Manifest Merger Failed:Attribute Application@Appcomponentfactory - Androidx

Manifest merger failed : Attribute application@appComponentFactory - Androidx

After hours of struggling, I solved it by including the following within app/build.gradle:

android {
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

Put these flags in your gradle.properties

android.enableJetifier=true
android.useAndroidX=true

Changes in build.gradle:

implementation 'androidx.appcompat:appcompat:1.0.2'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
implementation 'com.google.android.material:material:1.1.0-alpha04'

Refer to: https://developer.android.com/jetpack/androidx/migrate

ERROR: Manifest merger failed : Attribute application@appComponentFactory

Find a solution by adding googlePlayServicesVersion = "16.+" to app/build.gradle, since Google Services has been updated :

buildscript {
    ext {
        ...
        googlePlayServicesVersion = "16.+"
    }
    ...
}

Manifest merger failed : Attribute application@appComponentFactory Google Play services

A quick solution to your problem could be to add the following 3 lines in your AndroidMannifest.xml

    xmlns:tools="http://schemas.android.com/tools"
    tools:replace="android:appComponentFactory"
    android:appComponentFactory="@string/app_name"

So, after adding the above 3 lines your AndroidMannifest.xml should look like,

AndroidMannifest.xml

    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    ...
    <!--Add the following 3 lines-->
    <application
        xmlns:tools="http://schemas.android.com/tools"
        tools:replace="android:appComponentFactory"
        android:appComponentFactory="@string/app_name"

        ...

        >

        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        ...

    </application>

</manifest>

EDIT: Update your dependencies to the latest version as play-services-ads is using androidx version of support library and you are using the traditional one.

build.gradle (Module: app)

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'androidx.appcompat:appcompat:1.0.2'
    implementation 'androidx.constraintlayout:constraintlayout: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.android.gms:play-services-ads:18.2.0'
}

I hope it will fix your build error. Let me know if it works?

Manifest merger failed : Attribute application@appComponentFactory cant solve this

You are using

implementation 'com.google.firebase:firebase-messaging:19.0.1'

Firebase migrated to AndroidX in the latest release.
It means that you are using both, support libraries and androidx libraries.

You can:

• migrate to androidx as described below
• downgrade your firebase dependencies (but it is not a real solution because you have to migrate sooner or later)

You can check the official release notes:

Warning: This release is a MAJOR version update and breaking change.
The latest update to Google Play services and Firebase includes the following changes:

Migration from Android Support Libraries to Jetpack (AndroidX) Libraries. Libraries will not work unless you make the following changes in your app:

• Upgrade com.android.tools.build:gradle to v3.2.1 or later.
• Upgrade compileSdkVersion to 28 or later.
• Update your app to use Jetpack (AndroidX); follow the instructions in Migrating to AndroidX.

Manifest merger failed : Attribute application@appComponentFactory...Android Studio 3.2

Its because your project has different versions of the same library - androidx and pre-androidx.
In android studio tool bar go to: Refactor-> Migrate to androidX... -> Migrate

Manifest merger failed : Attribute application@appComponentFactory (android.support.v4.app.CoreComponentFactory)

The issue is happening because some of your libraries are using androidx components, please try to use a lower version, and make sure that you don't put + while adding dependencies

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