[android] Android Material and appcompat Manifest merger failed

I have next grade

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0-rc01'
    implementation 'com.android.support.constraint:constraint-layout:1.1.2'
    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.material:material:1.0.0-rc01'

But when I want to build app I get next log:

Manifest merger failed : Attribute application@appComponentFactory value=(android.support.v4.app.CoreComponentFactory) from [com.android.support:support-compat:28.0.0-alpha3] AndroidManifest.xml:22:18-91
    is also present at [androidx.core:core:1.0.0-alpha3] 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.

Okey! Go to manifest and do it:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"



Then I get this error in my Logcat:

Manifest merger failed with multiple errors, see logs that I have Linked with it

The answer is

I'm also facing the same issue, for your android studio, you just change the android Gradle plugin version 3.3.2 and Gradle version is 5.1.1

First of all be sure to add this line in manifest tag


Then add tools replace your suggested one in Android studio

I had the same error when working with Groupie. implementation 'com.xwray:groupie:2.3.0'

I solved it by changing version to implementation 'com.xwray:groupie:2.1.0'

I don't know this is the proper answer or not but it worked for me

Increase Gridle Wrapper Property


and Build Gridle to

    classpath 'com.android.tools.build:gradle:3.4.2'

its showing error because of the version.

In may case I didn't want to pass to androidX. And I have to check my last changes. I figure out that the new component was --> lottie 2.8.0

So I downgrade it to: implementation 'com.airbnb.android:lottie:2.7.0'

Migrate to androidX if it an existing project. If it is new project add these two flags to Gradle.propeties


for more detail steps https://developer.android.com/jetpack/androidx or check this What is AndroidX?

I had this same problem for three days.

It is like android wants us to either use Kotlin Or AndroidX, they are doing away with Android.

But this is how I solved it.

  • I migrated my project to AndroidX. This does not bring in any errors related to this issue in question, It updates files respectively. No method, class or variable name needs to be changed in your application.

NB: You must be using the latest Libraries (build.grudle file) in the latest stable version of android studio 3.4.1

  1. Please go to Refactor->Migrate->Migrate to Android X.

  2. Please add this to your gradle.properties file:


And perform Sync.

All I did was go to the "Refactor" option on the top menu.

Then select "Migrate to AndroidX"

Accept to save the project as a zip file.

Please update Android Studio as well as Gradle to ensure no problems are encountered.

Create new project and compare your build.gradle files and replaced all

implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.1'

and other dependencies with the same as were in a new project someting like that

implementation 'androidx.appcompat:appcompat:1.0.0-alpha3'

implementation 'androidx.constraintlayout:constraintlayout:1.1.2'

implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0-alpha1'

androidTestImplementation 'androidx.test:runner:1.1.0-alpha3'

androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0-alpha3'

implementation 'androidx.core:core-ktx:1.0.0-alpha3'

And then fixed imports to use androidx in kotlin files.

I faced same error when i try to add Kotlin-KTX library to my project.

I try to AndroidX migration, and problem fixed!

Refactor/Migrate to AndroidX

just add these two lines of code to your Manifest file


If you do not intend to migrate to AndroidX follow the below steps

  1. In terminal type gradlew app:dependencies
  2. After dependencies are shown in the window press Ctrl+f and type androidX
  3. You will find all the dependencies which are using androidx lib internally you may have to downgrade that or use alternative for that to ensure it is no longer using androidX libs internally.

1.Added these codes to at the end of your app/build.gradle:

configurations.all {
   resolutionStrategy.force 'com.android.support:support-v4:28.0.0' 
   // the above lib may be old dependencies version       

2.Modified sdk and tools version to 28:

compileSdkVersion 28
buildToolsVersion '28.0.3'
targetSdkVersion  28

3.In your AndroidManifest.xml file, you should add two line:


Or Simply

  • Go to Refactor (Studio -> Menu -> Refactor)
  • Click the Migrate to AndroidX. it's working
  • it's working.

As of Android P, the support libraries have been moved to AndroidX

Please do a refactor for your libs from this page.


For solving this issue i would recommend to define explicitly the version for the ext variables at the android/build.gradle at your root project

ext {
    googlePlayServicesVersion = "16.1.0" // default: "+"
    firebaseVersion = "15.0.2" // default: "+"

    // Other settings
    compileSdkVersion = <Your compile SDK version> // default: 23
    buildToolsVersion = "<Your build tools version>" // default: "23.0.1"
    targetSdkVersion = <Your target SDK version> // default: 23
    supportLibVersion = "<Your support lib version>" // default: 23.1.1

reference https://github.com/zo0r/react-native-push-notification/issues/1109#issuecomment-506414941

Try this


Rebuild your project.

Finally found a quick and easy solution by adding two lines in the android/build.gradle file.

googlePlayServicesVersion = "16.+"

firebaseVersion = "17.6.0"

Please follow this 100% correct.

Simple Solutions - migrate into AndroidX

in the gradle.properties, just add below two scripts


What was the reason ?

All packages in AndroidX live in a consistent namespace starting with the string androidx. The Support Library packages have been mapped into the corresponding androidx.* packages. For a full mapping of all the old classes and build artifacts to the new ones, see the Package Refactoring page.

Please see the Package Refactoring page

I had similar problem. Added two lines in gradle.properties file:


These two lines automatically resolved my dependency conflicts between google's files and third party dependencies. Here's the link to follow: https://developer.android.com/topic/libraries/support-library/androidx-overview#new-project

Only If you don't want to use androidx

So in my case, I am using a library that was using androidx but I am not using androidx so when I downgraded that library version the problem was resolved.

In my Case:

implementation 'com.github.turing-tech:MaterialScrollBar:13.+'

the above-mentioned library makes problem 13.+ will automatically get a new version of the library which using androidx. So I downgraded library version to:

implementation 'com.github.turing-tech:MaterialScrollBar:13.2.5'

And the problem was resolved.

See This Image and Add This line in your android AndroidManifest.xml


enter image description here

  • Go to Refactor (Image )
  • Click the Migrate to AndroidX. it's working
  • it's working.

Change proguardFile in build.gradle (Module: app) to the following

proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'

instead of

proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

This worked for me

Its all about the library versions compatibility

I was facing this strange bug couple of 2 hours. I resolved this error by doing these steps

hange your build.gradle dependencies into

  implementation 'com.google.android.gms:play-services-maps:17.0.0'


  implementation 'com.google.android.gms:play-services-maps:15.0.0'

Add these lines inside in AndroidManifest.xml file.



Follow these steps:

  • Goto Refactor and Click Migrate to AndroidX
  • Click Do Refactor

In my case, this is working perfectly.. I have added below two line codes inside manifest file


Credit goes to this answer.

Manifest file Example

if you are using capacitor, upgrade to capacitor/core 2.0.1 or up in your package.json

Reason of Fail

You are using material library which is part of AndroidX. If you are not aware of AndroidX, please go through this answer.

One app should use either AndroidX or old Android Support libraries. That's why you faced this issue.

For example -

In your gradle, you are using

  • com.android.support:appcompat-v7 (Part of old --Android Support Library--)
  • com.google.android.material:material (Part of AndroidX) (AndroidX build artifact of com.android.support:design)


So the solution is to use either AndroidX or old Support Library. I recommend to use AndroidX, because Android will not update support libraries after version 28.0.0. See release notes of Support Library.

Just migrate to AndroidX.Here is my detailed answer to migrate to AndroidX. I am putting here the needful steps from that answer.

Before you migrate, it is strongly recommended to backup your project.

Existing project

  • Android Studio > Refactor Menu > Migrate to AndroidX...
  • It will analysis and will open Refractor window in bottom. Accept changes to be done.


New project

Put these flags in your gradle.properties


Check @Library mappings for equal AndroidX package.

Check @Official page of Migrate to AndroidX

What is Jetifier?

Just remove the android.support dependancy

    implementation 'com.android.support:appcompat-v7:28.0.0-rc01'

Quoting From Material Guidelines

If you don’t want to switch over to the new androidx and com.google.android.material packages yet, you can use Material Components via the com.android.support:design:28.0.0-alpha3 dependency.

Note: You should not use the com.android.support and com.google.android.dependencies in your app at the same time.

Just removing this dependency works fine

    implementation 'com.android.support:appcompat-v7:28.0.0-rc01'

Here is complete dependencies example

    dependencies {
       implementation fileTree(dir: 'libs', include: ['*.jar'])
       implementation 'com.google.android.material:material:1.0.0-beta01'
       implementation 'com.android.support.constraint:constraint-layout:1.1.2'
       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'

change your build.gradle dependencies into

 implementation 'com.android.support:appcompat-v7:28.0.0-alpha3'


 implementation 'com.android.support:appcompat-v7:28.0.0-alpha1'

This issue mainly happened for old dependencies.

There have 2 solution:

First one:

Update all old dependencies and ClassPaths from Project level gradle files.

classpath 'com.android.tools.build:gradle:3.3.1'
classpath 'com.google.gms:google-services:4.2.0'

Second one:

Your project Migrate to AndroidX

From Android Studio Menu -> Refanctor -> Migrate to AndroidX

Thanks, let me know if anyone help from this answer.

in my case i am add in manifest file `


application tag of course, It will work

Examples related to android

Under what circumstances can I call findViewById with an Options Menu / Action Bar item? How to implement a simple scenario the OO way My eclipse won't open, i download the bundle pack it keeps saying error log getting " (1) no such column: _id10 " error java doesn't run if structure inside of onclick listener Cannot retrieve string(s) from preferences (settings) strange error in my Animation Drawable how to put image in a bundle and pass it to another activity FragmentActivity to Fragment A failure occurred while executing com.android.build.gradle.internal.tasks

Examples related to android-gradle-plugin

WARNING: API 'variant.getJavaCompile()' is obsolete and has been replaced with 'variant.getJavaCompileProvider()' Android Material and appcompat Manifest merger failed Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve Failed to resolve: com.google.firebase:firebase-core:16.0.1 com.google.android.gms:play-services-measurement-base is being requested by various other libraries Invoke-customs are only supported starting with android 0 --min-api 26 error: resource android:attr/fontVariationSettings not found Exception : AAPT2 error: check logs for details Could not resolve com.android.support:appcompat-v7:26.1.0 in Android Studio new project Failed to resolve: com.android.support:appcompat-v7:27.+ (Dependency Error)

Examples related to build.gradle

Android Material and appcompat Manifest merger failed Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve Android dependency has different version for the compile and runtime Setting up Gradle for api 26 (Android) What's the difference between implementation and compile in Gradle? More than one file was found with OS independent path 'META-INF/LICENSE' Android Studio - Failed to notify project evaluation listener error Gradle error: Minimum supported Gradle version is 3.3. Current version is 3.2 All com.android.support libraries must use the exact same version specification DELETE_FAILED_INTERNAL_ERROR Error while Installing APK

Examples related to gradle-plugin

Android Material and appcompat Manifest merger failed What's the difference between implementation and compile in Gradle? Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)