Android Studio集成Unsplash Photo Picker时Gradle依赖解析失败求助

问题描述 #

按照Unsplash官方文档集成Unsplash Photo Picker到Android Studio项目，配置完Project和App层级的build.gradle后，Gradle编译失败，提示找不到com.github.unsplash:unsplash-photopicker-android:1.0.1依赖，仅在Google Maven和Maven Central中搜索，未找到该依赖。

错误信息 #

Execution failed for task ':gallery:desugarDebugFileDependencies'.
    Could not resolve all files for configuration ':gallery:debugRuntimeClasspath'.
    Could not find com.github.unsplash:unsplash-photopicker-android:1.0.1.
    Searched in the following locations:
    - https://dl.google.com/dl/android/maven2/com/github/unsplash/unsplash-photopicker-android/1.0.1/unsplash-photopicker-android-1.0.1.pom
    - https://repo.maven.apache.org/maven2/com/github/unsplash/unsplash-photopicker-android/1.0.1/unsplash-photopicker-android-1.0.1.pom
    Required by:
    project :gallery

问题原因 #

你只在buildscript的repositories中添加了JitPack仓库，但Gradle 7+版本中，模块依赖的仓库配置和插件仓库是分开的——buildscript里的仓库仅用于下载Gradle插件，模块依赖的仓库需要单独配置在dependencyResolutionManagement（项目级）或者模块级的repositories中。而Unsplash Photo Picker的Android库托管在JitPack上，所以Gradle找不到对应的依赖。

解决方案 #

方案一：修改项目级build.gradle（推荐） #

在项目级build.gradle中添加dependencyResolutionManagement块，统一管理所有模块的仓库：

// Top-level build file where you can add configuration options common to all sub-projects/modules.
plugins {
    id 'com.android.application' version '7.3.1' apply false
    id 'com.android.library' version '7.3.1' apply false
    id 'org.jetbrains.kotlin.android' version '1.6.21' apply false
}

dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories {
        google()
        mavenCentral()
        maven { url 'https://jitpack.io' }
    }
}

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

方案二：修改App级build.gradle #

在App级build.gradle的android块之后，添加仓库配置：

plugins {
    id 'com.android.application'
    id 'org.jetbrains.kotlin.android'
    id 'androidx.navigation.safeargs.kotlin'
    id "kotlin-parcelize"
}

android {
    // 原有的android配置内容不变
}

// 添加以下仓库配置
repositories {
    google()
    mavenCentral()
    maven { url 'https://jitpack.io' }
}

dependencies {
    // 原有的依赖内容不变
}

操作步骤 #

1. 选择上述任一方案修改对应的build.gradle文件
2. 点击Android Studio右上角的「Sync Now」同步Gradle
3. 重新编译项目

内容的提问来源于stack exchange，提问作者linuxbeginner