dl.google.com:443 failed to respond

Question

Getting error

Cause: dl.google.com:443 failed to respond

Below is the build.gradle file code

buildscript {

repositories {
    google()
    jcenter()
}
dependencies {
    classpath 'com.android.tools.build:gradle:3.1.2'
    // 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}

and

dependencies { implementation fileTree(dir: 'libs', include: ['*.jar']) implementation 'com.android.support:appcompat-v7:27.1.1' implementation 'com.android.support.constraint:constraint-layout:1.1.0' testImplementation 'junit:junit:4.12' androidTestImplementation 'com.android.support.test:runner:1.0.2' androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' }

Answer 1

edit [user]/.gradle/gradle.properties file, config proxy, like this

#systemProp.https.proxyHost=127.0.0.1
#systemProp.https.proxyPort=1080

Answer 2

Please try

dependencies {
    classpath 'com.android.tools.build:gradle:3.1.2'
    classpath 'com.google.gms:google-services:3.1.0' }

in your gradle. hope it will help you.

Answer 3

I am an android developer from China, I met the same problem as you. This problem is mostly because I am behind a proxy. So there are two steps that may help you.

1. File->Settings->Appearance&Behavior -> System Settings -> HTTP Proxy

   Then select No proxy option

2. Locate gradle.properties file in .gradle directory (this directory is generally in The User directory) and edit it. Delete every line about HTTP Proxy. Mine is like this

   systemProp.https.proxyPort=1080
   systemProp.http.proxyHost=127.0.0.1
   systemProp.https.proxyHost=127.0.0.1
   systemProp.http.proxyPort=1080