java - 无法解析 : com. android.volley :volley:1. 0.0

Question

当我将以下行添加到依赖项的 build.gradle 行时，Android Studio 显示此错误消息:compile 'com.android.volley:volley:1.0.0'

apply plugin: 'com.android.application'

    android {
        compileSdkVersion rootProject.ext.compileSdkVersion
        buildToolsVersion rootProject.ext.buildToolsVersion

        defaultConfig {
            applicationId "com.parse.starter"
            minSdkVersion rootProject.ext.minSdkVersion
            targetSdkVersion rootProject.ext.targetSdkVersion
            versionCode 1
            versionName "1.0"
        }
        buildTypes {
            release {
                minifyEnabled false
                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            }
        }
    }

    dependencies {
        compile 'com.android.support:appcompat-v7:22.2.0'

        compile 'com.parse.bolts:bolts-tasks:1.3.0'
        compile 'com.parse:parse-android:1.13.0'
        compile 'com.android.support.constraint:constraint-layout:1.0.0-beta4'
        compile 'com.google.code.gson:gson:2.8.0'
        compile 'org.jetbrains:annotations-java5:15.0'
        compile 'com.android.volley:volley:1.0.0'
    }

Answer 1

查看项目 gradle 的存储库中是否有 jcenter()。

例如:

allprojects {
    repositories {
        jcenter()

        maven {

        }

        ivy {

        }
    }
}