Android Studio 使用config.gradle 管理依赖库

在project根目录下创建一个config.gradle，将一些配置信息及第三方依赖统一管理。

ext {    android = [            compileSdkVersion      : 25,            buildToolsVersion      : "26.0.2",            applicationId          : "com.xxxx.xxxxx",            minSdkVersion          : 19,            targetSdkVersion       : 25,            versionCode            : 1,            versionName            : "1.0"    ]    dependVersion = [            support: "25.3.1"    ]    dependencies = [            //android-support            "support-v4"            : "com.android.support:support-v4:${dependVersion.support}",            "appcompat-v7"          : "com.android.support:appcompat-v7:${dependVersion.support}",            "design"                : "com.android.support:design:${dependVersion.support}",            "recyclerview"          : "com.android.support:recyclerview-v7:${dependVersion.support}",            "cardview"              : "com.android.support:cardview-v7:${dependVersion.support}",            //http            "retrofit2"             : "com.squareup.retrofit2:retrofit:2.1.0",            "converter-scalars"     : "com.squareup.retrofit2:converter-scalars:2.1.0",            "converter-gson"        : "com.squareup.retrofit2:converter-gson:2.1.0",            "adapter-rxjava2"       : "com.squareup.retrofit2:adapter-rxjava2:2.2.0",            //httpcache            "rxCache"               : "com.github.VictorAlbertos.RxCache:runtime:1.8.0-2.x",            "Jolyglot-gson"         : "com.github.VictorAlbertos.Jolyglot:gson:0.0.3",            //rxjava            "rxjava"                : "io.reactivex.rxjava2:rxjava:2.0.6",            "rxandroid"             : "io.reactivex.rxjava2:rxandroid:2.0.1",            "rxbinding2"            : "com.jakewharton.rxbinding2:rxbinding:2.0.0",            rxlifecycle2            : "com.trello.rxlifecycle2:rxlifecycle:2.1.0",            rxlifecomponents        : "com.trello.rxlifecycle2:rxlifecycle-components:2.1.0",            //dagger2            "dagger"                : "com.google.dagger:dagger:2.7",            "dagger-compiler"       : "com.google.dagger:dagger-compiler:2.7",            //ui            "constraint-layout"     : "com.android.support.constraint:constraint-layout:1.0.2",            "fragmentation"         : "me.yokeyword:fragmentation:1.0.0",            "butterknife"           : "com.jakewharton:butterknife:8.8.1",            "butterknife-compiler"  : "com.jakewharton:butterknife-compiler:8.8.1",            "ultra-ptr"             : "in.srain.cube:ultra-ptr:1.0.11",            "bottom-bar"            : "com.roughike:bottom-bar:2.3.1",            "BaseAdapterHelper"     : "com.github.CymChad:BaseRecyclerViewAdapterHelper:2.9.24",            "glide"                 : "com.github.bumptech.glide:glide:4.0.0-RC1",            "banner"                : "com.youth.banner:banner:1.4.9",            "viewanimator"          : "com.github.florent37:viewanimator:1.0.5",            "tablayout"             : "com.flyco.tablayout:FlycoTabLayout_Lib:[email protected]",            "FlycoDialog"           : "com.flyco.dialog:FlycoDialog_Lib:[email protected]",            "richtext"              : "com.zzhoujay.richtext:richtext:2.5.2",            "transformations"       : "jp.wasabeef:glide-transformations:2.0.2",            "PhotoView"             : "com.github.chrisbanes:PhotoView:2.1.2",            "videoplayer"           : "fm.jiecao:jiecaovideoplayer:5.7",            "lottie"                : "com.airbnb.android:lottie:2.1.0",            "progressbar"           : "me.zhanghai.android.materialprogressbar:library:1.4.1",            "transitionhelper"      : "me.immortalz:transitionhelper:1.0.6",            "swipebacklayout"       : "cn.bingoogolapple:bga-swipebacklayout:[email protected]",            "gif-drawable"          : "pl.droidsonroids.gif:android-gif-drawable:1.2.8",            //Event            "androideventbus"       : "org.simple:androideventbus:1.0.5.1",            //db            "litepal"               : "org.litepal.android:core:1.5.1",            "retrolambda"           : "me.tatarka:gradle-retrolambda:3.7.0",    ]}

然后在项目project的build.gradle文件中引入

apply from: "config.gradle"

在app（或者其他module）目录下的build.gradle文件中使用如下配置:

compileSdkVersion rootProject.ext.android.compileSdkVersionbuildToolsVersion rootProject.ext.android.buildToolsVersiondefaultConfig {    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}compile rootProject.ext.dependencies["design"]compile rootProject.ext.dependencies["appcompat-v7"]compile rootProject.ext.dependencies["recyclerview-v7"]compile rootProject.ext.dependencies["picasso"]

使用这种方式的好处是当Android Support Repository有更新时，方便管理依赖包的版本号

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