Failed to resolve: com.android.support:appcompat-v7:27.+ 解决方法

喜欢ヅ旅行 2022-05-26 03:59 115阅读 0赞

新创建一个android studio project.出现了[Failed to resolve: com.android.support:appcompat-v7:27.+][Failed to resolve_ com.android.support_appcompat-v7_27.]问题。

我的工作环境是 android studio 2.3.3。

app 下的 build.gradle文件内容如下：

apply plugin: 'com.android.application'
    
    android {
        compileSdkVersion 27
        buildToolsVersion "27.0.3"
        defaultConfig {
            applicationId "com.bestgo.facebookdownload"
            minSdkVersion 15
            targetSdkVersion 27
            versionCode 1
            versionName "1.0"
            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        }
        buildTypes {
            release {
                minifyEnabled false
                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            }
        }
    }
    
    dependencies {
        compile fileTree(dir: 'libs', include: ['*.jar'])
        androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
            exclude group: 'com.android.support', module: 'support-annotations'
        })
        compile 'com.android.support:appcompat-v7:27.0.0'
        compile 'com.android.support.constraint:constraint-layout:1.0.2'
        testCompile 'junit:junit:4.12'
    }

project下的build.gradle文件内容如下：

// Top-level build file where you can add configuration options common to all sub-projects/modules.
    
    buildscript {
        repositories {
            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 {
            jcenter()
        }
    }
    
    task clean(type: Delete) {
        delete rootProject.buildDir
    }

**解决方法：**

在project 下的build.gradle 文件里的 allprojects加入以下代码：

maven \{  
url "https://maven.google.com"

加入后的build.gradle文件如下：

// Top-level build file where you can add configuration options common to all sub-projects/modules.
    
    buildscript {
        repositories {
            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 {
            jcenter()
            maven {
                url "https://maven.google.com"
            }
        }
    }
    
    task clean(type: Delete) {
        delete rootProject.buildDir
    }

[Failed to resolve_ com.android.support_appcompat-v7_27.]: https://blog.csdn.net/u013247765/article/details/78518109