Question

Hi I am trying to build an system application in android build system which uses <zbar.jar> file" and "armeabi-v7a\libiconv.so" ,"armeabi-v7a\libzbarjni.so libs".

I get error as

09-21 21：14：32.614：E / AndroidRuntime（5217）：java.lang.NoSuchFieldError：no name with name ='data'signature ='Ljava / lang / Object;'在类Lnet / sourceforge / zbar / Image;

09-21 21：14：32.614：E / AndroidRuntime（5217）：at net.sourceforge.zbar.Image.init（Native Method）

09-21 21：14：32.614：E / AndroidRuntime（5217）：at net.sourceforge.zbar.Image。（Unknown Source）

I have added dependencies in android.mk as below:

LOCAL_STATIC_JAVA_LIBRARIES := libzbar
LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES += libzbar:libs/zbar.jar

include $(CLEAR_VARS)
LOCAL_MODULE        := libiconv
LOCAL_MODULE_CLASS  := SHARED_LIBRARIES
LOCAL_MODULE_SUFFIX := .so
LOCAL_MODULE_TAGS   := optional
LOCAL_SRC_FILES     := libiconv.so
include $(BUILD_PREBUILT)

include $(CLEAR_VARS)
LOCAL_MODULE        := libzbarjni
LOCAL_MODULE_CLASS  := SHARED_LIBRARIES
LOCAL_MODULE_SUFFIX := .so
LOCAL_MODULE_TAGS   := optional
LOCAL_SRC_FILES     := libzbarjni.so
include $(BUILD_PREBUILT)

i have also enabled 
"proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt" line in project.properties and 
added "-keep class net.sourceforge.zbar.** { *; }" in progaurd.cfg file.

感谢任何帮助。感谢

Answer 1

系统构建使用来自：build \ core \ proguard.flags

的proguard文件

如果你必须定义自定义proguard，那么在Android.mk中你需要提到文件路径：LOCAL_PROGUARD_FLAG_FILES：= proguard-project.txt

在proguard-project.txt中：

-keep class net.sourceforge.zbar。** {*; }

这将解决您的问题..我亲自测试过：）

Answer 2

尝试用BUILD_MULTI_PREBUILT替换LOCAL_SRC_FILES。

Answer 3

我找到了问题的答案。添加带有false值的LOCAL_PROGUARD_ENABLED标志解决了我的问题。添加此项将导致不优化jar文件，从而将数据变量保留在Image类中。我希望这对面临类似问题的人有所帮助。谢谢

使用android.mk

3 个答案: