我該如何解決android studio中的依賴問題？

Question

我開始在android studio中構建項目，並在添加了一些Firebase身份驗證依賴項后遇到了這個問題。在“ com.android.support:appcompat-v7:28.0.0”下似乎有一條彎曲的紅線。

這是gradle應用程序代碼：

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'

這是項目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
}

.......這是輸出錯誤：

錯誤：清單合並失敗：uses-sdk：minSdkVersion 15不能小於庫[com.google.firebase：firebase-auth：18.0.0]中聲明的版本16 C：\\ Users \\ PC.gradle \\ caches \\ transforms-2 \\ files-2.1 \\ ce1ab53339b3343f02313d46e1b6166b \\ AndroidManifest.xml，因為該庫可能使用的API在15中不可用。建議：使用minSdk最多為15的兼容庫，或將該項目的minSdk版本提高到至少16，或使用工具： overlayLibrary =“ com.google.firebase.auth”強制使用（可能導致運行時失敗）

Answer 1

嘗試將minSdkVersion更改為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文件中將minSDK更改為16如果您還有其他具有等級的Loacal庫，請也將其更改

Answer 3

更新項目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
}

應用模塊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'

如果顯示為lint，還更新其他依賴項。

Answer 4

如果您想使用Firebase> = 17.0.0，則必須遷移到androidx

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

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