Failed to resolve: play-services-tasks

Question

I have been tryong to add FCM to my android application for almost 48 hours now. I am keep on failing with these two errors on Android Studio. I have tried all the solutions in this post. Still I couldn't fix it.

I want firebase cloud messaging to be integrated in my app. So I did the followings.

Created an app in the firebase console
Included the .json config file
Added the SDK
implementation 'com.google.firebase:firebase-messaging:17.0.0' (In the app level gradle)
apply plugin: 'com.google.gms.google-services' (In the app level gradle file last line)
classpath 'com.google.gms:google-services:4.0.1' (In the project level gradle)
Added the repository google() (In the project level gradle)

I have tried syncing many times and I keep on getting the error

Failed to resolve: play-services-tasks Open File

Failed to resolve: play-services-basement Open File

On a side note, I am using the gradle plugin 3.1.3

    classpath 'com.android.tools.build:gradle:3.1.3'

Can someone please give me a hand here please.

It would be easier if you post the whole build.gradle file so others could try and copy-paste it on their side and see the errors themselves. — AL., Jun 20 '18 at 13:48
Could you try adding the google() repository as the first option in your dependencies blocks? — Arthur Thompson, Jun 20 '18 at 14:58
@ArthurThompson it worked. May I kbow the reason for this please? — Fawzan, Jun 20 '18 at 15:27
I believe there was an issue with the dependencies pushed/synced to jcenter and others. This will likely be resolved in a future push but for now using the google() repo first will allow all Firebase dependencies to resolve correctly. — Arthur Thompson, Jun 21 '18 at 14:45
Alright. I can accept an answer or can delete the post. But I think it should stay in SO. — Fawzan, Jun 21 '18 at 15:00

score 81 · Answer 1 · edited Jul 12 '20 at 00:04

81

In gradle (project), just change the position of google() before jcenter(), and the error is gone.

repositories {
    google()
    jcenter()
}

edited Jul 12 '20 at 00:04

Andreas is moving to Codidact

1,642
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answered Aug 01 '18 at 04:00

Mike Yan

1,669
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2

It worked like a charm! Could you explain the reason? Just curiosity. – Óscar Aug 10 '18 at 09:00
2

jcenter() need to be the last repositories, seem that jcenter() are using some of the repositories in google(). Putting jcenter() first will cause some repositories fail to load – Mike Yan Oct 30 '18 at 02:46

score 20 · Accepted Answer · answered Oct 23 '18 at 19:58

jcenter() sometimes act as a mirror repository for some Google dependencies. During Gradle building process, it looks for dependencies in the first entry listed in your repositories {...} block. So if this repository is broken or something bad occurs with any dependency the process will fail.

Here there is a recommended order for repository list

    repositories {
        google()
        maven {
            url 'https://maven.google.com/'
        }
        jcenter()
    }

late but a better answer. This explains why the order matters in this case. — Fawzan, Oct 24 '18 at 10:10

score 11 · Answer 3 · answered Jul 08 '18 at 13:23

11

Put google() repository at the very first line of dependencies. It will work.

answered Jul 08 '18 at 13:23

Samarakande

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2
3

score 1 · Answer 4 · answered Jun 25 '18 at 09:54

1

Add in your app.gradle

allprojects {
    repositories {
        jcenter()
        maven {
            url "https://maven.google.com"
        }
    }
}

and upgrade your dependencies version.

answered Jun 25 '18 at 09:54

Sushil Chaudhary

161
2
8

score 0 · Answer 5 · answered Oct 27 '18 at 05:30

0

I had this occurring due to outdated build tools version. Updating from 28.0.2 to 28.0.3 resolved it.

buildToolsVersion '28.0.2'

to:

buildToolsVersion '28.0.3'

in build.gradle file.

answered Oct 27 '18 at 05:30

CamHart

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Failed to resolve: play-services-tasks

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