解决失败:com.android.Support:support:27.2.0

Question

我的App中的依赖项有一个问题：

apply plugin: 'com.android.application'

android {
compileSdkVersion 27
defaultConfig {
    applicationId "fr.android.MyApp"
    minSdkVersion 16
    targetSdkVersion 27
    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(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:25.1.1'
implementation 'com.android.support:animated-vector-drawable:27.1.1'
implementation 'com.android.support:support-compat:27.2.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.0'
implementation 'com.google.firebase:firebase-auth:11.6.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-   core:3.0.2'
}
apply plugin: 'com.google.gms.google-services'

得到错误的行是：

implementation 'com.android.support:animated-vector-drawable:27.1.1'

上面写着:未能解决: com.android.support:animated-vector-drawable:27.1.1

以及：

​

​

我还得到:配置‘编译’已经过时，并已被替换为‘实现’和'api‘。它将在2018年年底被移除。

这是我的build.gradle：

// Top-level build file where you can add configuration options common to all   sub-projects/modules.

buildscript {

repositories {
    google()
    jcenter()
}
dependencies {
    classpath 'com.android.tools.build:gradle:3.1.2'


    // NOTE: Do not place your application dependencies here; they belong
    // in the individual module build.gradle files
    classpath 'com.google.gms:google-services:3.1.1'
      }
   }

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

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

知道怎么解决这个问题吗？提前谢谢。

Answer 1

这是因为您使用了appcompat库的旧版本，即：

implementation 'com.android.support:appcompat-v7:25.1.1'

将它的版本从v7:25.1.1改为27.1.1

示例：

dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support:animated-vector-drawable:27.1.1'
implementation 'com.android.support:support-compat:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.0'
implementation 'com.google.firebase:firebase-auth:11.6.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-   core:3.0.2'
}

更改后同步项目

Answer 2

所有com.android.support必须使用完全相同的版本规范。

animated-vector-drawable:27.1.1在27.1.1版本中使用，support-compat在27.2.0版本中使用。你应该做同样的版本。