快速配置Android项目里版本信息

• 在项目根目录创建配置文件version.gragle,加入以下内容：

    def androidSupportVersion = '26.0.0'
    def androidConstraintLayout = '1.0.2'
  
    ext {
        versionCode = 1
        versionName = "1.0"
        compileSdkVersion = 26
        buildToolsVersion = "26.0.1"
        minSdkVersion = 16
        targetSdkVersion = 26
        appcompatV7 = "com.android.support:appcompat-v7:$androidSupportVersion"
        design = "com.android.support:design:$androidSupportVersion"
        constraintLayout = "com.android.support.constraint:constraint-layout:$androidConstraintLayout"
    }
  
    allprojects {
        repositories {
            jcenter()
            maven {
                url "https://maven.google.com"//以后的sdk都要从google自己的maven仓库中获取
            }
        }
    }
  

• 在根目录的build.gradle文件中引入刚创建的配置文件，在文件顶部加入以下内容：

    apply from:'version.gradle'
  

• 在具体Module的build.gradle文件中通过如下方式来使用刚定义好的版本信息：

    android {
        compileSdkVersion getProject().compileSdkVersion
        buildToolsVersion getProject().buildToolsVersion
        defaultConfig {
            applicationId "com.tedxiong.android"
            minSdkVersion getProject().minSdkVersion
            targetSdkVersion getProject().targetSdkVersion
            versionCode getProject().versionCode
            versionName getProject().versionName
            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
  
            externalNativeBuild {
                cmake {
                    cppFlags "-frtti -fexceptions"
                }
            }
            ndk {
                // Specifies the ABI configurations of your native
                // libraries Gradle should build and package with your APK.
                abiFilters 'armeabi-v7a'
            }
        }
        buildTypes {
            release {
                minifyEnabled false
                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            }
        }
        externalNativeBuild {
            cmake {
                path 'CMakeLists.txt'
            }
        }
    }
  
    dependencies {
        compile fileTree(dir: 'libs', include: ['*.jar'])
        androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
            exclude group: 'com.android.support', module: 'support-annotations'
        })
        compile getProject().appcompatV7
        compile getProject().constraintLayout
        compile getProject().design
        testCompile 'junit:junit:4.12'
    }
  

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