无法在android studio中导入某些库

Question

我正在尝试导入一些库，比如毕加索等，但Android Studio显示了这条消息。

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这是build.gradle(模块:应用程序)

apply plugin: 'com.android.application'

android {
compileSdkVersion 25
buildToolsVersion "25.0.3"
defaultConfig {
    applicationId "com.example.mypc.urumcafe"
    minSdkVersion 17
    targetSdkVersion 25
    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(include: ['*.jar'], dir: 'libs')
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', 
{
    exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha7'
compile 'com.android.volley:volley:1.0.0'
compile 'com.amitshekhar.android:android-networking:1.0.1'
compile 'com.android.support:design:25.3.1'
testCompile 'junit:junit:4.12'
}

我只想导入'com.amitshekhar.android:android-networking:1.0.1'but，因为你可以在上传的图像中看到“无法解决”错误。那么我如何修复这个错误?毕加索的库也是如此。谢谢。

Answer 1

将您的构建工具版本更新为27.0.3，并将相应的依赖项更新为版本27。

这是更新的build.gradle，它工作得很好。

apply plugin: 'com.android.application'

android {
    compileSdkVersion 27
    buildToolsVersion "27.0.3"
    defaultConfig {
        applicationId "com.example.mypc.urumcafe"
        minSdkVersion 17
        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(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2',
            {
                exclude group: 'com.android.support', module: 'support-annotations'
            })
    compile 'com.android.support:appcompat-v7:27.1.1'
    compile 'com.android.support.constraint:constraint-layout:2.+'
    compile 'com.android.volley:volley:1.0.0'
    compile 'com.amitshekhar.android:android-networking:1.0.1'
    compile 'com.android.support:design:27.1.1'
    testCompile 'junit:junit:4.12'
}

Answer 2

该库的最新版本是1.0.2。使用此命令，然后重试：

com.amitshekhar.android:android-networking:1.0.2

Answer 3

您可能缺少Maven Central (或用于v1.0.2的jitpack.io )存储库：

allprojects {
    repositories {
        google()
        mavenCentral()
        jcenter() 
    }
}