Question

我在sdk兼容性方面一直有错误。这是我的代码

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我在实现'com.android.support:appcompat-v7:27.1.1'时遇到错误。建议示例包括com.android.support:animated-vector-drawable:27.1.1和com.android.support:support-v4:26.1.0

这是我的构建gradle项目

apply plugin: 'com.android.application'

android {
    compileSdkVersion 27
        defaultConfig {
        applicationId "com.capstone.katugna"
        minSdkVersion 23
        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'
        }
        packagingOptions {
            exclude 'META-INF/LICENSE'
            exclude 'META-INF/LICENSE-FIREBASE.txt'
            exclude 'META-INF/NOTICE'
        }
    }
    productFlavors {
    }
    }

    dependencies {
        implementation fileTree(include: ['*.jar'], dir: 'libs')
        implementation 'com.android.support:appcompat-v7:27.1.1'
        implementation 'com.android.support:support-media-compat:27.1.1'
        implementation 'com.android.support:support-v4:27.1.1'
        implementation 'com.android.support.constraint:constraint-layout:1.1.2'
        implementation 'com.android.support:support-annotations:27.1.1'
        implementation 'com.google.firebase:firebase-core:16.0.1'
        implementation 'com.google.firebase:firebase-database:16.0.1'
        implementation 'com.google.firebase:firebase-auth:16.0.2'
        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'
    }


    apply plugin: 'com.google.gms.google-services'

Answer 1

由于多个传递依赖项而导致的版本冲突是从不同的api / lib中提取的，您可能需要在模块gradle中强制将解析策略设置为

configurations.all {
    resolutionStrategy.force 'com.android.support:support-annotations:27.1.1'
}

此外，在gradle中明确提到的依赖项为

implementation 'com.android.support:animated-vector-drawable:27.1.1'
implementation 'com.android.support:support-compat:27.1.1'

Answer 2

我遇到了同样的问题，我不得不将接下来的2个库添加到Gradle中的依赖项中。我不知道它为什么起作用，但是它起作用。

implementation 'com.android.support:support-media-compat:28.0.0'
implementation 'com.android.support:support-v4:28.0.0'

所有com.android.support库都必须使用与找到的版本27.1.1、26.1.0完全相同的版本规范

2 个答案: