Android 项目实例config.gradle配置

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本文介绍如何通过修改配置文件来设置Android项目的Gradle构建参数。包括添加config.gradle文件以定义全局变量，更新build.gradle文件以应用这些变量，并在根目录的build.gradle中引入config.gradle。

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1、在根目录下添加config.gradle文件

ext{
    android=[
            compileSdkVersion: 25,
            buildToolsVersion: "25.0.3",
            applicationId    : "ui.huqing.com.demoapp",
            minSdkVersion    : 14,
            targetSdkVersion : 25,
            versionCode      : 1,
            versionName      : "1.0"
    ]

    dependencies = [
            "appcompat-v7" : 'com.android.support:appcompat-v7:25.+',
            "constraint-layout" : 'com.android.support.constraint:constraint-layout:1.0.2',
            "circleimageview1"     : "de.hdodenhof:circleimageview:2.2.0",
    ]
}

2、改项目中的build.gradle

原来
这里写图片描述
改完后

apply plugin: 'com.android.application'

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

    defaultConfig {
        applicationId rootProject.ext.android.applicationId
        minSdkVersion rootProject.ext.android.minSdkVersion
        targetSdkVersion rootProject.ext.android.targetSdkVersion
        versionCode rootProject.ext.android.versionCode
        versionName rootProject.ext.android.versionName
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        javaCompileOptions {
            annotationProcessorOptions {
                arguments = [moduleName: project.getName()]
            }
        }
        multiDexEnabled true
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
        debug {
            buildConfigField "boolean", "LOG_DEBUG", "true"
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile rootProject.ext.dependencies["constraint-layout"]
    compile rootProject.ext.dependencies["appcompat-v7"]
    compile rootProject.ext.dependencies["circleimageview1"]
    testCompile 'junit:junit:4.12'
}