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异常是

Note: there were 19 references to unknown classes.      You should check your configuration for typos.      (http://proguard.sourceforge.net/manual/troubleshooting.html#unknownclass)Note: there were 1170 unkept descriptor classes in kept class members.      You should consider explicitly keeping the mentioned classes      (using '-keep').      (http://proguard.sourceforge.net/manual/troubleshooting.html#descriptorclass)Note: there were 41 unresolved dynamic references to classes or interfaces.      You should check if you need to specify additional program jars.      (http://proguard.sourceforge.net/manual/troubleshooting.html#dynamicalclass)Warning: there were 1325 unresolved references to classes or interfaces.         You may need to add missing library jars or update their versions.         If your code works fine without the missing classes, you can suppress         the warnings with '-dontwarn' options.         (http://proguard.sourceforge.net/manual/troubleshooting.html#unresolvedclass)Warning: there were 8 unresolved references to program class members.         Your input classes appear to be inconsistent.         You may need to recompile the code.         (http://proguard.sourceforge.net/manual/troubleshooting.html#unresolvedprogramclassmember)Warning: Exception while processing task java.io.IOException: Please correct the above warnings first.Thread(Tasks limiter_2): destruction:demo:transformClassesAndResourcesWithProguardForBetaRelease FAILEDFAILURE: Build failed with an exception.* What went wrong:Execution failed for task ':demo:transformClassesAndResourcesWithProguardForBetaRelease'.> Job failed, see logs for details* Try:Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.* Get more help at https://help.gradle.orgBUILD FAILED in 40s60 actionable tasks: 17 executed, 38 from cache, 5 up-to-date17:05:49: Task execution finished 'assembleRelease'.

可以看出来，我们就是混淆有问题，接下来解决。

找到异常位置

解决

有些异常的原因，比如说是阿里云推送的混淆异常（上图），直接去官网找，有一些就需要摸索了。

-dontwarn com.xx.bbb.**-keep class com.xx.bbb.** {
    *;}# -keep interface com.xx.bbb.** {
    *;}

测试

当通过build工具，已经可以生产release版本APK，这说明我们已经初步达成~

buildTypes {
           debug {
               buildConfigField "boolean", "LOG_DEBUG", "true"            buildConfigField "boolean", "ENVIRONMENT_BETA", "true"            minifyEnabled true//混淆            multiDexEnabled true//分包 65535            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'        }        release {
               buildConfigField "boolean", "LOG_DEBUG", "false"            buildConfigField "boolean", "ENVIRONMENT_BETA", "true"            minifyEnabled true//混淆            multiDexEnabled true//分包 65535            shrinkResources true//资源缩减            zipAlignEnabled true//Zipalign优化->数据对齐->更快速调用APP内资源            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'        }        android.applicationVariants.all {
    //版本名称        variant -> generateAppName(variant)        }    }

如图，把debug版本也设置上混淆，直接运行查看即可。

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