第一： 让我解释一下这种情况，我有一个可与google Api配合使用的sdk并实现了很多依赖关系。然后我将lib实现到我的新应用中，该新应用也实现了依赖关系。一切正常，直到我尝试运行该应用。
当我在设备上运行（在设备上）时，出现以下错误消息：
Error: Program type already present: com.google.android.gms.location.places.zza
在Gradle日志中包含以下堆栈跟踪（不是全部）
Program type already present: com.google.android.gms.location.places.zza
Learn how to resolve the issue at https://developer.android.com/studio/buil/dependencies#duplicate_classes. at com.android.builder.profile.Recorder$Block.handleException(Recorder.java:55)
at com.android.builder.profile.ThreadRecorder.record(ThreadRecorder.java:104)
at com.android.build.gradle.internal.pipeline.TransformTask.transform(TransformTask.java:230)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)
at org.gradle.api.internal.project.taskfactory.IncrementalTaskAction.doExecute(IncrementalTaskAction.java:50)
这是build.gradle项目（ lib ）
buildscript {
repositories {
google()
jcenter()
}
dependencies {
//**------------Added Recently----------------**//
classpath 'com.android.tools.build:gradle:3.2.1'
classpath 'com.google.gms:google-services:4.1.0'
classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.7.3'
classpath 'com.github.dcendents:android-maven-gradle-plugin:1.5'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files}
}
plugins {
id "com.jfrog.bintray" version "1.7.3"
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
这是build.gradle模块：app（ lib ）
apply plugin: 'com.android.library'
archivesBaseName = "inngage-lib"
ext {
PUBLISH_GROUP_ID = 'br.com.inngage.sdk'
PUBLISH_ARTIFACT_ID = 'inngage-lib'
PUBLISH_VERSION = '2.2.0'
}
android {
lintOptions {
abortOnError false
}
signingConfigs {
w
release {
keyAlias 'inngage-lib'
keyPassword '************************************'
storeFile file('/Users/Downloads/inngage-lib.keystore')
storePassword '***********************************'
}
}
compileSdkVersion 28
useLibrary 'org.apache.http.legacy'
defaultConfig {
minSdkVersion 14
targetSdkVersion 28
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
signingConfig signingConfigs.release
}
debug {
minifyEnabled false
}
}
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support:design:28.0.0'
//noinspection UseOfBundledGooglePlayServices
//implementation 'com.google.android.gms:play-services:12.0.1'
// implementation "com.google.android.gms:play-services-base:16.0.1"
implementation 'com.google.firebase:firebase-core:16.0.4'
implementation 'com.google.firebase:firebase-messaging:17.3.4'
implementation 'com.google.android.gms:play-services-gcm:16.0.0'
implementation 'com.google.android.gms:play-services-maps:16.0.0'
implementation 'com.google.android.gms:play-services-location:16.0.0'
implementation 'com.google.android.gms:play-services-iid:16.0.0'
testImplementation 'junit:junit:4.12'
}
apply plugin: 'com.google.gms.google-services'
apply from: 'https://raw.githubusercontent.com/blundell/release-android-library/master/android-release-aar.gradle'
apply plugin: 'com.jfrog.bintray'
这是build.gradle项目（**我的应用**）
buildscript {
repositories {
maven { url "https://dl.bintray.com/inngage/repo" }
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.2.1'
classpath 'com.google.gms:google-services:4.1.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
maven { url "https://dl.bintray.com/inngage/repo" }
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
这是build.gradle Module：app（** my App **）
apply plugin: 'com.android.application'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.admin.sdk_test"
minSdkVersion 23
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
//noinspection GradleCompatible
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support:design:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
/* added */
implementation 'com.google.firebase:firebase-core:16.0.4'
implementation 'com.google.firebase:firebase-auth:16.0.5'
implementation 'com.google.firebase:firebase-messaging:17.3.4'
/* Inngage SDK*/
implementation 'br.com.inngage.sdk:inngage-lib:2.2.0'
/*---------------*/
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}
apply plugin: 'com.google.gms.google-services'
答案 0 :(得分：5)
我添加了此依赖关系，并且效果很好！
implementation 'com.google.android.gms:play-services-places:16.0.0'
答案 1 :(得分：2)
问题是，如果您发现需要com.google.android.gms.location的实现，可以将其置于不同版本下，则该依赖项会重复存在，您可以将其放置在其下，但不包括com.google.android.gms或只是在构建中。 gradle模块：项目
ext {
googlePlayServicesVersion = "16.0.0"
}
答案 2 :(得分：1)
already present绝不是由缺少依赖项引起的...
implementation ("br.com.inngage.sdk:inngage-lib:2.2.0") {
exclude group: "com.google.android.gms", module: "play-services"
}
只要看看MavenCentral，它就会添加一些重复和过时的依赖项。