Failed to resolve support-annotations:26.0.2的解决办法

方案一：在app工程的gradle文件下，dependencies{ ****** } 之前添加如下文件

  

  configurations.all {
        resolutionStrategy.force 'com.android.support:support-annotations:26.+'
//DependencyResolveDetails
        resolutionStrategy.eachDependency { DependencyResolveDetails details ->
            def requested = details.requested
            if (requested.group == 'com.android.support') {
                if (!requested.name.startsWith("multidex")) {
                    details.useVersion '26.+'
                }
            }
        }

    }

 

方案二：在项目的Project的build.gradle中maven仓库添里面，下面两个仓库地址，任意添加其中之一也可解决问题：（需要翻墙）

 

 

allprojects {
    repositories {
        ......
        maven { url "https://maven.google.com"}//需要添加的仓库地址
        maven { url "https://dl.google.com/dl/android/maven2/"}//需要添加的仓库地址
    }
}