16904
AndroidStudioでエラーが発生してビルドが出来ません。  
原因を調査していますが、助けていただきたいです。

[一ヶ月程前も同じような事がありました。](https://ja.stackoverflow.com/questions/13181/androidstudiogradle%E3%81%A7%E3%83%93%E3%83%AB%E3%83%89%E3%82%A8%E3%83%A9%E3%83%BC-%E9%87%8D%E8%A4%87%E3%82%AF%E3%83%A9%E3%82%B9%E3%81%A7%E3%82%A8%E3%83%A9%E3%83%BC)

OSX 10.10.5  
AndroidStudio 1.3.2  
jdk 1.7.0_79

以下にエラーメッセージを貼ります。

```

    Information:Gradle tasks [:app:assembleDebug]
    :app:preBuild UP-TO-DATE
    :app:preDebugBuild UP-TO-DATE
    :app:checkDebugManifest
    :app:preReleaseBuild UP-TO-DATE
    :app:prepareComAndroidSupportAppcompatV72221Library UP-TO-DATE
    :app:prepareComAndroidSupportMediarouterV72200Library UP-TO-DATE
    :app:prepareComAndroidSupportMultidex101Library UP-TO-DATE
    :app:prepareComAndroidSupportRecyclerviewV72221Library UP-TO-DATE
    :app:prepareComAndroidSupportSupportV132221Library UP-TO-DATE
    :app:prepareComAndroidSupportSupportV42221Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServices750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesAds750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesAnalytics750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesAppindexing750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesAppinvite750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesAppstate750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesBase750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesCast750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesDrive750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesFitness750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesGames750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesGcm750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesIdentity750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesLocation750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesMaps750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesNearby750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesPanorama750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesPlus750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesSafetynet750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesWallet750Library UP-TO-DATE
    :app:prepareComGoogleAndroidGmsPlayServicesWearable750Library UP-TO-DATE
    :app:prepareDebugDependencies
    :app:compileDebugAidl UP-TO-DATE
    :app:compileDebugRenderscript UP-TO-DATE
    :app:generateDebugBuildConfig UP-TO-DATE
    :app:generateDebugAssets UP-TO-DATE
    :app:mergeDebugAssets UP-TO-DATE
    :app:generateDebugResValues UP-TO-DATE
    :app:generateDebugResources UP-TO-DATE
    :app:mergeDebugResources UP-TO-DATE
    :app:processDebugManifest UP-TO-DATE
    :app:processDebugResources UP-TO-DATE
    :app:generateDebugSources UP-TO-DATE
    :app:processDebugJavaRes UP-TO-DATE
    :app:compileDebugKotlin
    Error:/Users/makki/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-runtime/0.13.1514/917102ebeacadbaa633c17d7141ae466a6ca6947/kotlin-runtime-0.13.1514.jar!/kotlin/data.class: (0, 0): Class 'kotlin/data' was compiled with an incompatible version of Kotlin. Its ABI version is 25, expected ABI version is 23
    Error:/Users/makki/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-runtime/0.13.1514/917102ebeacadbaa633c17d7141ae466a6ca6947/kotlin-runtime-0.13.1514.jar!/kotlin/Unit.class: (0, 0): Class 'kotlin/Unit' was compiled with an incompatible version of Kotlin. Its ABI version is 25, expected ABI version is 23
    Error:/Users/makki/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/0.13.1514/9a02485c37501a81fd630978f125395ff24e3dd9/kotlin-stdlib-0.13.1514.jar!/kotlin/properties/Delegates.class: (0, 0): Class 'kotlin/properties/Delegates' was compiled with an incompatible version of Kotlin. Its ABI version is 25, expected ABI version is 23
    Error:/Users/makki/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-runtime/0.13.1514/917102ebeacadbaa633c17d7141ae466a6ca6947/kotlin-runtime-0.13.1514.jar!/kotlin/jvm/functions/Function0.class: (0, 0): Class 'kotlin/jvm/functions/Function0' was compiled with an incompatible version of Kotlin. Its ABI version is 25, expected ABI version is 23
    Error:/Users/makki/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/0.13.1514/9a02485c37501a81fd630978f125395ff24e3dd9/kotlin-stdlib-0.13.1514.jar!/kotlin/properties/ReadOnlyProperty.class: (0, 0): Class 'kotlin/properties/ReadOnlyProperty' was compiled with an incompatible version of Kotlin. Its ABI version is 25, expected ABI version is 23
    Error:/Users/makki/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-runtime/0.13.1514/917102ebeacadbaa633c17d7141ae466a6ca6947/kotlin-runtime-0.13.1514.jar!/kotlin/PropertyMetadata.class: (0, 0): Class 'kotlin/PropertyMetadata' was compiled with an incompatible version of Kotlin. Its ABI version is 25, expected ABI version is 23
    Error:/Users/makki/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-runtime/0.13.1514/917102ebeacadbaa633c17d7141ae466a6ca6947/kotlin-runtime-0.13.1514.jar!/kotlin/PropertyMetadataImpl.class: (0, 0): Class 'kotlin/PropertyMetadataImpl' was compiled with an incompatible version of Kotlin. Its ABI version is 25, expected ABI version is 23
    Error:/Users/makki/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/0.13.1514/9a02485c37501a81fd630978f125395ff24e3dd9/kotlin-stdlib-0.13.1514.jar!/kotlin/properties/ReadWriteProperty.class: (0, 0): Class 'kotlin/properties/ReadWriteProperty' was compiled with an incompatible version of Kotlin. Its ABI version is 25, expected ABI version is 23
    Error:/Users/makki/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-runtime/0.13.1514/917102ebeacadbaa633c17d7141ae466a6ca6947/kotlin-runtime-0.13.1514.jar!/kotlin/Range.class: (0, 0): Class 'kotlin/Range' was compiled with an incompatible version of Kotlin. Its ABI version is 25, expected ABI version is 23
    Error:/Users/makki/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-runtime/0.13.1514/917102ebeacadbaa633c17d7141ae466a6ca6947/kotlin-runtime-0.13.1514.jar!/kotlin/internal/InternalPackage.class: (0, 0): Class 'kotlin/internal/InternalPackage' was compiled with an incompatible version of Kotlin. Its ABI version is 25, expected ABI version is 23
    /Users/makki/gnoccho/app/src/main/kotlin/jp/moriturus/yarn/task/Task.kt
    Error:(5, 26) Unresolved reference: thread
    Error:(12, 5) Unresolved reference: thread
    Error:(24, 5) Unresolved reference: thread
    Error:(38, 5) Unresolved reference: thread
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/activities/MainActivity.kt
    Error:(135, 17) Unresolved reference: println
    Error:(143, 29) Unresolved reference: isNotEmpty
    Error:(145, 21) Unresolved reference: println
    Error:(153, 38) Unresolved reference: isEmpty
    Error:(155, 52) Unresolved reference: arrayOf
    Error:(232, 54) Unresolved reference: javaClass
    Error:(268, 13) Unresolved reference: println
    Error:(284, 73) Unresolved reference: toLong
    Error:(322, 39) Unresolved reference: javaClass
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/activities/SearchResultActivity.kt
    Error:(51, 13) Unresolved reference: println
    Error:(55, 13) Unresolved reference: println
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/activities/UserPageActivity.kt
    Warning:(27, 35) 'Log' is deprecated. Deprecated in Java
    Error:(34, 34) Unresolved reference: arrayListOf
    Error:(37, 20) Unresolved reference: arrayListOf
    Error:(162, 57) Unresolved reference: javaClass
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/activities/WebViewActivity.kt
    Error:(87, 20) Unresolved reference: arrayListOf
    Error:(186, 13) Unresolved reference: println
    Error:(208, 13) Unresolved reference: println
    Error:(219, 43) Unresolved reference: lazy
    Error:(221, 53) Unresolved reference: toRegex
    Error:(237, 17) Unresolved reference: println
    Error:(267, 29) Unresolved reference: println
    Error:(268, 29) Unresolved reference: println
    Error:(274, 76) Unresolved reference: matches
    Error:(275, 29) Unresolved reference: println
    Error:(280, 81) Unresolved reference: toInt
    Error:(317, 25) Unresolved reference: println
    Error:(333, 9) Unresolved reference: println
    Error:(362, 9) Unresolved reference: println
    Error:(371, 13) Unresolved reference: println
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/advertising/AdvertisingIdentifierManager.kt
    Error:(11, 26) Unresolved reference: thread
    Error:(70, 56) Unresolved reference: notNull
    Error:(78, 9) Unresolved reference: thread
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/api/ApiManager.kt
    Error:(71, 30) Unresolved reference: hashMapOf
    Error:(76, 13) Unresolved reference: println
    Error:(87, 13) Unresolved reference: println
    Error:(146, 17) Unresolved reference: println
    Error:(207, 17) Unresolved reference: println
    Error:(223, 25) Unresolved reference: count
    Error:(279, 21) Unresolved reference: println
    Error:(348, 17) Unresolved reference: println
    Error:(378, 32) Cannot access '<init>': it is 'private' in 'Array'
    Error:(378, 32) Type inference failed: Not enough information to infer parameter T in constructor Array<reified T>()
    Please specify it explicitly.
    Error:(378, 38) Too many arguments for private constructor Array<reified T>() defined in kotlin.Array
    Error:(378, 43) Too many arguments for private constructor Array<reified T>() defined in kotlin.Array
    Error:(378, 64) Unresolved reference: it
    Error:(395, 17) Unresolved reference: println
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/application/analytics/TrackingManager.kt
    Error:(28, 28) Unresolved reference: hashMapOf
    Error:(30, 12) Unresolved reference: synchronized
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/application/elevationHolder/DefaultElevationHolder.kt
    Error:(13, 47) Unresolved reference: notNull
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/data/category/FeedCategory.kt
    Error:(71, 30) For-loop range must have an iterator() method
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/data/dataSource/DataSource.kt
    Error:(16, 55) None of the following functions can be called with the arguments supplied:
    public open fun addAll(c: (kotlin.MutableCollection<out T!>..kotlin.Collection<T!>?)): kotlin.Boolean defined in java.util.ArrayList
    public open fun addAll(index: kotlin.Int, c: (kotlin.MutableCollection<out T!>..kotlin.Collection<T!>?)): kotlin.Boolean defined in java.util.ArrayList
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/data/feed/Feed.kt
    Error:(110, 30) For-loop range must have an iterator() method
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/data/feed/user/RealmResultsExtensions.kt
    Error:(16, 20) Unresolved reference: arrayListOf
    Error:(31, 22) Unresolved reference: count
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/data/feed/user/User.kt
    Error:(39, 24) Unresolved reference: javaClass
    Error:(42, 27) Unresolved reference: arrayListOf
    Error:(58, 24) Unresolved reference: javaClass
    Error:(61, 27) Unresolved reference: arrayListOf
    Error:(81, 48) Unresolved reference: javaClass
    Error:(88, 47) Unresolved reference: javaClass
    Error:(106, 48) Unresolved reference: javaClass
    Error:(118, 44) Unresolved reference: javaClass
    Error:(132, 48) Unresolved reference: javaClass
    Error:(139, 47) Unresolved reference: javaClass
    Error:(151, 44) Unresolved reference: javaClass
    Error:(163, 21) Unresolved reference: javaClass
    Error:(164, 21) Unresolved reference: javaClass
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/data/predicate/Predicate.kt
    Error:(23, 16) Unresolved reference: mapOf
    Error:(24, 25) Unresolved reference: to
    Error:(25, 24) Unresolved reference: to
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/feedList/FeedListAdapter.kt
    Error:(70, 21) Unresolved reference: println
    Error:(120, 37) Unresolved reference: count
    Error:(134, 28) Unresolved reference: count
    Error:(136, 31) Unresolved reference: count
    Error:(137, 27) Unresolved reference: count
    Error:(167, 23) Unresolved reference: count
    Error:(290, 32) Unresolved reference: count
    Error:(325, 27) Unresolved reference: count
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/feedList/FeedListDataSource.kt
    Error:(23, 27) Unresolved reference: arrayListOf
    Error:(24, 13) Unresolved reference: arrayListOf
    Error:(25, 13) Unresolved reference: arrayListOf
    Error:(26, 13) Unresolved reference: arrayListOf
    Error:(27, 13) Unresolved reference: arrayListOf
    Error:(28, 13) Unresolved reference: arrayListOf
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/fragment/FeedListFragment.kt
    Error:(31, 49) Unresolved reference: notNull
    Error:(32, 67) Unresolved reference: notNull
    Error:(34, 57) Unresolved reference: notNull
    Error:(35, 60) Unresolved reference: notNull
    Error:(235, 45) Unresolved reference: println
    Error:(248, 44) Unresolved reference: javaClass
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/fragment/FeedListWebFragment.kt
    Error:(41, 16) Unresolved reference: arrayListOf
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/fragment/KeywordListFragment.kt
    Error:(95, 52) Unresolved reference: notNull
    Error:(97, 58) Unresolved reference: notNull
    Error:(123, 44) Unresolved reference: javaClass
    Error:(141, 33) Unresolved reference: toArrayList
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/fragment/MainFragment.kt
    Error:(32, 54) Unresolved reference: arrayListOf
    Error:(73, 45) Unresolved reference: count
    Error:(109, 31) Unresolved reference: count
    Error:(114, 47) Unresolved reference: notNull
    Error:(115, 50) Unresolved reference: notNull
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/fragment/SearchFragment.kt
    Warning:(5, 31) 'ActionBarActivity' is deprecated. Deprecated in Java
    Warning:(20, 41) 'ActionBarActivity' is deprecated. Deprecated in Java
    Error:(34, 53) Unresolved reference: notNull
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/fragment/WebFragment.kt
    Warning:(12, 23) 'CookieSyncManager' is deprecated. Deprecated in Java
    Error:(44, 49) Unresolved reference: notNull
    Error:(45, 62) Unresolved reference: notNull
    Error:(63, 16) Unresolved reference: arrayListOf
    Warning:(161, 13) 'CookieSyncManager' is deprecated. Deprecated in Java
    Warning:(173, 13) 'CookieSyncManager' is deprecated. Deprecated in Java
    Warning:(173, 45) 'startSync(): Unit' is deprecated. Deprecated in Java
    Warning:(184, 13) 'CookieSyncManager' is deprecated. Deprecated in Java
    Warning:(184, 45) 'stopSync(): Unit' is deprecated. Deprecated in Java
    Error:(216, 9) Unresolved reference: println
    Error:(241, 48) Unresolved reference: javaClass
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/view/FeedListCell.kt
    Error:(19, 53) Unresolved reference: notNull
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/view/KeywordCell.kt
    Error:(14, 53) Unresolved reference: notNull
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/web/EventHandlerManager.kt
    Error:(12, 61) Unresolved reference: arrayListOf
    Error:(28, 25) Unresolved reference: all
    Error:(29, 13) Unresolved reference: it
    /Users/makki/gnoccho/app/src/main/kotlin/jp/tttddddgoo/yahoo/app/web/FavorEventHandler.kt
    Error:(31, 58) Unresolved reference: toInt
    :app:compileDebugKotlin FAILED
    Error:Execution failed for task ':app:compileDebugKotlin'.
    > Compilation error. See log for more details
    Information:BUILD FAILED
    Information:Total time: 17.458 secs
    Information:127 errors
    Information:9 warnings
    Information:See complete output in console
    
```

ーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーー  
追記9/25 まだ解決していませんが、「build.gradle」のソースを貼っておきます。

```

    buildscript {
        ext.kotlin_version = '0.12.412'
    
        repositories {
    
            jcenter()
            mavenCentral()
    
        }
    
        dependencies {
    
            classpath 'com.android.tools.build:gradle:1.2.3'
            classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
            classpath "org.jetbrains.kotlin:kotlin-android-extensions:$kotlin_version"
    
        }
    }
    
    apply plugin: "com.android.application"
    apply plugin: 'kotlin-android'
    
    repositories {
    
        jcenter()
        mavenCentral()
    
    }
    
    android {
    
        compileSdkVersion 22
        buildToolsVersion "22.0.1"
    
        defaultConfig {
    
            applicationId "jp.tttddddgoo.yahoo.app"
            minSdkVersion 16
            targetSdkVersion 22
            versionCode 10
            versionName "1.6"
    
            //メソッド数が65535を超える対策2015/08/11
            multiDexEnabled true
    
        }
    
        compileOptions {
    
            sourceCompatibility JavaVersion.VERSION_1_7
            targetCompatibility JavaVersion.VERSION_1_7
    
        }
    
        buildTypes {
    
            release {
    
                minifyEnabled true
                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    
            }
    
        }
    
        sourceSets {
    
            main.java.srcDirs += 'src/main/kotlin'
    
        }
    }
    
    dependencies {
        compile "org.jetbrains.kotlin:kotlin-stdlib:+"
    
        compile 'com.android.support:support-v13:+'
        compile 'com.android.support:appcompat-v7:+'
        compile 'com.android.support:recyclerview-v7:+'
    
        //メソッド数が65535を超える原因
        compile 'com.google.android.gms:play-services:+'
        //メソッド数が65535を超える対策2015/08/11
        compile 'com.android.support:multidex:1.0.0'
    
    
        compile 'com.parse.bolts:bolts-android:+'
    
        compile fileTree(dir: 'libs', include: ['*.jar'])
    
        // volley
        compile 'com.mcxiaoke.volley:library:+'
    
        // realm
        compile 'io.realm:realm-android:+'
    
        // adjust
        //compile 'com.adjust.sdk:adjust-android:+'
    
    }
    
```
CC BY-SA 3.0
2015-09-24T08:28:21.090
16897
2015-09-25T05:01:06.817
2017-04-13T12:52:39.113
-1
10715
question
android java android-studio gradle kotlin
AndroidStudioでビルドエラー
```

    dependencies {
        ...
        compile "org.jetbrains.kotlin:kotlin-stdlib:+"
        ...
    }
    
```

ここを、具体的なバージョン番号（[Kotlin Stdlib
のバージョンの一覧](http://mvnrepository.com/artifact/org.jetbrains.kotlin/kotlin-
stdlib)）を指定して、例えば、

```

    compile "org.jetbrains.kotlin:kotlin-stdlib:0.12.1230"
    
```

としてみたらどうですか？（最新のものから、一つ一つ遡って試して、問題が出ないものを見つけてみてください）

私自身は Kotlin を使っていないので、Kotlin 自体の具体的な話はわかりませんが、Android Studio と Gradle
の使用上の一般的な問題として、 **`+` によるバージョン指定は避ける**というのが、tip のようです。

`+` 指定すると、自動で最新バージョンに更新するため、簡単に、モジュール間のバージョンに不整合が発生し得るからです。

特に、Kotlin は、1) 開発中の非常にマイナーな言語であること、2)
開発者（JetBrain）が、[正式版（1.0）までは、後方互換は顧みないで開発を進めると明言している](https://devnet.jetbrains.com/message/5519129)点など、+
指定にはかなりリスクが伴うと言えるでしょう。

これで、生じている問題が解消されるかどうかはわかりませんが、気付いた点は以上です。
CC BY-SA 3.0
2015-09-24T13:33:14.760
16904
2015-09-24T16:50:25.533
2015-09-24T16:50:25.533
7290
7290
16897
answer
> Class '...' was compiled with an incompatible version of Kotlin. Its ABI
> version is 25, expected ABI version is 23

というエラーメッセージが出ていますが、これの意味するところは、コンパイル時にバージョン23のABI([Wikipedia解説](https://ja.wikipedia.org/wiki/Application_Binary_Interface))を使用していたが、今使用しようとしているABIのバージョンがそれより新しい25であるため互換性がなく処理できない、ということです。

まず、問題が発生した場合の対処法ですが、大抵の場合はクリーンビルドを行えば解決するはずです。  
Android Studioでは、  
Build > Rebuild Project  
メニューを選択することになります。

次に、この問題が発生した原因ですが、バージョン指定を'+'としているため最新バージョンが参照される(互換性のない変更も自動で取り込まれてしまう)からです。

これを防ぐためには@hataさん記載の通り明示的にバージョンを指定する必要があります。

あと、これは今回の問題とは直接関係ないと思いますが…  
[前回の質問文](https://ja.stackoverflow.com/q/13181/2808)中の記述を見ると、  
`kotlin-gradle-plugin`(及び`kotlin-android-
extensions`)のバージョンは`$kotlin_version`と指定しているのに対し、`kotlin-
stdlib`のバージョンは`+`とされています。  
[公式サイトの説明](http://kotlinlang.org/docs/tutorials/kotlin-
android.html)を見る限り、これらのバージョンは合わせておくのが妥当だと考えられますので、この点でも、`kotlin-
stdlib`のバージョン指定は`$kotlin_version`に変更しておいたほうが良いと思います。  
すなわち、

```

    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
    
```

としておきましょう、ということですね。

(他にも`+`指定しているものがありますが、同じような問題が発生する可能性はありますので、明示的バージョン指定に書き換えることも検討してみてください。)
CC BY-SA 3.0
2015-09-25T05:01:06.817
16914
2015-09-25T05:01:06.817
2017-04-13T12:52:38.920
-1
2808
16897
answer