Question

我开始在android studio中构建项目，并在添加了一些Firebase身份验证依赖项后遇到了这个问题..“ com.android.support:appcompat-v7:28.0.0”下似乎有一条红线。 >

这是gradle应用程序代码：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.aden.adenmarket"
        minSdkVersion 15
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    implementation 'com.android.support:design:28.0.0'
    implementation 'com.android.support:support-v4:28.0.0'
    implementation 'com.google.firebase:firebase-core:17.0.0'
    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-auth:18.0.0'
}
apply plugin: 'com.google.gms.google-services'

这是项目gradle：

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        google()
        jcenter()

    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.0'
        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()

    }
}

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

....... 这是输出错误：

错误：清单合并失败：uses-sdk：minSdkVersion 15不能为小于库中声明的版本16 [com.google.firebase：firebase-auth：18.0.0] C：\ Users \ PC.gradle \ caches \ transforms-2 \ files-2.1 \ ce1ab53339b3343f02313d46e1b6166b \ AndroidManifest.xml 因为该库可能正在使用15建议中不提供的API：使用兼容的库，其minSdk最多为15，或者增加此项目的minSdk版本至少为16，或使用 tools：overrideLibrary =“ com.google.firebase.auth”强制使用（可能导致运行时失败）

Answer 1

尝试将minSdkVersion更改为16。

Answer 2

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.aden.adenmarket"
        minSdkVersion 16
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    } }

在gradle文件中将minSDK更改为16 如果您还有其他带有等级的Loacal图书馆，请也将其更改

Answer 3

更新项目build.gradle

buildscript {
    repositories {
        jcenter()
        mavenCentral()
        google()
        maven { url 'http://repo.maven.apache.org/maven2' }
        maven {
          url 'https://maven.fabric.io/public'
        }
    }
    dependencies {
    classpath 'com.android.tools.build:gradle:3.4.1'
    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()

    }
}

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

应用程序模块gradle：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    buildToolsVersion 28.0.3
    defaultConfig {
        applicationId "com.aden.adenmarket"
        minSdkVersion 19
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    implementation 'com.android.support:design:28.0.0'
    implementation 'com.android.support:support-v4:28.0.0'
    implementation 'com.google.firebase:firebase-core:17.0.0'
    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-auth:18.0.0'
}
apply plugin: 'com.google.gms.google-services'

如果它以lint显示，还更新其他依赖项。

Answer 4

如果要使用Firebase> = 17.0.0，则必须迁移到androidx

https://firebase.google.com/support/release-notes/android#update_-_june_17_2019

https://developer.android.com/jetpack/androidx/migrate

我该如何解决android studio中的依赖问题？

4 个答案: