java - 程序类型已存在错误

Question

虽然存在许多类似的问题，但我检查了所有的答案，但没有一个对我有用!

这是我在编译代码时遇到的错误:

Program type already present: android.support.v4.app.BackStackRecord$Op
Message{kind=ERROR, text=Program type already present: android.support.v4.app.BackStackRecord$Op, sources=[Unknown source file], tool name=Optional.of(D8)}

这是我的 gradle 文件:

apply plugin: 'com.android.application'

android {
   compileSdkVersion 27
   defaultConfig {
       applicationId "com.narsun.grocery"
       minSdkVersion 21
       targetSdkVersion 27
       versionCode 1
       versionName "1.0"
       multiDexEnabled true
       testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
   }
   buildTypes {
       release {
           minifyEnabled false
           proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
       }
   }
   packagingOptions {

       exclude 'META-INF/DEPENDENCIES.txt'
       exclude 'META-INF/LICENSE.txt'
       exclude 'META-INF/NOTICE.txt'
       exclude 'META-INF/NOTICE'
       exclude 'META-INF/LICENSE'
       exclude 'META-INF/DEPENDENCIES'
       exclude 'META-INF/notice.txt'
       exclude 'META-INF/license.txt'
       exclude 'META-INF/dependencies.txt'
       exclude 'META-INF/LGPL2.1'

   }
}

dependencies {
   implementation fileTree(dir: 'libs', include: ['*.jar'])
   androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
       exclude group: 'com.android.support', module: 'support-annotations'

   })
   implementation 'com.android.support:appcompat-v7:27.1.0'
   implementation 'com.android.support:cardview-v7:27.1.0'
   implementation 'com.android.support:design:27.1.0'
   implementation 'com.android.support.constraint:constraint-layout:1.0.2'

   implementation 'com.github.sd6352051.niftydialogeffects:niftydialogeffects:1.0.0@aar'
   implementation 'com.squareup.picasso:picasso:2.5.2'
   implementation 'com.squareup:android-times-square:1.6.5@aar'
   implementation 'com.daimajia.slider:library:1.1.5@aar'
   implementation 'com.astuetz:pagerslidingtabstrip:1.0.1'
   implementation 'de.hdodenhof:circleimageview:2.2.0'
   implementation 'com.github.myinnos:AwesomeImagePicker:1.0.2'
   implementation 'com.github.ratty3697:android-smart-animation-library:1.6'
   implementation 'com.github.zcweng:switch-button:0.0.3@aar'
   implementation 'com.github.JakeWharton:ViewPagerIndicator:2.4.1'
   implementation 'com.google.android.exoplayer:exoplayer:2.6.1'
   implementation 'pl.droidsonroids.gif:android-gif-drawable:1.2.10'
   implementation 'com.android.support:multidex:1.0.3'

   testImplementation 'junit:junit:4.12'

}

您可以告诉我是否还有其他要补充的内容以了解我在做什么或我哪里错了。

Answer 1

以防有人遇到类似问题。就我而言，这是因为我在 libs 文件夹中包含了一个 appcompat JAR 文件，并且在我的 gradle 文件中实现了“com.android.support:appcompat-v7:26.0.0”。

当我删除 JAR 文件时，问题就解决了。