添加Firebase连接时，为什么在实现'com.android.support:appcompat-v7:28.0.0'时出现错误？

Question

当我修改build.gradle文件以使用Firebase插件时，它显示了实现'com.android.support:appcompat-v7:28.0.0'的错误

我已经将google-services.json文件添加到了Android应用模块的根目录中。

我的错误：问题ID = Gradle兼容

所有com.android.support库都必须具有完全相同的版本规范...找到的版本28.0.0,26.1.0。 示例包括com.android.support:animated-vector-drawable:28.0.0和com.android.support:support-media-compat:26.1.0

我试图将其注释掉：

//noinspection GradleCompatible

implementation 'com.android.support:appcompat-v7:28.0.0'

但它也无法正常工作，无法与Firebase服务器通信

apply plugin: 'com.android.application'

android {
compileSdkVersion 28

defaultConfig {
    applicationId "com.example.android.tinder"
    minSdkVersion 15
    targetSdkVersion 28
    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-v7:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
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'
implementation 'com.lorentzos.swipecards:library:1.0.9'
implementation 'com.google.firebase:firebase-core:16.0.6'
implementation 'com.google.firebase:firebase-database:16.0.5'
implementation 'com.google.firebase:firebase-auth:16.1.0'
}
apply plugin: 'com.google.gms.google-services'

我的build.gradle代码（项目）

// 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:3.2.1'
    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
 }

我只是希望能够将Firebase连接到我的android应用

Answer 1

解决方案是：

implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
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'
implementation 'com.android.support:design:28.0.0'

implementation 'com.android.support:support-media-compat:28.0.0' // NEED TO ADD
implementation 'com.android.support:support-v4:28.0.0' //NEED TO ADD

implementation 'com.google.firebase:firebase-storage:16.0.5'

Answer 2

我通过更改Fire-base和classpath依赖项的版本解决了我的问题。

最新版本的依赖项与应用程序级别build.gradle implementation 'com.android.support:appcompat-v7:28.0.0'冲突。

我的更改如下

• 在应用程序级别build.gradle文件implementation 'com.google.firebase:firebase-core:16.0.8' implementation 'com.google.firebase:firebase-core:17.0.1' implementation 'com.google.firebase:firebase-core:16.0.8' 。

• 项目级build.gradle文件中的classpath 'com.google.gms:google-services:4.3.0'到classpath 'com.google.gms:google-services:4.2.0' 。

*如果将项目迁移到AndroidX，那么您将能够使用所有最新的依赖项而不会遇到此类错误*