android - 在某些类中使用JodaTime时，无法从Android Studio “Execution failed for task ':packageRelease'”生成签名的apk

Question

我正在使用Android Studio 1.2.2，并尝试使用proguard设置生成APK。我也在我的应用程序中使用 joda-time-2.7.jar 。

这给我带来以下错误信息。

错误:任务':app:packageRelease'的执行失败。

Unable to compute hash of D:\Voice\app\build\intermediates\classes-proguard\release\classes.jar

这是 gradle文件

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"

    defaultConfig {
       applicationId "com.xxxwew.voice"
       minSdkVersion 15
       targetSdkVersion 23
       versionCode 1
       versionName "1.0"
   }
   buildTypes {
      release {
         minifyEnabled true
         proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
     }
  }
}

dependencies {
   compile fileTree(include: ['*.jar'], dir: 'libs')
   testCompile 'junit:junit:4.12'
   compile 'com.android.support:appcompat-v7:23.1.1'
   compile 'com.android.support:design:23.1.1'
   compile files('libs/joda-time-2.7.jar')
}

这是Gradle Build中的 消息中的一些重要事项

Warning:org.joda.time.DateMidnight: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.DateTime: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.DateTimeZone: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.Days: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.DateTimeZone: can't find referenced class org.joda.convert.ToString
Warning:org.joda.time.Days: can't find referenced class org.joda.convert.ToString
Warning:org.joda.time.Duration: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.Hours: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.Hours: can't find referenced class org.joda.convert.ToString
Warning:org.joda.time.Instant: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.LocalDate: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.LocalDate: can't find referenced class org.joda.convert.ToString
Warning:org.joda.time.LocalDateTime: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.LocalDateTime: can't find referenced class org.joda.convert.ToString
Warning:org.joda.time.LocalTime: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.LocalTime: can't find referenced class org.joda.convert.ToString
Warning:org.joda.time.Minutes: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.Minutes: can't find referenced class org.joda.convert.ToString
Warning:org.joda.time.MonthDay: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.MonthDay: can't find referenced class org.joda.convert.ToString
Warning:org.joda.time.Months: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.Months: can't find referenced class org.joda.convert.ToString
Warning:org.joda.time.MutableDateTime: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.MutablePeriod: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.Period: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.Seconds: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.Seconds: can't find referenced class org.joda.convert.ToString
Warning:org.joda.time.Weeks: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.Weeks: can't find referenced class org.joda.convert.ToString
Warning:org.joda.time.YearMonth: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.YearMonth: can't find referenced class org.joda.convert.ToString
Warning:org.joda.time.Years: can't find referenced class org.joda.convert.FromString
Warning:org.joda.time.Years: can't find referenced class org.joda.convert.ToString
Warning:org.joda.time.base.AbstractDateTime: can't find referenced class org.joda.convert.ToString
Warning:org.joda.time.base.AbstractDuration: can't find referenced class org.joda.convert.ToString
Warning:org.joda.time.base.AbstractInstant: can't find referenced class org.joda.convert.ToString
Warning:org.joda.time.base.AbstractPeriod: can't find referenced class org.joda.convert.ToString
Warning:there were 37 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)
Exception while processing task java.io.IOException: Please correct the above warnings first.
  at proguard.Initializer.execute(Initializer.java:473)
  at proguard.ProGuard.initialize(ProGuard.java:233)
  at proguard.ProGuard.execute(ProGuard.java:98)
  at proguard.gradle.ProGuardTask.proguard(ProGuardTask.java:1074)
  at com.android.build.gradle.tasks.AndroidProGuardTask.doMinification(AndroidProGuardTask.java:139)
  at com.android.build.gradle.tasks.AndroidProGuardTask$1.run(AndroidProGuardTask.java:115)
  at com.android.builder.tasks.Job.runTask(Job.java:48)
  at com.android.build.gradle.tasks.SimpleWorkQueue$EmptyThreadContext.runTask(SimpleWorkQueue.java:41)
  at com.android.builder.tasks.WorkQueue.run(WorkQueue.java:227)
  at java.lang.Thread.run(Thread.java:745)

您对此有任何想法吗？

谢谢。

Answer 1

我找到了这个问题的答案。

应在保护文件中添加以下几行:

-dontwarn org.joda.convert.**
-dontwarn org.joda.time.**
-keep class org.joda.time.** { *; }
-keep interface org.joda.time.** { *;}

我要感谢 Exaqt的帮助。