android - 带有 IntelliJ Idea ClassNotFoundException 的 Android 上的 Scala

Question

我尝试将 sbt 和 maven 用于 android-scala，我非常喜欢 maven 来完成整个发布工作（ProGuard-ing scala 标准库等）。但我想要在我的 IDE - IntelliJ IDEA 中进行轻量级的重新编译循环进行开发。

问题是 scala 文件无法编译。我这样配置我的项目：

创建安卓项目
添加了scala方面
将 Scala 编译器设置为全局
添加了对 scala 库（全局）的依赖并将其设置为“提供”

我添加了一个 scala 对象并从 java Activity 中引用它。ClassNotFoundException 并强制关闭。它编译干净（而且非常快）。

我以相同的方式创建了一个普通的旧 java 项目，并使用相同的全局库，它工作正常。对 apk 的检查显示它包含 scala 源（！）文件。所以显然它没有尝试编译。

哦，我的手机已经预装了来自 Play 商店的 scala 安装程序。

我使用 IntelliJ IDEA 11 社区。几个月前我第一次尝试这个，它奏效了。

更新它可以在不同的机器上运行。

score 0 · Accepted Answer

您可能不得不摆弄您的“proguard.cfg”文件。

这是我在使用 Scala 2.10 和 Android 以及 IntelliJ IDE 的项目中使用的一个（更改第一个选项以匹配您的包名称）：

##
## Keep classes of named package
##
-keep public class **.keithpinson.**
## ## ## ## ## ## ## ## ## ## ## ## ##


##
## RELEASE ONLY
##
##-optimizationpasses 3
##-overloadaggressively
##-repackageclasses ''
##-allowaccessmodification
##-optimizations !code/simplification/arithmetic
##         ,!field/*,!class/merging/*,!code/allocation/variable
##-keepattributes *Annotation*

##
## DEBUG ONLY
##
-dontobfuscate
-dontoptimize
-keepattributes Exceptions,InnerClasses,Signature,Deprecated,SourceFile,LineNumberTable,*Annotation*,EnclosingMethod
## -printmapping mapping.txt


##
## ALL VERSIONS
##
-dontpreverify
-dontskipnonpubliclibraryclasses
-dontskipnonpubliclibraryclassmembers
-dontusemixedcaseclassnames


## Keep Limited Serializable Capability
##-keepclassmembers class * implements java.io.Serializable {
##    static long serialVersionUID;
##    private void writeObject(java.io.ObjectOutputStream);
##    private void readObject(java.io.ObjectInputStream);
##    java.lang.Object writeReplace();
##    java.lang.Object readResolve();
##}

## Keep All Serializable Capability
##-keep class * implements java.io.Serializable { *; }"





##
## ANDROID SETTINGS
##
-dontwarn com.google.common.collect.MinMaxPriorityQueue
-dontwarn com.google.common.primitives.UnsignedBytes$*

-dontnote android.app.backup.BackupAgentHelper
-dontnote com.android.vending.licensing.ILicensingService

-keep public class * extends android.app.Activity
-keep public class * extends android.app.Application
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep public class * extends android.content.ContentProvider
-keep public class * extends android.app.backup.BackupAgentHelper
-keep public class * extends android.preference.Preference
-keep public class com.android.vending.licensing.ILicensingService

-keepclasseswithmembernames class * {
    native <methods>;
}

-keep public class * extends android.view.View {
    public <init>(android.content.Context);
    public <init>(android.content.Context, android.util.AttributeSet);
    public <init>(android.content.Context, android.util.AttributeSet, int);
    public void set*(...);
}

-keepclasseswithmembers class * {
    public <init>(android.content.Context, android.util.AttributeSet);
}

-keepclasseswithmembers class * {
    public <init>(android.content.Context, android.util.AttributeSet, int);
}

-keepclassmembers class * extends android.app.Activity {
   public void *(android.view.View);
}

-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}

-keep class * implements android.os.Parcelable {
  public static final android.os.Parcelable$Creator *;
}

# R classes may be built out of sequence so don't proguard them
-keep public class **.R { *; }
-keepclassmembers class **.R$* {
    public static <fields>;
}

# Removes all calls to Log. Delete the methods you want to keep.
-assumenosideeffects class android.util.Log {
    public static int v(...);
    #public static int d(...);
    public static int i(...);
    #public static int w(...);
    #public static int e(...);
    #public static int wtf(...);
}

## Fixes ==> Warning: ... can't find referenced class javax.xml.stream.events.XMLEvent
## -dontwarn javax.xml.**


## If using Guice
## -keep class com.google.common.base.Finalizable* {
##   <fields>;
##   <methods>;
## }
##
## -keep class com.google.common.base.internal.Finalizer {
##   <fields>;
##   <methods>;
## }


##
## SCALA SETTINGS
##
-dontwarn **$$anonfun$*
-dontwarn scala.android.**
-dontwarn scala.beans.ScalaBeanInfo
-dontwarn scala.collection.generic.GenTraversableFactory
-dontwarn scala.collection.immutable.RedBlack$Empty
-dontwarn scala.concurrent.forkjoin.**
-dontwarn scala.reflect.**
-dontwarn scala.sys.process.**
-dontwarn scala.tools.**,plugintemplate.**


#(org.xml.sax.EntityResolver)Class.forName(variable).newInstance()
-dontnote org.xml.sax.EntityResolver

#(org.apache.james.mime4j.storage.StorageProvider)Class.forName(variable).newInstance()
-dontnote org.apache.james.mime4j.storage.DefaultStorageProvider

-dontnote scala.android.app.Activity


## Keep All Scala Classes
##-keep class scala.** { *; }

-keep class scala.android.package**
-keep class * extends scala.android.app.Activity

## Fixes ==> Warning: ... can't find referenced class sun.misc.Unsafe
-libraryjars libs/jsr305-2.0.1.jar
-dontwarn sun.misc.Unsafe


-keep class * extends scala.runtime.MethodCache {
    public <methods>;
}

-keepclassmembers class * {
    ** MODULE$;
}

-keepclassmembernames class scala.concurrent.forkjoin.ForkJoinPool {
    long eventCount;
    int workerCounts;
    int runControl;
    scala.concurrent.forkjoin.ForkJoinPool$WaitQueueNode syncStack;
    scala.concurrent.forkjoin.ForkJoinPool$WaitQueueNode spareStack;
}

-keepclassmembernames class scala.concurrent.forkjoin.ForkJoinWorkerThread {
    int base;
    int sp;
    int runState;
}

-keepclassmembernames class scala.concurrent.forkjoin.ForkJoinTask {
    int status;
}

-keepclassmembernames class scala.concurrent.forkjoin.LinkedTransferQueue {
    scala.concurrent.forkjoin.LinkedTransferQueue$PaddedAtomicReference head;
    scala.concurrent.forkjoin.LinkedTransferQueue$PaddedAtomicReference tail;
    scala.concurrent.forkjoin.LinkedTransferQueue$PaddedAtomicReference cleanMe;
}

score 0 · Accepted Answer

似乎想法会在取消选中 Run ProGuard on Android facet 时使用系统 proguard 配置来优化 jar，简单取消选中它似乎不起作用，所以你需要为 proguard 使用一些自定义配置，试试这个，它对我有用，拜托用你的包裹替换 REPLACE WITH YOUR PACKAGE

当然，你可以试试 Keith 的配置。

-dontobfuscate
-dontoptimize
-dontpreverify

-dontskipnonpubliclibraryclasses
-dontskipnonpubliclibraryclassmembers

-dontwarn

#scala.Enumeration accesses a field 'MODULE$' dynamically
-dontnote scala.Enumeration

#(org.xml.sax.EntityResolver)Class.forName(variable).newInstance()
-dontnote org.xml.sax.EntityResolver

#(org.apache.james.mime4j.storage.StorageProvider)Class.forName(variable).newInstance()
-dontnote org.apache.james.mime4j.storage.DefaultStorageProvider

-keepattributes Exceptions,InnerClasses,Signature,Deprecated,
            SourceFile,LineNumberTable,Annotation,EnclosingMethod

-keep public class REPLACE WITH YOUR PACKAGE

https://plus.google.com/106066742926663025812/posts/41XoDPeDEqc

android - 带有 IntelliJ Idea ClassNotFoundException 的 Android 上的 Scala

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