com.android.support:support-v4具有不同的编译版本

在你的build.gradle文件中添加这个(android - > build.gradle)

   subprojects {
   project.configurations.all {
       resolutionStrategy.eachDependency { details ->
           if (details.requested.group == 'com.android.support'
                   && !details.requested.name.contains('multidex') ) {
               details.useVersion "26.1.0"
           }
       }
   }
}

它看起来应该是这样的

    buildscript {
    repositories {
        google()
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.4'
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

rootProject.buildDir = '../build'
subprojects {
    project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
    project.evaluationDependsOn(':app')
}

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

subprojects {
    project.configurations.all {
        resolutionStrategy.eachDependency { details ->
            if (details.requested.group == 'com.android.support'
                    && !details.requested.name.contains('multidex') ) {
                details.useVersion "26.1.0"
            }
        }
    }
}