android gradle error: libraries must use the exact same version specification.found version 28.0.0

Question

This is app level dependency.I have been trying to add firebase to my app.but it shows an error

apply plugin: 'com.android.application'  

    android {  
        compileSdkVersion 28  
        defaultConfig {  
            applicationId "com.example.rachitshah.fireapp"  
            minSdkVersion 15  
            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(dir: 'libs', include: ['*.jar'])

error in this line

 implementation 'com.android.support:appcompat-v7:28.0.0'  
        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'

this is firebase dependency.

implementation 'com.google.firebase:firebase-core:16.0.1'

take look to this link : https://stackoverflow.com/questions/42374151/all-com-android-support-libraries-must-use-the-exact-same-version-specification — mohammadReza Abiri, Feb 24 '19 at 12:51

score 1 · Accepted Answer · answered Feb 25 '19 at 04:48

When you add firebase dependency in gradle file by adding

implementation 'com.google.firebase:firebase-core:16.0.1'

Then there are 2 libraries have been added in your app as well

com.android.support:support-media-compat:26.1.0
com.android.support:support-v4:26.1.0

Their versions are different from versin 28.0.0 that why the error occurs.

To fix this error, change your gradle file

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'

    // Add this line
    implementation 'com.android.support:support-v4:28.0.0'

    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-core:16.0.1'
}

@RachitShah If your problem is solved then you should accepted this as answer. — Son Truong, Feb 25 '19 at 16:04
In the left side of my answer, there is a tick icon under an arrow icon. You just click on it and done. — Son Truong, Mar 10 '19 at 09:45

score 0 · Answer 2 · answered Feb 24 '19 at 12:46

0

check out this post android manifest merger failed, gms play services / firebase

You probably imported a library that does not use the specified version 28. So either remove the specification or make sure they are all on the same version

answered Feb 24 '19 at 12:46

fogx

1,749
2
16
38

android gradle error: libraries must use the exact same version specification.found version 28.0.0

2 Answers2