相关疑难解决方法(0)

我尝试将recyclerview添加到我的项目并出现此错误,我从android studio依赖项添加它

我在Android studio中遇到此问题.

Error:(22, 13) Failed to resolve: com.android.support:appcompat-v7:26.0.0
<a href="install.m2.repo">Install Repository and sync project</a><br><a href="openFile:C:/Users/username/AndroidStudioProjects/ElectroSave/app/build.gradle">Show in File</a><br><a href="open.dependency.in.project.structure">Show in Project Structure dialog</a>

这是我的Gradle代码:

apply plugin: 'com.android.application'

android {
       compileSdkVersion 26
      buildToolsVersion "25.0.2"
    defaultConfig {
    applicationId "com.example.noelly.myapplication"
    minSdkVersion 19
    targetSdkVersion 25
    versionCode 1
    versionName "1.0"
}
   buildTypes {
      release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 
'proguard-rules.pro'




 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     compile 'com.android.support:appcompat-v7:26.0.0'
}

我想在Android项目中为Android FirebaseUI - Auth编写代码,但是从最近两天开始,我在当前代码中遇到错误,不知道如何修复它.努力但却没有以正确的方式发生.

这是我的build.gradle(项目:FriendlyChat)

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

buildscript {
    repositories {
        jcenter()
        mavenLocal()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.2.2'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
        classpath 'com.google.gms:google-services:3.0.0'
    }
}

allprojects {
    repositories {
        jcenter()
        mavenLocal()
    }
}

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

这是我的build.gradle(模块:app)

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

repositories {
    mavenLocal()
    flatDir {
        dirs …