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 this 16 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 test 21 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 targets
Available 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, W
XGA720, 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, W
XGA720, 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, W
XGA720, 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, W
XGA720, 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, W
XGA720, 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, W
XGA720, 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, W
XGA720, 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, W
XGA720, 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.properties Updated local.properties No 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.xml Added 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 debug
Buildfile: 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\re
s
[mkdir] Created dir: C:\Users\xiang\Desktop\test\zxing-master\android\bin\rs
Obj
[mkdir] Created dir: C:\Users\xiang\Desktop\test\zxing-master\android\bin\rs
Libs
[mkdir] Created dir: C:\Users\xiang\Desktop\test\zxing-master\android\gen
[mkdir] Created dir: C:\Users\xiang\Desktop\test\zxing-master\android\bin\cl
asses
[mkdir] Created dir: C:\Users\xiang\Desktop\test\zxing-master\android\bin\de
xedLibs
[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-maste
r\android\bin\classes
[javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxin
g\client\android\camera\CameraConfigurationManager.java:57: 错误: 找不到符号
[javac] cameraResolution = CameraConfigurationUtils.findBestPreviewSizeV
alue(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\zxin
g\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\zxin
g\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\zxin
g\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\zxin
g\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\zxin
g\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\zxin
g\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\zxin
g\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\zxin
g\client\android\camera\CameraConfigurationManager.java:154: 错误: 找不到符号
[javac] CameraConfigurationUtils.setBestExposure(parameters, newSettin
g);
[javac] ^
[javac] 符号: 变量 CameraConfigurationUtils
[javac] 位置: 类 CameraConfigurationManager
[javac] 9 个错误
BUILD FAILED
D:\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 faile
d; see the compiler error output for details.
Total time: 4 seconds
C:\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 debug
Buildfile: 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\rs
Obj
[mkdir] Created dir: C:\Users\xiang\Desktop\test\zxing-master\android\bin\rs
Libs
[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-maste
r\android\bin\classes
[javac] C:\Users\xiang\Desktop\test\zxing-master\android\src\com\google\zxin
g\client\android\camera\CameraConfigurationManager.java:57: 错误: 找不到符号
[javac] cameraResolution = CameraConfigurationUtils.findBestPreviewSizeV
alue(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\zxin
g\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\zxin
g\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\zxin
g\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\zxin
g\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\zxin
g\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\zxin
g\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\zxin
g\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\zxin
g\client\android\camera\CameraConfigurationManager.java:154: 错误: 找不到符号
[javac] CameraConfigurationUtils.setBestExposure(parameters, newSettin
g);
[javac] ^
[javac] 符号: 变量 CameraConfigurationUtils
[javac] 位置: 类 CameraConfigurationManager
[javac] 9 个错误
BUILD FAILED
D:\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 faile
d; see the compiler error output for details.
Total time: 4 seconds
C:\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: main 12-11 17:36:01.470: E/AndroidRuntime(13311): java.lang.ExceptionInInitializerError 12-11 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.ResultMetadataType 12-11 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。
时间： 2024-07-30 14:05:16