无法解决gradle的外部依赖关系

本文介绍了无法解决gradle的外部依赖关系的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我已经浏览了许多与类似问题有关的问题，但找不到有效的解决方案.这可能是我对Android开发的经验不足，但我认为错误消息并不十分清楚.我尝试过:

I have looked through many of the issues regarding similar problems but i could not find a solution that works. It might be my inexperience with android development but i don't think that the error message is all that clear. I have tried:

• 重建/清理项目，
• 使缓存无效/重新启动，同步
• 带有gradle文件的项目，
• 我在设置中使用默认的gradle包装器，

关于解决该问题的任何想法?

Any ideas on what to do to solve this one?

使用Android Studio版本:3.4.1

Using Android Studio version: 3.4.1

应用程序:Build.gradle

App: Build.gradle

apply plugin: 'com.android.application' apply plugin: 'kotlin-android' apply plugin: 'kotlin-android-extensions' android { compileSdkVersion 28 defaultConfig { applicationId "com.app.jokr.dogpark" minSdkVersion 23 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 'com.squareup.picasso:picasso:2.71828' implementation 'com.google.firebase:firebase-storage:17.0.0' implementation 'com.google.firebase:firebase-core:16.0.9' implementation 'com.google.firebase:firebase-firestore:19.0.0' implementation fileTree(dir: 'libs', include: ['*.jar']) implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" implementation 'com.android.support:appcompat-v7:28.0.0' implementation 'com.android.support.constraint:constraint-layout:2.0.0-beta1' testImplementation 'junit:junit:4.13-beta-3' androidTestImplementation 'com.android.support.test:runner:1.0.2' androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' implementation 'com.android.support:recyclerview-v7:28.0.0' implementation 'com.android.support:design:28.0.0' implementation 'com.android.support:cardview-v7:28.0.0' } buildscript { ext { var = '3.3.2' } dependencies { classpath 'com.android.tools.build:gradle' } } apply plugin: 'com.google.gms.google-services'

项目:Build.gradle

Project: Build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules. buildscript { ext.kotlin_version = '1.3.31' repositories { google() jcenter() } dependencies { classpath 'com.google.gms:google-services:4.2.0' classpath 'com.android.tools.build:gradle:3.4.1' classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" // 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 }

gradle-wrapper.properties:

gradle-wrapper.properties:

#Mon May 20 12:04:18 CEST 2019 distributionBase=GRADLE_USER_HOME distributionPath=wrapper/dists zipStoreBase=GRADLE_USER_HOME zipStorePath=wrapper/dists distributionUrl=https\://services.gradle/distributions/gradle-5.1.1-all.zip

构建失败并返回:

Cannot resolve external dependency com.android.tools.build:gradle because no repositories are defined.

推荐答案

删除此无意义的部分:

buildscript { ext { var = '3.3.2' } dependencies { classpath 'com.android.tools.build:gradle' } }