android - Gradle Firebase AdMob 依赖项与 app compat v7 28.0.0 冲突

Question

当我添加 AdMob 依赖项时，会出现这条红线:



完整的错误信息:

All com.android.support libraries must use the exact same version specification (mixing versions can lead to runtime crashes). Found versions 28.0.0, 26.1.0. Examples include com.android.support:animated-vector-drawable:28.0.0 and com.android.support:customtabs:26.1.0 less... (Ctrl+F1) Inspection info:There are some combinations of libraries, or tools and libraries, that are incompatible, or can lead to bugs. One such incompatibility is compiling with a version of the Android support libraries that is not the latest version (or in particular, a version lower than your targetSdkVersion). Issue id: GradleCompatible

如果我尝试让项目出现此错误消息:



我已经使缓存/重启无效，重新导入 gradle 并且没有任何效果......

Gradle 模块

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.dev.marcellocamara.pgm"
        minSdkVersion 19
        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'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support:support-v4:28.0.0'
    implementation 'com.android.support:design:28.0.0'
    implementation 'com.android.support:cardview-v7:28.0.0'
    implementation 'com.android.support:customtabs:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    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.google.firebase:firebase-core:16.0.8'
    implementation 'com.google.firebase:firebase-auth:16.2.1'
    implementation 'com.google.firebase:firebase-database:16.1.0'
    implementation 'com.google.firebase:firebase-storage:16.1.0'
    implementation 'com.google.android.gms:play-services-auth:16.0.1'
    implementation 'com.google.firebase:firebase-messaging:17.6.0'
    implementation 'com.google.firebase:firebase-ads:17.2.0'
}

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

Gradle 应用

buildscript {
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.2'
        classpath 'com.google.gms:google-services:4.2.0'

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

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

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

我查看了同样问题的另一个答案，但没有一个像我一样使用太多的 firebase 库。他们告诉添加支持 v7 28.0.0，我已经做到了。

Answer 1

通过关注此文档:https://developer.android.com/studio/build/multidex

我添加了 multiDexEnabled true到构建 gradle 模块:

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.dev.marcellocamara.pgm"
        minSdkVersion 19
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        multiDexEnabled true
    }

根据文档，为什么我使用 min SDK 作为 19，我添加了 'com.android.support:multidex:1.0.3'作为构建 gradle 模块的依赖，最后添加了 android:name="android.support.multidex.MultiDexApplication"到应用程序 manifest.xml

错误消息消失并且应用程序正在运行...