问题
Trying to create a simple app with FireStore and Google Authentication. Having problem with the gradle:
In project 'app' a resolved Google Play services library dependency depends on another at an exact version (e.g. "[15.0. 1]", but isn't being resolved to that version. Behavior exhibited by the library will be unknown.
Dependency failing: com.google.android.gms:play-services-flags:15.0.1 -> com.google.android.gms:play-services-basement@[ 15.0.1], but play-services-basement version was 16.0.1.
The following dependencies are project dependencies that are direct or have transitive dependencies that lead to the art ifact with the issue. -- Project 'app' depends onto com.google.firebase:firebase-firestore@17.1.5 -- Project 'app' depends onto com.firebaseui:firebase-ui-auth@4.2.0
For extended debugging info execute Gradle from the command line with ./gradlew --info :app:assembleDebug to see the dep endency paths to the artifact. This error message came from the google-services Gradle plugin, report issues at https:// github.com/google/play-services-plugins and disable by adding "googleServices { disableVersionCheck = false }" to your b uild.gradle file.
apply plugin: 'com.android.application'
android {
compileSdkVersion 27
defaultConfig {
applicationId "myapp.com"
minSdkVersion 19
targetSdkVersion 27
versionCode 11
versionName "1.1"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
multiDexEnabled true
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
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'
implementation 'com.google.firebase:firebase-firestore:17.1.5'
implementation 'com.firebaseui:firebase-ui-auth:4.2.0'
}
apply plugin: 'com.google.gms.google-services'
com.google.gms.googleservices.GoogleServicesPlugin
Project gradle:
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.2.1'
classpath 'com.google.gms:google-services:4.2.0'
}
}
Can somebody help me?
回答1:
The problem was it was missing a dependency. Adding com.google.firebase:firebase-auth solved the issue.
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
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'
implementation 'com.google.firebase:firebase-firestore:17.1.5'
// implementation'com.google.firebase:firebase-core:16.0.6'
// implementation'com.google.firebase:firebase-storage:16.0.5'
implementation'com.google.firebase:firebase-auth:16.1.0' => add this line
implementation 'com.firebaseui:firebase-ui-auth:4.2.0'
}
回答2:
There's a known bug with Google Services 4.2.0 that may cause this. Downgrading your google-services version to 4.1.0 in your project's build.gradle may resolve the issue
buildscript {
dependencies {
classpath 'com.google.gms:google-services:4.1.0' //decreased from 4.2.0
}
}
回答3:
i added the latest version of firebase messaging to build.gradle (Module: app) in my project and problem solved
implementation 'com.google.firebase:firebase-messaging:20.0.0'
回答4:
My project was working fine (No build issues). All of a sudden, I got this error
"resolved Google Play services library dependency depends on another at an exact version.."
I figured out that it was because I was building offline.
If anyone gets the same error, check if you are building offline.
回答5:
Thanks, but unfortunately, this didn't entirely work for me. I also had to add the following to my build.grade (Module:app)
implementation 'com.google.android.gms:play-services-flags:16.0.1'
implementation 'com.google.android.gms:play-services-basement:16.0.1'
回答6:
There are many answers here for individual solutions that do not really get down to the problem. Here is how to solve this in general:
As the original log output suggests, it is useful to run the build in the terminal with the following command:
./gradlew --info assembleDebug
This will give you a list of all dependencies that are involved in the conflict. It looks similar to this (I removed the package name stuff to make it a bit more readable):
Dependency Resolution Help: Displaying all currently known paths to any version of the dependency: Artifact(groupId=com.google.firebase, artifactId=firebase-iid)
-- task/module dep -> firebase-analytics@17.2.0
---- firebase-analytics:17.2.0 library depends -> play-services-measurement-api@17.2.0
------ play-services-measurement-api:17.2.0 library depends -> firebase-iid@19.0.0
-- task/module dep -> firebase-core@17.2.0
---- firebase-core:17.2.0 library depends -> firebase-analytics@17.2.0
------ firebase-analytics:17.2.0 library depends -> play-services-measurement-api@17.2.0
-------- play-services-measurement-api:17.2.0 library depends -> firebase-iid@19.0.0
-- task/module dep -> play-services-measurement-api@17.2.0
---- play-services-measurement-api:17.2.0 library depends -> firebase-iid@19.0.0
-- task/module dep -> firebase-iid@19.0.0
-- task/module dep -> firebase-messaging@17.1.0
---- firebase-messaging:17.1.0 library depends -> firebase-iid@[16.2.0]
-- task/module dep -> com.pressenger:sdk@4.8.0
---- com.pressenger:sdk:4.8.0 library depends -> firebase-messaging@17.1.0
------ firebase-messaging:17.1.0 library depends -> firebase-iid@[16.2.0]
From this list you get to know 2 things:
- Where is the conflicting depedency found
- What versions of the conflicting dependency are set up
In my case the conflicting dependency is firebase-iid: It's either @19.0.0 or @16.2.0
To fix this you must define the top-level dependency of the wrong firebase-iid explicitly in your build.gralde.
So in the upper log you can see that there are 2 examples of an out-dated version of firebase-iid@16.2.0. One comes from -- task/module dep -> firebase-messaging@17.1.0 the other one from a third-party library (pressenger). We don't have influence on the third-party library, so nothing to do here.
But for the other dependency, we have to declare it explicitly with the correct version:
implementation 'com.google.firebase:firebase-messaging:20.0.0'
Now the build works again. Happy ending :)
回答7:
Updating all my Google Play Services libraries to the latest in ALL modules solved the issue for me. I don't see that you have any Google Play Services libraries, but I wanna leave this answer here to those that might find this useful.
回答8:
The working solution for me was to remove "firebase-auth" and add "firebase-core" dependency. But after a couple of project rebuilds I started experiencing another compilation issue so I had to add the "firebase-auth" dependency in addition to the "firebase-core" in order to make it work:
implementation 'com.google.firebase:firebase-auth:19.0.0'
implementation 'com.google.firebase:firebase-core:17.0.1'
implementation 'com.firebaseui:firebase-ui-auth:4.3.1'
回答9:
Add FCM to your App added Lower dependency Then I changed the dependency to the latest version this problem has solved.
compile 'com.google.firebase:firebase-messaging:17.3.4'
to
implementation 'com.google.firebase:firebase-messaging:20.0.0'
回答10:
This is new thing happen to me that If your network is not secure and you are getting prompt of Untrusted Certificate.
If you will Accept or Reject, It will give this error until your network will not be secure.
You can work offline by checking Setting -> Gradle -> Offline Mode
来源：https://stackoverflow.com/questions/54055141/in-project-app-a-resolved-google-play-services-library-dependency-depends-on-a