程序类型已经存在滑行

Question

我正在尝试使用Glide从Firebase加载图片。当我尝试实现Glide时，我开始遇到错误。在gradle sync期间，一切都很好。但是，当我清理并重建程序时，它将显示以下错误。

`Program type already present: com.bumptech.glide.gifdecoder.GifDecoder$BitmapProvider Message{kind=ERROR, text=Program type already present: com.bumptech.glide.gifdecoder.GifDecoder$BitmapProvider, sources=[Unknown source file], tool name=Optional.of(D8)}`

我正在使用sdk 26，因为我在使用sdk 27​​时遇到了运行时错误。我已确保所有依赖项都不会覆盖sdk 27​​。

gradle产出：项目

buildscript {

repositories {
    google()
    jcenter()
    maven
            {
                url "https://maven.google.com"
            }
}
dependencies {
    classpath 'com.android.tools.build:gradle:3.1.0'
    classpath 'com.google.gms:google-services:4.2.0'

    // NOTE: Do not place your application dependencies here; they belong
    // in the individual module build.gradle files
}
}

allprojects {
repositories {
    google()
    jcenter()
}
}

task clean(type: Delete) {
delete rootProject.buildDir
}

gradle：app

apply plugin: 'com.android.application'

android {
compileSdkVersion 26
defaultConfig {
    applicationId "com.example.user.uploadimage7"
    minSdkVersion 21
    targetSdkVersion 26
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner 
"android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 
'proguard-rules.pro'
    }
}
}

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.google.firebase:firebase-core:16.0.1'
implementation 'com.google.firebase:firebase-storage:16.0.1'
implementation 'com.google.firebase:firebase-auth:16.0.1'
implementation 'com.firebaseui:firebase-ui-storage:3.1.0'
implementation 'com.android.support:support-fragment:26.1.0'
implementation 'com.android.support:design:26.1.0'
implementation 'com.github.bumptech.glide:glide:4.3.1'
annotationProcessor 'com.github.bumptech.glide:compiler:4.3.1'
//implementation 'jp.wasabeef:glide-transformations:3.0.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}

apply plugin: 'com.google.gms.google-services'

我试过“排除组：”com.android.support“但它不起作用

Answer 1

通过删除libs文件夹中的重复.jar来解决该错误

Answer 2

我建议您将SDK更新到版本27并进行以下更改。首先，将您的gradle更新为最新版本3.2.1：

classpath 'com.android.tools.build:gradle:3.2.1'

现在更改以下代码行：

implementation 'com.google.firebase:firebase-core:16.0.1'
implementation 'com.google.firebase:firebase-storage:16.0.1'
implementation 'com.google.firebase:firebase-auth:16.0.1'
implementation 'com.firebaseui:firebase-ui-storage:3.1.0'

至

implementation 'com.google.firebase:firebase-core:16.0.5'
implementation 'com.google.firebase:firebase-storage:16.0.5'
implementation 'com.google.firebase:firebase-auth:16.0.5'
implementation 'com.firebaseui:firebase-ui-storage:4.2.1'

对于Glide，请更改此行：

implementation "com.github.bumptech.glide:glide:4.3.1"

至

implementation "com.github.bumptech.glide:glide:4.7.1"

Answer 3

将Glide从3升级到4后得到相同的构建错误。解决方法：

1. 退出Android Studio
2. 删除所有构建文件夹
3. 在Android Studio中再次打开项目
4. 建立它
5. 构建成功