error: package com.android.annotations does not exist

Question

I have the following class

import com.android.annotations.NonNullByDefault;

@NonNullByDefault
public final class Log {
    ...
}

and here is my build.gradle file (some parts omitted)

apply plugin: 'com.android.application'

android {
    compileSdkVersion 25
    buildToolsVersion '24.0.1'

    defaultConfig {
        minSdkVersion 16
        targetSdkVersion 25
        versionCode 2
        versionName "0.2"
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_7
        targetCompatibility JavaVersion.VERSION_1_7
    }

}

dependencies {    
    compile 'com.android.support:appcompat-v7:25.0.0'
    compile 'com.android.support:support-annotations:25.0.0'
    compile 'com.android.support:design:25.0.0'
}

In Android Studio there is no warning raised for my class

However when I try to build and run my app I get this error from gradle

Information:Gradle tasks [:app:clean, :app:generateDebugSources, :app:generateDebugAndroidTestSources, :app:mockableAndroidJar, :app:prepareDebugUnitTestDependencies, :app:assembleDebug]
Warning:[options] bootstrap class path not set in conjunction with -source 1.7
/home/puter/git-repos/TaskManager3/app/src/main/java/com/treemetrics/taskmanager3/util/Log.java
Error:(3, 31) error: package com.android.annotations does not exist
Error:(7, 2) error: cannot find symbol class NonNullByDefault
Error:Execution failed for task ':app:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.
Information:BUILD FAILED
Information:Total time: 21.021 secs
Information:3 errors
Information:1 warning
Information:See complete output in console

Solution 1

To automatically fix all android to androidx issues for React Native (prerequisite npx)

Add the following two flags to true in your gradle.properties file at ProjectFolder/android/gradle.properties

android.useAndroidX=true
android.enableJetifier=true

Execute

npm install --save-dev jetifier
npx jetify
npx react-native run-android

In your package.json add the following to scripts

  "postinstall" : "npx jetify"

More info at https://github.com/mikehardy/jetifier

Update: This is now in-built in react-native 0.60. If you migrate to react-native 0.60 you won't need this step. - https://facebook.github.io/react-native/blog/2019/07/03/version-60#androidx-support

Solution 2

Use implementation androidx.appcompat:appcompat:1.0.2 in gradle and then

change import android.support.annotation.Nullable; to import androidx.annotation.NonNull; in the classes imports

Solution 3

Open gradle.properties and use following code:

android.useAndroidX=false
android.enableJetifier=false

or U can use these dependencies too:

implementation 'androidx.appcompat:appcompat:1.0.2'
 implementation 'androidx.annotation:annotation:1.0.2'

Solution 4

I had similar issues when migrating to androidx.

If by adding the below two lines to gradle.properties did not solve the issue

android.useAndroidX=true
android.enableJetifier=true

Then try

1. With Android Studio 3.2 and higher, you can migrate an existing project to AndroidX by selecting Refactor > Migrate to AndroidX from the menu bar (developer.android.com)

If you still run into issues with migration then manually try to replace the libraries which are causing the issue.

For example

If you have an issue with android.support.annotation.NonNull change it to androidx.annotation.NonNull as indicated in the below class mappings table.

Class Mappings

Maven Artifact Mappings

Solution 5

In my case I had to use

import androidx.annotation...

instead of

import android.annotation...

I migrated to AndroidX and forgot to change that.

View more solutions

Comments

[Moses]

I changed compile 'com.android.support:support-annotations:25.0.0' to compile 'com.android.support:support-v4:25.0.0' in my build.gradle and the import still reads import com.android.annotations.NonNullByDefault; and the error still occurs. Is this what you're talking about?

[Moses]

By the way, these are automatic imports being resolved by Android Studio.

[Moses]

Android Studio is automatically resolving the import for me, so it's coming from somwhere, but now I am not sure where. It is also still a mystery as to why the error is being thrown.

[Sanjeet]

If the imports are resolved correctly then the error should not have thrown.

[Moses]

That's my point, why is Android Studio resolving the import like this and not underlining the import in red, but gradle is throwing an error?

[wesley franks]

This doesn't work for me. I change the import and android automatically replaces it. Causing issues because it needs to be androidx but puts android.support imports.

[RajnishCoder]

ok i have more than 100 imports in different file of library, what to do ?

[Belal mazlom]

Thank you so much, this tool helped me a lot and saved my time, I hope I can give you more than a vote

[Ernestyno]

First install npm, when start from npx jetify. Worked. Thanx!

[BMX]

@RajnishCoder use jetifier which does it for you.

[Omar Aziz]

tried to add them under dependencies, but getting > Could not find method compile() for arguments [androidx.appcompat:appcompat:1.0.2] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDe‌​pendencyHandler.

[Omar Aziz]

also tried implementation instead of compile, same error

[Fareed Alnamrouti]

Can you run this command from the command line “npx jetify” in the Android project root directory

[Sanjay Joshi]

Yeah, I did that on the root level. For some reason, I had to run npm jetify manually in order to run the app properly. For the same directory, the android studio was throwing can't run npx jetify error on the directory. even though it was the project root repo. Thanks for your concerns.

[Chen Li Yong]

This is amazing! For some reason, the project I'm joining on is still using react-native 0.59.0, which is the source of my frustration when trying to compile some of the existing code from github and failed. While the decision to migrate to react native 0.60.0 is not within my hand, this "execute" block here is the live saver!

[Dr. Div]

Life Saver! Thanks so much!

[Raphael Pinel]

Is it necessary to change Nullable to NonNull, or is it just a typo?

[Buwaneka Sudheera]

You saved my day. Thank you.

[Andriy Makukha]

Both refactoring and changing from import android.support.annotation.NonNull; to import androidx.annotation.NonNull; worked for me.

[sejn]

I am using RN 0.59.9. Shall I use Jettifier and Android X. But I not need to migrate AndroidX. Why it getting issue with this?

[Pavan Garre]

@sejn everybody has to upgrade to androidX. You can read more info here developer.android.com/jetpack/androidx/migrate

[ChiragMS]

@PavanGarre I don't get why this is not marked as an answer. It worked like a charm for me and I must say, not in a million years I would have guessed it. Thanks man. Appreciate it.

[William]

Thanks you. The links to the Class and Artifact Mappings were what I have been searching for for ages.

[zr0gravity7]

Why does one need to install jetifier as a dev dependency?

[Ahmed Mahmoud]

Thanks a lot for your time and effort!