Question

我正在尝试在我的应用程序中使用GCM服务，但在Gradle中添加依赖项后出现此错误。这是错误请修改版本冲突，方法是更新google-services插件的版本（有关https://bintray.com/android/android-tools/com.google.gms.google-services/的最新版本的信息）或将com.google.android.gms的版本更新为9.0.0。

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

android {
compileSdkVersion 26
defaultConfig {
    applicationId "com.example.jimmy.chatapp"
    minSdkVersion 19
    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:12.0.1' 
implementation 'com.android.support:design:26.+'
implementation 'com.android.support:support-vector-drawable:26.+'
implementation 'com.android.support:support-v4:26.+'
implementation 'com.mcxiaoke.volley:library:1.0.19'
implementation "com.google.android.gms:play-services-gcm:15.0.0"


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'

}

Project 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'

    classpath 'com.google.gms:google-services:3.1.0'


    // 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
}

请提前帮助谢谢

Answer 1

您模块的build.gradle文件的这两行使用了冲突的库版本：

implementation 'com.google.firebase:firebase-core:12.0.1'
implementation "com.google.android.gms:play-services-gcm:15.0.0"

他们需要使用相同的版本号（12.0.1或15.0.0）。为了便于在仿真器上进行测试，除非您绝对需要最新的库版本，否则我建议使用12.0.1。

编辑：

此外，在您的项目build.gradle文件中，更新到最新的Google服务插件：

classpath 'com.google.gms:google-services:3.2.0'

请修复版本冲突错误

1 个答案: