常用依赖
//1.直接依赖第三方开源库，一般是托管在 jitpack 或者 jcenter
implementation 'com.google.code.gson:gson:2.2.4'
implementation 'com.android.support:cardview-v7:25.0.0'
implementation 'com.android.support:design:25.0.0'
//2.直接依赖本地的aar文件，一般是在libs目录下
implementation(name: 'LiteAVSDK_Professional_5.1.5293', ext: 'aar')
//3.直接依赖本地的jar文件
implementation files('libs/bdasr_V3_20170801_60da871.jar')
//4.依赖本地的model
implementation project(':wavelibrary')
implementation project(':android-ffmpeg')
库工程依赖传递问题
1、依赖常用的基本类型有:provided和compile,provided 只在编译生效不会打包到 apk 或 aar 中;compile 是会打包到 apk或 aar 中的(如果是库工程的话有特殊情况,参考下面3).
2、app 工程的当前(compile+) 的依赖都会打包到 app 中
3、库工程中:
1) jar 包:远程依赖不会打包到 aar 中;本地依赖会;
2) aar:远程和本地都不不会打包到 aar中.
3) 如果你要提供你的库工程的 aar 给他人,你需要同时告诉他这个库工程依赖的其他aar 和远程 jar包(因为他们没有打包到 aar 中)
4) 如果通过工程依赖(即compile project(':lib')的方式), 依赖是可以传递的,所以不需要在声明一次依赖.
去掉重复依赖
1.第三方库中同样使用了implementation或者compile依赖相同的库
implementation('com.allenliu.versionchecklib:library:2.0.5') {
exclude group: 'com.android.support', module: 'appcompat-v7'
exclude group: 'com.android.support.constraint', module: 'constraint-layout'
exclude group: 'org.greenrobot', module: 'eventbus'
exclude group: 'com.squareup.okhttp3', module: 'okhttp'
}
2.在不同的库中出现相同的so文件
pickFirst只会打包第一个遇到的冲突的so，merge(碰到冲突会合并)和exclude(直接排除匹配到的文件,不建议使用)
packagingOptions {
pickFirst 'lib/arm64-v8a/libgnustl_shared.so'
pickFirst 'lib/armeabi-v7a/libgnustl_shared.so'
}
遇到这种错误可以通过上面方法尝试解决
Error:Execution failed for task ‘:app:transformNativeLibsWithMergeJniLibsForDebug'. > More than one
补充知识：Gradle依赖的统一管理，解决依赖冲突
看见别人在用implementation rootProject.ext.dependencies["xxxx"]不知道是什么意思，上网查了一下，原来是为了解决或者说预防gradle依赖冲突的问题。
在项目开发中我们会经常引入多个Module,然而每个Module中又包含了V4、V7，为了升级新版本依赖包只用更改一次，我们决定采用Gradle依赖的统一管理，避免重复繁琐的劳动。
记录get到的新知识，用法如下：
1.在Project目录下新建config.gradle文件，文件名可自定义
具体内容如下：
ext {
android = [
compileSdkVersion : 27,
buildToolsVersion : "27.0.0",
minSdkVersion : 21,
targetSdkVersion : 27,
versionCode : 6,
versionName : "1.2.2",
renderscriptTargetApi : 21
]
version = [
supportLibraryVersion : "26.1.1",
okhttpVersion : "3.9.0",
retrofitVersion : "2.3.0",
glideVersion : "4.0.0",
butterknifeVersion : "8.8.1",
fragmentationVersion : "1.1.9",
]
dependencies = [
//base
"appcompat-v7" : "com.android.support:appcompat-v7:${version["supportLibraryVersion"]}",
"cardview-v7" : "com.android.support:cardview-v7:${version["supportLibraryVersion"]}",
"design" : "com.android.support:design:${version["supportLibraryVersion"]}",
"constraint-layout" : "com.android.support.constraint:constraint-layout:1.0.2",
//net
"gson" : "com.google.code.gson:gson:2.8.2",
"okhttp" : "com.squareup.okhttp3:okhttp:${version["okhttpVersion"]}",
"logging-interceptor" : "com.squareup.okhttp3:logging-interceptor:${version["okhttpVersion"]}",
"retrofit" : "com.squareup.retrofit2:retrofit:${version["retrofitVersion"]}",
"converter-gson" : "com.squareup.retrofit2:converter-gson:${version["retrofitVersion"]}",
"adapter-rxjava2" : "com.squareup.retrofit2:adapter-rxjava2:${version["retrofitVersion"]}",
//dao
"greendao" : "org.greenrobot:greendao:3.2.2",
//rx
"rxjava" : "io.reactivex.rxjava2:rxjava:2.1.5",
"rxandroid" : "io.reactivex.rxjava2:rxandroid:2.0.1",
"rxbinding" : "com.jakewharton.rxbinding2:rxbinding:2.1.0",
"rxpermissions" : "com.tbruyelle.rxpermissions2:rxpermissions:0.9.5@aar",
//di
"javax_annotation" : "org.glassfish:javax.annotation:10.0-b28",
"butterknife" : "com.jakewharton:butterknife:${version["butterknifeVersion"]}",
"butterknife-compiler" : "com.jakewharton:butterknife-compiler:${version["butterknifeVersion"]}",
//multidex
"multidex" : "com.android.support:multidex:1.0.3",
//kotlin
"kotlin-stdlib" : "org.jetbrains.kotlin:kotlin-stdlib:1.2.10",
//ui test
"espresso-core" : "com.android.support.test.espresso:espresso-core:3.0.2",
"espresso-idling-resource" : "com.android.support.test.espresso:espresso-idling-resource:3.0.2",
//unit test , 为了整合mockito和PowerMockito，mockito暂时最高只支持2.8.9
"junit" : "junit:junit:4.12",
"mockito" : "org.mockito:mockito-core:2.8.9",
"powermock-module-junit4" : "org.powermock:powermock-module-junit4:1.7.4"
]
}
2.在Project的build.gradle中添加
apply from: "config.gradle"
3.在modle的build.gradle中添加引用
apply plugin: 'com.android.application'
android {
compileSdkVersion rootProject.ext.android["compileSdkVersion"]
buildToolsVersion rootProject.ext.android["buildToolsVersion"]
defaultConfig {
applicationId "json.chao.com.wanandroid"
minSdkVersion rootProject.ext.android["minSdkVersion"]
targetSdkVersion rootProject.ext.android["targetSdkVersion"]
versionCode rootProject.ext.android["versionCode"]
versionName rootProject.ext.android["versionName"]
//AndroidJunitRunner必须要显示指定在defaultConfig中，使用Gradle依赖管理无法使其生效
testInstrumentationRunner 'android.support.test.runner.AndroidJUnitRunner'
renderscriptTargetApi rootProject.ext.android["renderscriptTargetApi"]
renderscriptSupportModeEnabled true // Enable RS support
multiDexEnabled true
vectorDrawables.useSupportLibrary = true
}
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
//base
implementation rootProject.ext.dependencies["appcompat-v7"]
implementation rootProject.ext.dependencies["cardview-v7"]
implementation rootProject.ext.dependencies["design"]
implementation rootProject.ext.dependencies["constraint-layout"]
//net
implementation rootProject.ext.dependencies["gson"]
implementation rootProject.ext.dependencies["okhttp"]
implementation rootProject.ext.dependencies["retrofit"]
implementation rootProject.ext.dependencies["converter-gson"]
implementation rootProject.ext.dependencies["adapter-rxjava2"]
//dao
implementation rootProject.ext.dependencies["greendao"]
//rx
implementation rootProject.ext.dependencies["rxjava"]
implementation rootProject.ext.dependencies["rxandroid"]
implementation rootProject.ext.dependencies["rxbinding"]
implementation rootProject.ext.dependencies["rxpermissions"]
//UI测试
androidTestImplementation (rootProject.ext.dependencies["espresso-core"]) {
exclude group: 'com.android.support', module: 'support-annotations'
}
implementation (rootProject.ext.dependencies["espresso-idling-resource"]) {
exclude module: 'support-annotations'
}
}
（两个文件中有不对应的依赖方法，that's ok, 只是粘贴代码的时候删除了一些，知道用法就行了）
以上这篇Android Gradle依赖管理、去除重复依赖、忽略的方式就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持免费资源网。
