917\\sdk
编译jar包在zxing-master\core目录下输入：mvn -DskipTests -Dgpg.skip=true install
这里有些地方可能被和谐，导致无法下载，至于FQ或者怎么的，各自显神通吧。
我的成功后如下，你们看看
这就表明ok了。
运行完之后core目录下会生成一个target目录，其中：core-3.1.0.jar就是我们需要的jar包
这个后缀名跟选的版本有点关系，都能使用，我选的这个是id为2的，也就是4.3.1。
我也选过5.0那个，出来的效果是一样的，直接就可以使用了。
下面开始编译Android项目，生成apk了，这里有两种方法：
一、命令实现
继续在cmd下执行，进入zxing-master\android里输入ant debug
C:\Users\xiang\Desktop\test\zxing-master\android>ant debugBuildfile: C:\Users\xiang\Desktop\test\zxing-master\android\build.xml-set-mode-check:-set-debug-files:-check-env: [checkenv] Android SDK Tools Revision 23.0.5 [checkenv] Installed at D:\adt-bundle-windows-x86_64-20130917\sdk-setup: [echo] Project Name: CaptureActivity [gettype] Project Type: Application-set-debug-mode:-debug-obfuscation-check:-pre-build:-build-setup:[getbuildtools] Using latest Build Tools: 21.0.2 [echo] Resolving Build Target for CaptureActivity...[gettarget] Project Target: Android 4.3.1[gettarget] API level: 18 [echo] ---------- [echo] Creating output directories if needed... [mkdir] Created dir: C:\Users\xiang\Desktop\test\zxing-master\android\bin [mkdir] Created dir: C:\Users\xiang\Desktop\test\zxing-master\android\bin\res [mkdir] Created dir: C:\Users\xiang\Desktop\test\zxing-master\android\bin\rsObj [mkdir] Created dir: C:\Users\xiang\Desktop\test\zxing-master\android\bin\rsLibs [mkdir] Created dir: C:\Users\xiang\Desktop\test\zxing-master\android\gen [mkdir] Created dir: C:\Users\xiang\Desktop\test\zxing-master\android\bin\classes [mkdir] Created dir: C:\Users\xiang\Desktop\test\zxing-master\android\bin\dexedLibs [echo] ---------- [echo] Resolving Dependencies for CaptureActivity...[dependency] Library dependencies:[dependency] No Libraries[dependency][dependency] ------------------ [echo] ---------- [echo] Building Libraries with ‘debug‘... [subant] No sub-builds to iterate on-code-gen:[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... [echo] ---------- [echo] Handling Resources... [aapt] Generating resource IDs... [echo] ---------- [echo] Handling BuildConfig class...[buildconfig] Generating BuildConfig class.-pre-compile:-compile: [javac] Compiling 75 source files to C:\Users\xiang\Desktop\test\zxing-master\android\bin\classes [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:57: 错误: 找不到符号 [javac] cameraResolution = CameraConfigurationUtils.findBestPreviewSizeValue(parameters, screenResolution); [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:79: 错误: 找不到符号 [javac] CameraConfigurationUtils.setFocus( [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:87: 错误: 找不到符号 [javac] CameraConfigurationUtils.setInvertColor(parameters); [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:91: 错误: 找不到符号 [javac] CameraConfigurationUtils.setBarcodeSceneMode(parameters); [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:95: 错误: 找不到符号 [javac] CameraConfigurationUtils.setVideoStabilization(parameters); [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:96: 错误: 找不到符号 [javac] CameraConfigurationUtils.setFocusArea(parameters); [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:97: 错误: 找不到符号 [javac] CameraConfigurationUtils.setMetering(parameters); [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:151: 错误: 找不到符号 [javac] CameraConfigurationUtils.setTorch(parameters, newSetting); [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:154: 错误: 找不到符号 [javac] CameraConfigurationUtils.setBestExposure(parameters, newSetting); [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] 9 个错误BUILD FAILEDD:\adt-bundle-windows-x86_64-20130917\sdk\tools\ant\build.xml:720: The following error occurred while executing this line:D:\adt-bundle-windows-x86_64-20130917\sdk\tools\ant\build.xml:734: Compile failed; see the compiler error output for details.Total time: 4 secondsC:\Users\xiang\Desktop\test\zxing-master\android>
一般有两个问题：
一、[gettarget] WARNING: Attribute minSdkVersion in AndroidManifest.xml (15) is higher than the project target API level (14)
原因是：
project.properties文件中配置的target=android-14而AndroidManifest.xml文件中
<uses-sdk android:minSdkVersion="15" android:targetSdkVersion="19"/>
修改ses-sdk android:minSdkVersion="14"就可以了。
（这个我的版本比较高，就没有报这个错）
二、是JDK版本的问题
修改：D:\adt-bundle-windows-x86_64-20130917\sdk\tools\ant\build.xml
<!-- compilation options --> <property name="java.encoding" value="UTF-8" /> <property name="java.target" value="1.5" /> <property name="java.source" value="1.5" /> <property name="java.compilerargs" value="" /> <property name="java.compiler.classpath" value="" />
为如下
<!-- compilation options --> <property name="java.encoding" value="UTF-8" /> <property name="java.target" value="7" /> <property name="java.source" value="7" /> <property name="java.compilerargs" value="" /> <property name="java.compiler.classpath" value="" />
改好之后又有新问题了
C:\Users\xiang\Desktop\test\zxing-master\android>ant debugBuildfile: C:\Users\xiang\Desktop\test\zxing-master\android\build.xml-set-mode-check:-set-debug-files:-check-env: [checkenv] Android SDK Tools Revision 23.0.5 [checkenv] Installed at D:\adt-bundle-windows-x86_64-20130917\sdk-setup: [echo] Project Name: CaptureActivity [gettype] Project Type: Application-set-debug-mode:-debug-obfuscation-check:-pre-build:-build-setup:[getbuildtools] Using latest Build Tools: 21.0.2 [echo] Resolving Build Target for CaptureActivity...[gettarget] Project Target: Android 4.3.1[gettarget] API level: 18 [echo] ---------- [echo] Creating output directories if needed... [mkdir] Created dir: C:\Users\xiang\Desktop\test\zxing-master\android\bin\rsObj [mkdir] Created dir: C:\Users\xiang\Desktop\test\zxing-master\android\bin\rsLibs [echo] ---------- [echo] Resolving Dependencies for CaptureActivity...[dependency] Library dependencies:[dependency] No Libraries[dependency][dependency] ------------------ [echo] ---------- [echo] Building Libraries with ‘debug‘... [subant] No sub-builds to iterate on-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... [echo] ---------- [echo] Handling Resources... [aapt] Found Deleted Target File [aapt] Generating resource IDs... [echo] ---------- [echo] Handling BuildConfig class...[buildconfig] Generating BuildConfig class.-pre-compile:-compile: [javac] Compiling 73 source files to C:\Users\xiang\Desktop\test\zxing-master\android\bin\classes [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:57: 错误: 找不到符号 [javac] cameraResolution = CameraConfigurationUtils.findBestPreviewSizeValue(parameters, screenResolution); [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:79: 错误: 找不到符号 [javac] CameraConfigurationUtils.setFocus( [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:87: 错误: 找不到符号 [javac] CameraConfigurationUtils.setInvertColor(parameters); [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:91: 错误: 找不到符号 [javac] CameraConfigurationUtils.setBarcodeSceneMode(parameters); [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:95: 错误: 找不到符号 [javac] CameraConfigurationUtils.setVideoStabilization(parameters); [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:96: 错误: 找不到符号 [javac] CameraConfigurationUtils.setFocusArea(parameters); [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:97: 错误: 找不到符号 [javac] CameraConfigurationUtils.setMetering(parameters); [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:151: 错误: 找不到符号 [javac] CameraConfigurationUtils.setTorch(parameters, newSetting); [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera\CameraConfigurationManager.java:154: 错误: 找不到符号 [javac] CameraConfigurationUtils.setBestExposure(parameters, newSetting); [javac] ^ [javac] 符号: 变量 CameraConfigurationUtils [javac] 位置: 类 CameraConfigurationManager [javac] 9 个错误BUILD FAILEDD:\adt-bundle-windows-x86_64-20130917\sdk\tools\ant\build.xml:720: The following error occurred while executing this line:D:\adt-bundle-windows-x86_64-20130917\sdk\tools\ant\build.xml:734: Compile failed; see the compiler error output for details.Total time: 4 secondsC:\Users\xiang\Desktop\test\zxing-master\android>
没有CameraConfigurationUtils类
搜索下就可以找到，应该在android-core里面有这个类
直接把这个目录拷贝到C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxing\client\android\camera里面
然后再编译，效果图如下，不用多说了
apk已经生成了。你看看
看bin里已经有对应的apk了，自己跑跑看。
二、第二种方法就是直接导入到Eclipse，这种方法我不再详细演示了，直接导入android项目,然后把添加lib文件夹，放入前面生成的jar包，
加入对应的那个类
运行的时候可能会报错。
12-11 17:36:01.470: E/AndroidRuntime(13311): FATAL EXCEPTION: main12-11 17:36:01.470: E/AndroidRuntime(13311): java.lang.ExceptionInInitializerError12-11 17:36:01.470: E/AndroidRuntime(13311): at java.lang.Class.newInstanceImpl(Native Method)12-11 17:36:01.470: E/AndroidRuntime(13311): at java.lang.Class.newInstance(Class.java:1319)12-11 17:36:01.470: E/AndroidRuntime(13311): at android.app.Instrumentation.newActivity(Instrumentation.java:1053)12-11 17:36:01.470: E/AndroidRuntime(13311): at com.lbe.security.service.core.client.b.x.newActivity(Unknown Source)12-11 17:36:01.470: E/AndroidRuntime(13311): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1996)12-11 17:36:01.470: E/AndroidRuntime(13311): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2106)12-11 17:36:01.470: E/AndroidRuntime(13311): at android.app.ActivityThread.access$600(ActivityThread.java:137)12-11 17:36:01.470: E/AndroidRuntime(13311): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1202)12-11 17:36:01.470: E/AndroidRuntime(13311): at android.os.Handler.dispatchMessage(Handler.java:99)12-11 17:36:01.470: E/AndroidRuntime(13311): at android.os.Looper.loop(Looper.java:137)12-11 17:36:01.470: E/AndroidRuntime(13311): at android.app.ActivityThread.main(ActivityThread.java:4819)12-11 17:36:01.470: E/AndroidRuntime(13311): at java.lang.reflect.Method.invokeNative(Native Method)12-11 17:36:01.470: E/AndroidRuntime(13311): at java.lang.reflect.Method.invoke(Method.java:511)12-11 17:36:01.470: E/AndroidRuntime(13311): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)12-11 17:36:01.470: E/AndroidRuntime(13311): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)12-11 17:36:01.470: E/AndroidRuntime(13311): at dalvik.system.NativeStart.main(Native Method)12-11 17:36:01.470: E/AndroidRuntime(13311): Caused by: java.lang.NoClassDefFoundError: com.google.zxing.ResultMetadataType12-11 17:36:01.470: E/AndroidRuntime(13311): at com.google.zxing.client.android.CaptureActivity.<clinit>(CaptureActivity.java:93)12-11 17:36:01.470: E/AndroidRuntime(13311): ... 16 more
按照网上很多说法
到处搜索解决方案，终于在google的帮助下解决了。
在eclipse中 Properties -> Java Build Path -> "Order and Export"
在Order and Export选项卡中将core.jar提前到第一位 并选中它
然后clean你的工程,这一步非常重要，别忘记了
重新编译运行就可以了
估计是在core.jar之前的包里已经有了同名的class所以编译之后产生的apk运行时找不到真正的引用。而且这个包也需要被同时发布到程序中去
如果还是有错误的话，那就缺少了javase-3.1.0.jar库
生成办法跟core一样C:\Users\xiang\Desktop\test\zxing-master\javase>mvn -DskipTests -Dgpg.skip=true install
后面我就不贴图了，同样把对应的包放入lib然后add buildpath编译，还有问题，你就考虑考虑吧Eclipse换个高版本的吧。
至于扫描效果图，我真机也就不展示了，截个图给你们看看吧
正常运行代码我稍后添加。
Android二维码开源项目zxing编译
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