Manifest Merger fails for appComponentFactory

Question

Using Google's so called Material Design 2.0 requires you to add

implementation 'com.google.android.material:material:1.0.0-rc01'

in the app Gradle which also includes

implementation 'com.android.support:appcompat-v7:28.0.0-rc02'

which shows conflicts

Here's what the log says

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-rc01] 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.

Even after adding that to the Manifest it shows Manifest Merger failed with multiple error

Pratik Butani · Answer 1 · 2019-02-22T11:41:37.987

30

This error is common nowadays:

When we get this types of error: When library is updated and providing use of AndroidX but we are using old one.

You can follow the steps to solve this:

Migrate your project to AndroidX:

With Android Studio 3.2 and higher, you can quickly migrate an existing project to use AndroidX by selecting Refactor > Migrate to AndroidX from the menu bar.

Note: To migrate an existing project that does not use any third-party libraries with dependencies that need converting, you can set the android.useAndroidX flag to true and the android.enableJetifier flag to false.

THIS STEP WILL DO EVERYTHING AUTOMATICALLY THAT ALL ANSWER SAYS TO DO MANUALLY

You can check Overview of AndroidX here.
More details for migration

Even If you get any other error like run-time build failed, then:

Invalidate cache and restart

OR

Clean your project

Hope it will helps to all. Thank you.

edited Feb 22 '19 at 11:41

answered Feb 22 '19 at 10:58

Pratik Butani

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I prefer this one, because it will auto backup for our old project. – Ticherhaz FreePalestine Jun 22 '19 at 11:24
1

Please remember to Click "Do refactor" in the bottom left after clicking "Migrate to AndroidX" – SupaHam Aug 08 '19 at 20:46
1

this solution works like a charm – Benny Sep 23 '19 at 17:19
Just to help further: set android.useAndroidX=true in gradle.properties, and same for enableJetifier – Pranav Kasetti Jun 07 '20 at 20:25

score 18 · Answer 2 · answered Dec 03 '18 at 12:46

To fix this you have to add the tools namespace and apply the suggested attributes to the application element recommended by the IDE.

<manifest xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools"
    package="your.package.uri">

 <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme"
        tools:replace="android:appComponentFactory"
        android:appComponentFactory="androidx">

Source

This is giving issue: tools:replace specified at line:23 for attribute android:appComponentFactory, but no new value specified — Wijay Sharma, Nov 01 '19 at 05:13

ʍѳђઽ૯ท · Answer 3 · 2021-02-01T06:23:56.367

9

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

If you added the tools:replace="android:appComponentFactory" and still got trouble by fixing it, create a new project, copy-paste the codes and the same dependencies in there. After that, it should be fixed i hope.

If it didn't solve the issue, try adding these two:

tools:replace="android:appComponentFactory"
android:appComponentFactory="androidx"

_{In AndroidManifest.xml > <application tag of course.}

edited Feb 01 '21 at 06:23

answered Sep 02 '18 at 08:47

ʍѳђઽ૯ท

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java.lang.ClassNotFoundException: Didn't find class "site.foxtransport.foxtaxi.whateverString" – Nusrat Nuriyev Feb 01 '21 at 00:43
Can you try with `android:appComponentFactory="androidx"`? – ʍѳђઽ૯ท Feb 01 '21 at 06:23
Yes, I have tried, thank you. It looks like in such a case anything lower than API 28 is incompatible – Nusrat Nuriyev Feb 03 '21 at 02:52

score 7 · Answer 4 · answered Sep 27 '18 at 11:51

7

Replace all android dependencies with androidx ones in build.gradle file.

For example:

implementation 'androidx.appcompat:appcompat:1.0.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha2'
implementation 'androidx.annotation:annotation:1.0.0'
androidTestImplementation 'androidx.test:runner:1.1.0-alpha3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0-alpha4'

answered Sep 27 '18 at 11:51

Arnav Rao

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This lead me to the solution for my setup! Thank you! – 1QuickQuestion Nov 11 '19 at 05:56

score 2 · Answer 5 · edited Mar 06 '19 at 12:23

2

Replace in dependencies from:

implementation 'com.google.android.material:material:1.0.0-rc01'

to:

implementation 'com.android.support:design:28.0.0'

edited Mar 06 '19 at 12:23

Zoe

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answered Nov 10 '18 at 22:19

Сергей Мельников

21
1

score -1 · Answer 6 · answered Oct 08 '18 at 07:11

-1

try : replace rc01 >> alpha1 . It's working for me !

answered Oct 08 '18 at 07:11

Đốc.tc

530
4
12

I think this can be a comment and not an answer – kboul Oct 08 '18 at 07:42

score -1 · Answer 7 · answered May 10 '19 at 18:19

-1

I also had this issue and I migrated to AndroidX, following the official documentation. Only via Refactor -> Migrate to AndroidX.

Migration to AndroidX Official Docs

Hope this helps.

answered May 10 '19 at 18:19

Isa Vell

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score -3 · Answer 8 · answered Mar 06 '19 at 10:48

-3

Deselecting instant run worked for me. Not sure if it helps for everyone.

answered Mar 06 '19 at 10:48

Kishore

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Manifest Merger fails for appComponentFactory

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