文件 com.android.support.constraint:constraint-layout:1.0.0-alpha2

Question

我对Android不是很熟悉，但是我朋友的一个朋友说他在他的电脑上为我的网站制作了一个应用程序。所以他把源文件发给我，我试着重建应用程序，但没有成功。我什至尝试在我的电脑上创建一个新项目和 copy/paste 每个页面的代码。然后只需更改项目名称，但问题与下面相同，我无法再次联系他，因为他已经为我做了这件事。所以我希望这里有人可以帮助我解决这个问题，因为我真的厌倦了尝试解决这个问题。

错误信息是：

Maven package paths must start with m2repository
com.intellij.openapi.diagnostic.Logger$EmptyThrowable
    at com.intellij.openapi.diagnostic.Logger.error(Logger.java:117)
    at com.android.tools.idea.sdk.wizard.InstallSelectedPackagesStep$CustomLogger.logError(InstallSelectedPackagesStep.java:403)
    at com.android.sdklib.repositoryv2.MavenInstaller.install(MavenInstaller.java:102)
    at com.android.tools.idea.sdk.wizard.InstallSelectedPackagesStep$InstallTask.run(InstallSelectedPackagesStep.java:242)
    at com.intellij.openapi.progress.impl.CoreProgressManager$TaskRunnable.run(CoreProgressManager.java:563)
    at com.intellij.openapi.progress.impl.CoreProgressManager.run(CoreProgressManager.java:142)
    at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:446)
    at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:392)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
    at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:127)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl.run(ProgressManagerImpl.java:126)
    at com.intellij.openapi.application.impl.ApplicationImpl.run(ApplicationImpl.java:366)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
    at org.jetbrains.ide.PooledThreadExecutor.run(PooledThreadExecutor.java:55)

apply plugin: 'com.android.application'
android {
    compileSdkVersion 23
    buildToolsVersion "23.0.3"
    defaultConfig {
        applicationId "co.berava"
        minSdkVersion 15
        targetSdkVersion 23
        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'])
    compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha2'
    compile 'com.android.support:appcompat-v7:23.4.0'
    testCompile 'junit:junit:4.12'
    androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.2'
    androidTestCompile 'com.android.support.test:runner:0.5'
    androidTestCompile 'com.android.support:support-annotations:23.4.0'
    compile 'com.github.delight-im:Android-AdvancedWebView:v2.1.0'
}

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.2'
    }
}

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

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

Answer 1

ConstraintLayout 1.0.0-alpha2 仅与 Android Studio 2.2 Preview 2 捆绑在一起。因此您必须从 http://tools.android.com/download/studio/canary/latest

安装预览版

Answer 2

将 1.0.0-alpha2 更改为 alpha1，它应该可以工作。我认为 alpha2 仅适用于 Android Studio preview 2，之后更改为 alpha1。

Answer 3

打开 SDK 管理器，然后转到 SDK 工具，如下图所示，检查所需的约束布局，在您的情况下为 com.android.support.constraint:constraint-layout:1.0.0-alpha2

文件 com.android.support.constraint:constraint-layout:1.0.0-alpha2

File with com.android.support.constraint:constraint-layout:1.0.0-alpha2

android

android-build

android-gradle-plugin