gradle依赖项具有相同的版本规范，但仍然显示混合版本错误

Question

我已经读过这个线程，com.android.support库必须使用完全相同的版本规范和许多其他类似的线程，但没有一个答案解决了我的问题。

错误：-

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    defaultConfig {
        applicationId "freview1.com.freview"
        minSdkVersion 21
        targetSdkVersion 26
        versionCode 2
        versionName '2.2.1'
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        //vectorDrawables.useSupportLibrary = true
        versionNameSuffix '-alpha'
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}
/*
ext {
    supportLibVersion = '26.1.0'  // variable that can be referenced to keep support libs consistent
}
*/

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support:design:26.1.0'
    implementation 'com.android.support:percent:26.1.0'
    implementation 'com.android.support:support-vector-drawable:26.1.0' // VectorDrawableCompat
    implementation 'com.android.support:animated-vector-drawable:26.1.0'
    implementation 'de.hdodenhof:circleimageview:2.2.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    implementation 'com.google.firebase:firebase-core:16.0.3'
    implementation 'com.google.firebase:firebase-auth:16.0.3'
    implementation 'com.google.firebase:firebase-database:16.0.1'
    implementation 'com.google.firebase:firebase-storage:16.0.1'
    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'
    implementation 'com.android.support:recyclerview-v7:26.1.0'
    implementation 'com.android.support:cardview-v7:26.1.0'
    implementation 'com.theartofdev.edmodo:android-image-cropper:2.7.+'
    implementation 'com.squareup.picasso:picasso:2.5.2'
}    

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

Answer 1

如果要向项目中添加库，最好的方法是：

在android studio中：（从工具栏）文件\项目结构...\（从左窗口，模块下）应用程序\依赖关系\[使用绿色加号]

例如，如果要使用CompilesDKVersion27，导入代码应该如下所示：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "your project"
        minSdkVersion 16
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        vectorDrawables.useSupportLibrary = true
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}
dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:27.1.0'
    implementation 'com.android.support:support-v4:27.1.0'
    implementation 'com.android.support:design:27.1.0'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    implementation 'com.android.support:support-vector-drawable:27.1.0'

    implementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.android.support:cardview-v7:27.1.0'
    implementation 'com.android.support:recyclerview-v7:27.1.0'
    implementation 'com.android.support.test.espresso:espresso-core:3.0.1'

}

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "your project"
        minSdkVersion 14
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    buildToolsVersion '28.0.3'
}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation 'junit:junit:4.12'
    implementation 'com.android.support:support-v13:28.0.0'
    implementation 'com.android.support:support-v4:28.0.0'
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.android.support.test.espresso:espresso-contrib:3.0.2'
    implementation 'com.google.android.gms:play-services-maps:15.0.1'
    implementation 'com.android.support:cardview-v7:28.0.0'
    implementation 'com.android.support:mediarouter-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:2.0.0-alpha2'
    implementation 'com.android.support:recyclerview-v7:28.0.0'
    implementation 'com.android.support:support-annotations:28.0.0'

}

对我来说也是工作。在一个新库的帮助下，这些问题中的许多都将消失，您将拥有更高效的类。

这个版本可以帮助你，我测试了一下，它正在工作：

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation 'com.android.support:appcompat-v7:26.0.0-beta1'
    implementation 'com.android.support:support-v4:26.0.0-beta1'
    implementation 'com.android.support:design:26.0.0-beta1'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:0.5'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:2.2.2'
    implementation 'com.android.support:gridlayout-v7:26.0.0-beta1'
    implementation 'com.android.support:recyclerview-v7:26.0.0-beta1'
    implementation 'com.android.support:cardview-v7:26.0.0-beta1'
}