appcompact-v7依赖项出错

Question

用最新更新的android studio打开一个旧项目后，我对build.gradle文件有这个错误。我应该改变什么？

appcompact-v7依赖项出错： 所有com.android.support库必须使用完全相同的版本规范。找到版本26.1.0,19.1.0。

apply plugin: 'com.android.application'

android {
compileSdkVersion 19
buildToolsVersion '27.0.3'

defaultConfig {
    applicationId "X"
    minSdkVersion 15
    targetSdkVersion 19
    versionCode 7
    versionName "name"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:19.1.0'
    compile 'com.google.android.gms:play-services-ads:12.0.1'
}

Answer 1

这样做： -

apply plugin: 'com.android.application'

android {
compileSdkVersion 27
buildToolsVersion '27.0.3'

defaultConfig {
    applicationId "X"
    minSdkVersion 15
    targetSdkVersion 27
    versionCode 7
    versionName "name"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:27.0.3'
    compile 'com.google.android.gms:play-services-ads:12.0.1'
}

Answer 2

就像错误一样告诉你只需更改你的库版本：

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:27.1.0' //19.1.0 to 27.1.0
    compile 'com.google.android.gms:play-services-ads:12.0.1'
}

Answer 3

compile 'com.android.support:appcompat-v7:27.1.0'
compile 'com.google.android.gms:play-services-ads:12.0.1'

注意

如果你得到

Error:Failed to resolve: com.android.support:appcompat-v7:27.1.0'

然后在 PROJECT LEVEL google()部分使用 build.gradle 。

buildscript {

    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.0'


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

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

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

Finally

模块级 build.gradle将

apply plugin: 'com.android.application'

android {
compileSdkVersion 27
buildToolsVersion '27.0.3'

defaultConfig {
    applicationId "X"
    minSdkVersion 15
    targetSdkVersion 27
    versionCode 7
    versionName "name"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:27.1.0'
    compile 'com.google.android.gms:play-services-ads:12.0.1'
}

然后 Clean-Rebuild-Run