android {
    compileSdkVersion 25
    buildToolsVersion "25.0.2"
    
 
defaultConfig {
        applicationId "com.example.administrator.hlfconnect"
        minSdkVersion 15
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

configurations.all {
    resolutionStrategy.eachDependency { DependencyResolveDetails details ->
        def 
 
requested = details.requested
        if (requested.group == 'com.android.support') {
            if (!requested.name.startsWith("multidex")) {
                details.useVersion '25.3.0'
            }
        }
    }
}

就ok了

有問題上stackoverflow找你遇到的問題，如果是火狐或chrome瀏覽器安個劃詞翻譯外掛，英文就能看懂了