What does this mean? add 'tools:replace="android:appComponentFactory"' to element

Question

I am trying to use firebase in my Android Application.

This is my Build.gradle file

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.example.ecommerce5"
        minSdkVersion 27
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0-rc02'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'

    implementation 'com.google.firebase:firebase-analytics:17.2.0'

    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'

When I remove the following line of code and run the application, the application runs fine.

implementation 'com.google.firebase:firebase-analytics:17.2.0'

But when I add the above line,and run the code, the application shows the following error:

Manifest merger failed : Attribute application@appComponentFactory value=(android.support.v4.app.CoreComponentFactory) from [com.android.support:support-compat:28.0.0-rc02] AndroidManifest.xml:22:18-91
    is also present at [androidx.core:core:1.0.0] AndroidManifest.xml:22:18-86 value=(androidx.core.app.CoreComponentFactory).
    Suggestion: add 'tools:replace="android:appComponentFactory"' to <application> element at AndroidManifest.xml:5:5-19:19 to override.

What does this mean?

Suggestion: add 'tools:replace="android:appComponentFactory"' to <application> element at AndroidManifest.xml:5:5-24:19 to override.

You have to migrate your project to `AndroidX` to use latest version of `Firebase` components — Md. Asaduzzaman, Dec 04 '19 at 13:02
Check steps here for Migration: https://stackoverflow.com/a/59171476/2637449 — Md. Asaduzzaman, Dec 04 '19 at 13:03
`firebase-analytics:17.2.0` is latest version which requires androidx. Migrate to androidx or degrade the version — Vir Rajpurohit, Dec 04 '19 at 13:04
Does this answer your question? [Android Material and appcompat Manifest merger failed](https://stackoverflow.com/questions/51793345/android-material-and-appcompat-manifest-merger-failed) — Md. Asaduzzaman, Dec 04 '19 at 13:07
@Md.Asaduzzaman Hi, I tried migrating to androidX. It shows the following message: "Cannot perform refactoring operation. There were changes in code after usages have been found.". — Anwesa Roy, Dec 04 '19 at 13:08
@VirRajpurohit Hi, I tried migrating to androidX. It shows the following message: "Cannot perform refactoring operation. There were changes in code after usages have been found.". — Anwesa Roy, Dec 04 '19 at 13:08

score 0 · Answer 1 · answered Dec 04 '19 at 13:04

0

Convert/upgrade your project to use androidX. You have a mixture of support and androidX around.

I think there is a menu item in Androix Studio: Edit -> Convert to AndroidX

Either this or you try the suggestion from the error message:

 Suggestion: add 'tools:replace="android:appComponentFactory"' to <application> element at AndroidManifest.xml:5:5-19:19 to override.

answered Dec 04 '19 at 13:04

Grisgram

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Hi, I tried migrating to androidX. It shows the following message: "Cannot perform refactoring operation. There were changes in code after usages have been found.". How can I do the latter? – Anwesa Roy Dec 04 '19 at 13:07

score 0 · Answer 2 · answered Dec 04 '19 at 13:05

The error message provides the solution to your problem

Manifest merger failed : Attribute application@appComponentFactory value=(android.support.v4.app.CoreComponentFactory) from [com.android.support:support-compat:28.0.0-rc02] AndroidManifest.xml:22:18-91
is also present at [androidx.core:core:1.0.0] AndroidManifest.xml:22:18-86 value=(androidx.core.app.CoreComponentFactory).
Suggestion: add 'tools:replace="android:appComponentFactory"' to <application> element at AndroidManifest.xml:5:5-19:19 to override.

You need to add a replace tag to your manifest:

Suggestion: add 'tools:replace="android:appComponentFactory"' to <application> element at AndroidManifest.xml:5:5-19:19 to override.

Hi, I tried doing this. Still the problem persists. It shows the following error: Manifest merger failed with multiple errors, see logs — Anwesa Roy, Dec 04 '19 at 14:41

score 0 · Answer 3 · answered Dec 04 '19 at 13:06

0

You have used a version of firebase that uses AndroidX artifacts.

What does this mean? add 'tools:replace="android:appComponentFactory"' to element

3 Answers3