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参考：

项目报错：

Error:Could not find support-fragment.jar (com.android.support:support-fragment:27.1.1).Searched in the following locations:    https://jcenter.bintray.com/com/android/support/support-fragment/27.1.1/support-fragment-27.1.1.jarPlease install the Android Support Repository from the Android SDK Manager.Open Android SDK Manager

注意：把Google库放在jcenter库前面

buildscript {    repositories {        maven { url "https://maven.google.com" }        jcenter()    }    dependencies {        classpath 'com.android.tools.build:gradle:2.3.3'        // NOTE: Do not place your application dependencies here; they belong        // in the individual module build.gradle files    }}allprojects {    repositories {        maven { url "https://maven.google.com" }        jcenter()        maven { url 'https://jitpack.io' }    }}task clean(type: Delete) {    delete rootProject.buildDir}

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