在android studio中实现Firebase管理sdk时出错

当我实现firebase管理库时 它显示了我在下面的应用程序和项目级渐变文件之后提到的错误

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

android {
    compileSdkVersion 29
    buildToolsVersion "29.0.3"

    configurations {
        all*.exclude module: 'support-v4' // This removes all other versions of `support-v4` if gets duplicated from all the artifacts.
    }

    defaultConfig {
        applicationId "com.example.trolificnss"
        minSdkVersion 16
        targetSdkVersion 29
        versionCode 1
        versionName "1.0"
        multiDexEnabled true

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}
dependencies {

    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "com.firebaseui:firebase-ui-auth:6.2.0"
    implementation 'com.google.firebase:firebase-auth:19.2.0'

    implementation 'com.google.firebase:firebase-admin:6.12.2'

    implementation 'com.google.firebase:firebase-analytics:17.2.3'
    implementation 'com.google.firebase:firebase-firestore:21.4.1'
    implementation 'com.firebaseui:firebase-ui-database:6.2.0'
    implementation 'com.firebaseui:firebase-ui-storage:6.2.0'
    implementation "com.google.firebase:firebase-firestore:21.4.1"
    implementation "com.firebaseui:firebase-ui-firestore:6.2.0"
    implementation 'com.firebaseui:firebase-ui-database:6.2.0'
    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    implementation 'com.firebaseui:firebase-ui-firestore:6.2.0'
    implementation 'com.google.firebase:firebase-storage:19.1.1'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
    implementation 'androidx.cardview:cardview:1.0.0'
    implementation 'com.android.support:multidex:1.0.3'
    implementation 'com.firebaseui:firebase-ui-auth:6.2.0'
    implementation 'net.schmizz:sshj:0.10.0'
}

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

buildscript {


    repositories {
        google()
        jcenter()
        maven {
            url 'https://maven.google.com/'
            name 'Google'
        }

    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.6.1'
        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
}

下面是错误消息

在项目“app”中，已解决Google Play services库依赖关系 依赖于另一个精确版本（例如“[1.21.0]”，但不是 正在解析为该版本。库显示的行为将 不知道

删除此项：

implementation 'com.google.firebase:firebase-admin:6.12.2'

您无法在Android应用程序中有效地使用Firebase Admin SDK。它仅适用于在后端服务器和桌面计算机上运行的代码

---

此外，您应该始终确保您的Android客户端库依赖项处于中显示的当前版本。您的Firebase UI库版本还应该与其他Firebase库匹配。

那么，我应该使用什么来调用其他用户的电子邮件呢？我不知道您在问什么。如果您需要使用Admin SDK进行某些操作，您可以应该从客户端可以调用的后端执行此操作。我如何执行此操作？请您帮助我好吗？

implementation 'com.google.firebase:firebase-admin:6.12.2'