Android解决重复依赖问题_android 重复依赖annotation

在进行项目开发的时候有时候需要添加第三方依赖，或者导入Modules进行依赖，而导入的一些Modules中就有可能存在相同的依赖而版本却不一致，因此需要进行修改成统一版本，还有编译版本和构造版本最好尽量保持一致，而如果都是去拷贝粘贴使得版本一致，会使得如果版本需要更改时，每一个Modules都需要进行去更改，因此这里提供一种方法，让子使用到的Modules依赖于主Modules，而需要更改版本时，只需要更改主Modules的版本就可以了。

1.在Project同级目录下创建一个config.gradle文件，将需要用到的依赖写入该文件

ext {
    android = [
            compileSdkVersion: 25,
            buildToolsVersion: "25.0.2",

            minSdkVersion    : 15,
            targetSdkVersion : 22,

            versionCode      : 49,
            versionName      : '3.6.5',

            VSupportSdk      : '23.3.0',
            VRetrofitSdk     : "2.2.0",
            VOkhttp          : "3.4.2",
            VRxlifecycle     : "2.0.1",
            multidex         : "1.0.1"
    ]

    dependencies = [
             "appcompat-v7"               : "com.android.support:appcompat-v7:${android["VSupportSdk"]}",
            "support-v4"                 : "com.android.support:support-v4:${android["VSupportSdk"]}",
            "design"                     : "com.android.support:design:${android["VSupportSdk"]}",
            "annotations"                : "com.android.support:support-annotations:${android["VSupportSdk"]}",
            "recyclerview-v7"            : "com.android.support:recyclerview-v7:${android["VSupportSdk"]}",
            "multidex"                   : "com.android.support:multidex:${android["multidex"]}",

            "butterknife"                : "com.jakewharton:butterknife:8.4.0",
            "butterknife-apt"            : "com.jakewharton:butterknife-compiler:8.4.0",
            "eventbus"                   : "org.greenrobot:eventbus:3.0.0",
            "glide"                      : "com.github.bumptech.glide:glide:3.7.0",
            "picasso"                    : "com.squareup.picasso:picasso:2.5.2",
            "xrecyclerview"              : "com.github.limedroid:ARecyclerView:v1.1.5",
            "avi-loading"                : "com.wang.avi:library:1.0.2",

            "gson"                       : "com.google.code.gson:gson:2.6.2",
            "rxandroid"                  : "io.reactivex.rxjava2:rxandroid:2.0.1",
            "rxjava"                     : "io.reactivex.rxjava2:rxjava:2.0.1",

}`
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可以在Android节点下设置占位，并在dependencies节点下进行引用。

2.在项目的build.gradle中添加引用apply from: “config.gradle”

3.在Modules中进行需要的依赖添加，APP中同样可以进行使用

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

    defaultConfig {
        minSdkVersion rootProject.ext.android.minSdkVersion
        targetSdkVersion rootProject.ext.android.targetSdkVersion
        versionCode rootProject.ext.android.versionCode
        versionName rootProject.ext.android.versionName
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile rootProject.ext.dependencies["appcompat-v7"]
    compile rootProject.ext.dependencies["support-v4"]
    compile rootProject.ext.dependencies["design"]
    compile rootProject.ext.dependencies["annotations"]
    compile rootProject.ext.dependencies["recyclerview-v7"]

    compile rootProject.ext.dependencies["xrecyclerview"]
    compile rootProject.ext.dependencies["butterknife"]
    compile rootProject.ext.dependencies["glide"]

    }
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