在android中，编译的项目使用到第三方jar的导入方法 终极版！

1,在android系统环境中编译自己的项目时，往往会用到第三方jar包。这些jar包在eclipse中加入编译，一路畅通，由于eclipse已经帮助你配置好了。可是当把这个项目复制到系统环境中编译时，jar包就会无论用。

以下是自己遇到的问题。通过查找网上的资料，遇到各种问题。最后最终解决。通过博客总结一下，给大家分享。

条件：比如：先在eclipse中开发的应用。用到support-v4包和第三方pinyin4j-2.5.0.jar。

移植到系统项目中，编译不通过。以系统的music应用为例。

1,首先之是增加Android.mk文件

LOCAL_PATH:= $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE_TAGS := optional

LOCAL_SRC_FILES := $(call all-java-files-under, src) \

src/com/android/music/IMediaPlaybackService.aidl

LOCAL_PACKAGE_NAME := Music

LOCAL_PROGUARD_FLAG_FILES := proguard.flags

include $(BUILD_PACKAGE)

编译会找不到引用的包中对应的类和方法。

2,然后在声明包，在.mk中加入

LOCAL_PATH:= $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE_TAGS := optional

#声明包名

LOCAL_STATIC_JAVA_LIBRARIES := android-support-v4 pinyin4j-2.5.0

LOCAL_SRC_FILES := $(call all-java-files-under, src) \

src/com/android/music/aidl/IMediaService.aidl

LOCAL_PACKAGE_NAME := Music

include $(BUILD_PACKAGE)

include $(CLEAR_VARS)

#指明包的位置

LOCAL_PREBUILT_STATIC_JAVA_LIBRARIES := pinyin4j-2.5.0:lib/pinyin4j-2.5.0.jar

include $(BUILD_MULTI_PREBUILT)

3,这时编译有可能还会报错。（...can't find superclass or interface...）

Warning: demo.Pinyin4jAppletDemo$1: can't find superclass or interface java.awt.event.WindowAdapter

Warning: demo.Pinyin4jAppletDemo$3: can't find superclass or interface java.awt.event.ActionListener

Warning: demo.Pinyin4jAppletDemo$2: can't find superclass or interface java.awt.event.ActionListener

Warning: demo.Pinyin4jAppletDemo: can't find superclass or interface javax.swing.JApplet

Warning: demo.Pinyin4jAppletDemo$1: can't find referenced class java.awt.event.WindowAdapter

Warning: demo.Pinyin4jAppletDemo$1: can't find referenced method 'void stop()' in class demo.Pinyin4jAppletDemo

Warning: demo.Pinyin4jAppletDemo$1: can't find referenced method 'void destroy()' in class demo.Pinyin4jAppletDemo

Warning: demo.Pinyin4jAppletDemo$1: can't find referenced class java.awt.event.WindowAdapter

Warning: demo.Pinyin4jAppletDemo$1: can't find referenced class java.awt.event.WindowEvent

Warning: demo.Pinyin4jAppletDemo$3: can't find referenced class javax.swing.JComboBox

Warning: demo.Pinyin4jAppletDemo$3: can't find referenced class javax.swing.JComboBox

这好像的混淆编译造成的错误，然后在应用的根文件夹下建立proguard.cfg这个文件，在里面输入：

-dontwarn demo.**

-keep class demo.** { *;}

查看编译报的错误，有几个包出错。就在里面加几个这种声明。这里是有demo.下的java报错，仅仅加这个即可。然后在Android.mk中加入此文件的标识。

LOCAL_PROGUARD_FLAG_FILES := proguard.cfg

然后在编译。应该就能够通过。

大功告成。。

。

2,然后后来又用到还有一个jar包，出现了新问题：下面是出现的warring：

Warning: org.opencv.android.CameraBridgeViewBase: can't find referenced class org.opencv.R$styleable

Warning: org.opencv.android.CameraBridgeViewBase: can't find referenced class org.opencv.R$styleable

Warning: org.opencv.android.CameraBridgeViewBase: can't find referenced class org.opencv.R

×××××

Warning: there were 3 unresolved references to classes or interfaces.

You may need to specify additional library jars (using '-libraryjars'),

or perhaps the '-dontskipnonpubliclibraryclasses' option.

使用上面的方法就无论用。

可是在proguard.cfg文件里加入一句这个就能够忽略warring。

-ignorewarnings

解决的方法都是在网上找了，自己总结一下。谢谢各位在网上的分享。