android中代码混淆android.content.res.XmlResourceParser extends or implements program class org.

1、今天运行代码时报如下错误，这个错误找了好久终于解决了，在网上也找了好多方法，但都不是自己想要的。

Warning:library class android.content.res.XmlResourceParser extends or implements program class org.xmlpull.v1.XmlPullParser
Warning:library class android.content.Intent depends on program class org.xmlpull.v1.XmlPullParser
Warning:library class android.content.IntentFilter depends on program class org.xmlpull.v1.XmlSerializer
Warning:library class android.content.IntentFilter depends on program class org.xmlpull.v1.XmlPullParser
Warning:library class android.content.res.ColorStateList depends on program class org.xmlpull.v1.XmlPullParser
Warning:library class android.graphics.drawable.BitmapDrawable depends on program class org.xmlpull.v1.XmlPullParser
Warning:library class android.graphics.drawable.ColorDrawable depends on program class org.xmlpull.v1.XmlPullParser
Warning:library class android.graphics.drawable.Drawable depends on program class org.xmlpull.v1.XmlPullParser
Warning:library class android.graphics.drawable.GradientDrawable depends on program class org.xmlpull.v1.XmlPullParser
Warning:library class android.graphics.drawable.InsetDrawable depends on program class org.xmlpull.v1.XmlPullParser
Warning:library class android.graphics.drawable.LayerDrawable depends on program class org.xmlpull.v1.XmlPullParser
Warning:library class android.util.Xml depends on program class org.xmlpull.v1.XmlPullParser
Warning:library class android.util.Xml depends on program class org.xmlpull.v1.XmlSerializer
Warning:library class android.util.Xml depends on program class org.xmlpull.v1.XmlPullParser
Warning:library class android.view.LayoutInflater depends on program class org.xmlpull.v1.XmlPullParser
Warning:there were 18 instances of library classes depending on program classes.
Warning:Exception while processing task java.io.IOException: Please correct the above warnings first.
Error:Execution failed for task ':andBase:transformClassesAndResourcesWithProguardForRelease'.

> Job failed, see logs for details
2、其实报错的主要原因是代码混淆了，就是引入的jar包中存在的类，在自己的代码或类库中又重新定义了。

1. 混淆配置

一般情况下，app module 的

build.gradle

文件默认会有如下结构：下面的结构就可以正常运行

android {
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}

因为开启混淆会使编译时间变长，所以

debug

模式下不应该开启。我们需要做的是：
将

release

下

minifyEnabled

的值改为

true

，打开混淆；
加上

shrinkResources true

，打开资源压缩。
修改后文件内容如下：

android {
buildTypes {
release {
minifyEnabled true
shrinkResources true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}