Gradle in Android Studio: Failed to resolve third-

问题:

I have been trying to switch my project from Intellij to Android Studio, which has required me to create a build.gradle file. I know I can add each of these as a library dependency, but I ideally want to be able to get the maven repository dependency working.

Every time I sync, my support libraries are synced fine, but for each third-party library, I get something like

"Error:(30, 13) Failed to resolve: com.facebook.android:facebook-android-sdk:3.23.1"

for each library.

buildscript {
repositories {
    mavenCentral()
}
dependencies {
    classpath 'com.android.tools.build:gradle:1.1.0'
}
}
apply plugin: 'com.android.application'

dependencies {

compile fileTree(dir: 'libs', include: '*.jar')

// Google Play Services
compile 'com.google.android.gms:play-services:6.5.87'

// Support Libraries
compile 'com.android.support:appcompat-v7:22.0.0'
compile 'com.android.support:cardview-v7:21.0.3'
compile 'com.android.support:gridlayout-v7:21.0.3'
compile 'com.android.support:mediarouter-v7:21.0.3'
compile 'com.android.support:palette-v7:21.0.3'
compile 'com.android.support:recyclerview-v7:21.0.3'
compile 'com.android.support:support-annotations:21.0.3'
compile 'com.android.support:support-v13:21.0.3'
compile 'com.android.support:support-v4:22.0.0'

// third-party libraries
compile 'com.amazonaws:aws-java-sdk:1.9.24'
compile 'com.facebook.android:facebook-android-sdk:3.23.1'
compile 'com.github.markushi:android-ui:1.2'
compile 'de.hdodenhof:circleimageview:1.2.2'
compile 'it.neokree:MaterialNavigationDrawer:1.3.2'

}

android {
compileSdkVersion 21
buildToolsVersion "21.1.2"

sourceSets {
    main {
        manifest.srcFile 'AndroidManifest.xml'
        java.srcDirs = ['src']
        resources.srcDirs = ['src']
        aidl.srcDirs = ['src']
        renderscript.srcDirs = ['src']
        res.srcDirs = ['res']
        assets.srcDirs = ['assets']
    }

    // Move the tests to tests/java, tests/res, etc...
    instrumentTest.setRoot('tests')

    // Move the build types to build-types/<type>
    // For instance, build-types/debug/java, build-types/debug/AndroidManifest.xml, ...
    // This moves them out of them default location under src/<type>/... which would
    // conflict with src/ being used by the main source set.
    // Adding new build types or product flavors should be accompanied
    // by a similar customization.
    debug.setRoot('build-types/debug')
    release.setRoot('build-types/release')
}
}

回答1:

Add:

repositories {
   mavenCentral()
}

to the build.gradle. Now you have repositories defined only in build script which resolves dependencies only for the buildscript itself not for the project.

回答2:

Just to share infomation, I got same problem and the solution was different.

In my case, proxy server was used and it causes the problem. I needed to configure https proxy settings, as discussed in gradle behind proxy in Android Studio 1.3.

回答3:

If you use VPN | Proxy on your system then use your proxy info in the gradle.properties file in your project like the following lines of code:

# HTTP Proxy
systemProp.http.proxyHost={Host Address}
systemProp.http.proxyPort={Port Number}
systemProp.http.proxyUser={Proxy Username}
systemProp.http.proxyPassword={Proxy Password}
systemProp.http.nonProxyHosts={NonProxy Hosts Address} # like: 127.0.0.1,localhost

# HTTPS Proxy
systemProp.https.proxyHost={Host Address}
systemProp.https.proxyPort={Port Number}
systemProp.https.proxyUser={Proxy Username}
systemProp.https.proxyPassword={Proxy Password}
systemProp.https.nonProxyHosts={NonProxy Hosts Address} # like: 127.0.0.1,localhost

Now just replace {.....} in the above code with appropriate data

---

Also you can set Android studio proxies like the following image by your proxy info in File>Settings:

Now test again...!

回答4:

Maybe this help

allprojects {
    repositories {
        jcenter()
    }
}

回答5:

repositories {
jcenter {
    url "http://jcenter.bintray.com/"
}

// mavenCentral() }

回答6:

well , if your network connection is fine(wheter using proxy | VPNs or not), simply just try turn off'offline mode' and sync when using android studio with gradle 2.3,this worked for me :)

回答7:

this helps

allprojects {
    repositories {
        jcenter()
        maven { url "https://jitpack.io" }
    }
}

in projects's gradle