为什么一个 Android Studio 项目中有两个 build.gradle 文件?

问题描述

将 Eclipse 项目导入 Android Studio 后，我看到两个 build.gradle 文件:

After having imported an Eclipse project into Android Studio, I see two build.gradle files:

1 - <PROJECT_ROOT>uild.gradle
2 - <PROJECT_ROOT>appuild.gradle

第一个版本较短，第二个版本包含compileSdkVersion等的定义.

The first version is shorter, the second version contains definitions for compileSdkVersion, etc.

拥有两个**文件的目的是什么?是否有单独的构建任务?

What is the purpose behind having two separate files? Are there separate build tasks?

推荐答案

<PROJECT_ROOT>appuild.gradle 专用于 app 模块.

<PROJECT_ROOT>uild.gradle 是一个顶级构建文件"，您可以在其中添加所有子项目/模块通用的配置选项.

<PROJECT_ROOT>uild.gradle is a "Top-level build file" where you can add configuration options common to all sub-projects/modules.

如果您在项目中使用另一个模块，作为本地库，您将拥有另一个 build.gradle 文件:<PROJECT_ROOT>moduleuild.gradle

If you use another module in your project, as a local library you would have another build.gradle file: <PROJECT_ROOT>moduleuild.gradle

对于顶级文件中的 example，您可以指定以下常用属性:

For example in your top level file you can specify these common properties:

buildscript {
    repositories {
        mavenCentral()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:1.3.0'
    }
}

ext {
    compileSdkVersion = 23
    buildToolsVersion = "23.0.1"
}

在你的 appuild.gradle

apply plugin: 'com.android.application'

repositories {
    mavenCentral()
}

android {
    compileSdkVersion rootProject.ext.compileSdkVersion
    buildToolsVersion rootProject.ext.buildToolsVersion
}