Question

我最近更新了android studio到3.1.2版本和kotlin插件到2.41并且下载了android支持库。

从那以后我一直无法创建新项目。当我尝试同步gradle时，我得到了这些：

-Failed to resolve: constraint-layout  
-Failed to resolve: constraint-layout-solver  
-Failed to resolve: viewmodel  
-Failed to resolve: runtime  
-Failed to resolve: livedata-core  
-Failed to resolve: common

我感觉问题可能无法从maven下载，所以我尝试添加如下行： maven{url "https://maven.google.com"}
但没有运气。然后我改变了我的模块中的实现：来自

的app gradle文件

 `implementation 'com.android.support.constraint:constraint-layout:1.1`

到

`implementation 'com.android.support.constraint:constraint-layout:1.0.2'`

（这是我的sdk经理中提到的下载版本）

导致此错误：

-Could not find viewmodel.aar (android.arch.lifecycle:viewmodel:1.1.0).
Searched in the following locations:
https://dl.google.com/dl/android/maven2/android/arch/lifecycle/viewmodel/1.1.0/viewmodel-1.1.0.aar

这很有趣，因为当我点击上面的链接时，会下载viewmodel-1.1.0.aar！

如何成功同步gradle？

这是app gradle：

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

android {
    compileSdkVersion 'android-P'
    defaultConfig {
        applicationId "com.example.mohamad.arkotlin"
        minSdkVersion 'P'
        targetSdkVersion 'P'
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation"org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
    implementation 'com.android.support:appcompat-v7:28.0.0-alpha1'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    implementation 'com.android.support:design:28.0.0-alpha1'
    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'
}

和项目gradle：

buildscript {
    ext.kotlin_version = '1.2.41'
    repositories {
        google()
        jcenter()
        mavenCentral()
        maven {
            url "https://maven.google.com"
        }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.2'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
        mavenCentral()
        maven {
            url "https://maven.google.com"
        }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

Android Studio新项目gradle sync失败

0 个答案: