是否有可能以Android 28为目标（例如“targetSdkVersion 28”），同时使用appcompat-v7和Firebase？

有没有人设法瞄准安卓28（例如设置为targetsdkVersion28）并使用Firebase？我的build.gradle如下所示：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.google.firebase.example.fireeats"
        minSdkVersion 28
        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-rc02'
    implementation 'com.google.firebase:firebase-core:16.0.3'
    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'
}

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

Android Studio警告混合版本：

发现了28.0.0-rc02、26.1.0版本。示例包括com.android.support:animated vector drawable:28.0.0-rc02和com.android.support:support media compat:26.1.0

---

Firebase 16.0.3是否与Android 28支持库不兼容？

在撰写本文时，Firebase取决于支持库版本27，因此您确实需要提供显式覆盖。请参阅下面的工作构建文件

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.google.firebase.example.fireeats"
        minSdkVersion 28
        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-media-compat:28.0.0' // NEED TO ADD
    implementation 'com.android.support:support-v4:28.0.0' //NEED TO ADD
    implementation 'com.google.firebase:firebase-core:16.0.4'

    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'