react-native: Error on running react-native project : MainApplication.java:5: error: cannot find symbol import com.facebook.react.ReactApplication;

I have created project using expo ie expo init helloworld then ejected it using expo eject.

And then I tried to run in emulator with yarn run android . I got the following error.

$ yarn run android yarn run v1.3.2 $ react-native run-android Scanning folders for symlinks in D:\gajurlab\helloworld\node_modules (25ms) JS server already running. Building and installing the app on the device (cd android && gradlew.bat installDebug)… Incremental java compilation is an incubating feature. :app:preBuild UP-TO-DATE :app:preDebugBuild UP-TO-DATE :app:checkDebugManifest :app:preReleaseBuild UP-TO-DATE :app:prepareComAndroidSupportAppcompatV72301Library UP-TO-DATE :app:prepareComAndroidSupportRecyclerviewV72301Library UP-TO-DATE :app:prepareComAndroidSupportSupportV42301Library UP-TO-DATE :app:prepareComFacebookFrescoDrawee081Library UP-TO-DATE :app:prepareComFacebookFrescoFbcore081Library UP-TO-DATE :app:prepareComFacebookFrescoFresco081Library UP-TO-DATE :app:prepareComFacebookFrescoImagepipeline081Library UP-TO-DATE :app:prepareComFacebookFrescoImagepipelineOkhttp081Library UP-TO-DATE :app:prepareComFacebookReactReactNative0201Library UP-TO-DATE :app:prepareOrgWebkitAndroidJscR174650Library UP-TO-DATE :app:prepareDebugDependencies :app:compileDebugAidl UP-TO-DATE :app:compileDebugRenderscript UP-TO-DATE :app:generateDebugBuildConfig UP-TO-DATE :app:mergeDebugShaders UP-TO-DATE :app:compileDebugShaders UP-TO-DATE :app:generateDebugAssets UP-TO-DATE :app:mergeDebugAssets UP-TO-DATE :app:generateDebugResValues UP-TO-DATE :app:generateDebugResources UP-TO-DATE :app:mergeDebugResources UP-TO-DATE :app:bundleDebugJsAndAssets SKIPPED :app:processDebugManifest UP-TO-DATE :app:processDebugResources UP-TO-DATE :app:generateDebugSources UP-TO-DATE :app:incrementalDebugJavaCompilationSafeguard UP-TO-DATE :app:compileDebugJavaWithJavac :app:compileDebugJavaWithJavac - is not incremental (e.g. outputs have changed, no previous execution, etc.). D:\gajurlab\helloworld\android\app\src\main\java\com\mynewproject\MainApplication.java:5: error: cannot find symbol import com.facebook.react.ReactApplication; ^ symbol: class ReactApplication location: package com.facebook.react D:\gajurlab\helloworld\android\app\src\main\java\com\mynewproject\MainApplication.java:6: error: cannot find symbol import com.facebook.react.ReactNativeHost; ^ symbol: class ReactNativeHost location: package com.facebook.react D:\gajurlab\helloworld\android\app\src\main\java\com\mynewproject\MainApplication.java:14: error: cannot find symbol public class MainApplication extends Application implements ReactApplication { ^ symbol: class ReactApplication D:\gajurlab\helloworld\android\app\src\main\java\com\mynewproject\MainApplication.java:16: error: cannot find symbol private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) { ^ symbol: class ReactNativeHost location: class MainApplication D:\gajurlab\helloworld\android\app\src\main\java\com\mynewproject\MainApplication.java:36: error: cannot find symbol public ReactNativeHost getReactNativeHost() { ^ symbol: class ReactNativeHost location: class MainApplication D:\gajurlab\helloworld\android\app\src\main\java\com\mynewproject\MainActivity.java:5: error: MainActivity is not abstract and does not override abstract method getPackages() in ReactActivi ty public class MainActivity extends ReactActivity { ^ D:\gajurlab\helloworld\android\app\src\main\java\com\mynewproject\MainApplication.java:16: error: cannot find symbol private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) { ^ symbol: class ReactNativeHost location: class MainApplication D:\gajurlab\helloworld\android\app\src\main\java\com\mynewproject\MainApplication.java:35: error: method does not override or implement a method from a supertype @Override ^ 8 errors :app:compileDebugJavaWithJavac FAILED

FAILURE: Build failed with an exception.

What went wrong: Execution failed for task ‘:app:compileDebugJavaWithJavac’.

Compilation failed; see the compiler error output for details.

Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 9.46 secs Could not install the app on the device, read the error above for details. Make sure you have an Android emulator running or a device connected and have set up your Android development environment: https://facebook.github.io/react-native/docs/getting-started.html Done in 12.38s.

Info

$ react-native info Scanning folders for symlinks in D:\gajurlab\helloworld\node_modules (25ms)

Environment: OS: Windows 8.1 Node: 8.9.4 Yarn: 1.3.2 npm: 5.6.0 Watchman: Not Found Xcode: N/A Android Studio: Version 3.1.0.0 AI-173.4720617

Packages: (wanted => installed) react: 16.3.1 => 16.3.1 react-native: https://github.com/expo/react-native/archive/sdk-30.0.0.tar.gz => 0.55.4

About this issue

Original URL
State: closed
Created 6 years ago
Reactions: 20
Comments: 36 (2 by maintainers)

Most upvoted comments

I solved it by: change the line below in android/app/build.gradle file from implementation “com.facebook.react:react-native:+” // From node_modules to specific version of my react-native as in package.json implementation “com.facebook.react:react-native:0.57.5” // From node_modules

+80

phorvicheka on Nov 22, 2018

I had the same problem - adding the following block to allprojects.repositories in the project’s build.gradle fixed it for me:

maven {
    url "$rootDir/../node_modules/react-native/android"
}

Versions Android Studio: 3.4 Canary 10 gradle: 5.1 react-navive: 0.57.8

brien-givens on Jan 10, 2019

I have the same issue. Seems like “android” folder is missing referenced here:

maven {
        // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
        url "$rootDir/../node_modules/react-native/android"
    }

ddudek on Nov 1, 2018

Same here. No android folder in react-native/ Java compiler displays : cannot find symbol class ReactApplication and cannot find symbol ReactNativeHost.

Any update ?

lucasSndr on May 23, 2019

@basha777 try adding to the bottom of your app/build.gradle

task copyDownloadableDepsToLibs(type: Copy) {
    from configurations.compile
    into 'libs'
}

apply from: file("../../node_modules/@react-native-community/cli-platform-android/native_modules.gradle")
applyNativeModulesAppBuildGradle(project)

ckOfor on Sep 5, 2019

I’m having this error:

android/app/src/main/java/com/emphy/MainApplication.java:7: error: cannot find symbol
import com.facebook.react.PackageList;
                         ^
  symbol:   class PackageList
  location: package com.facebook.react
/Users/irynapolishchuk/mobile/android/app/src/main/java/com/emphy/MainApplication.java:45: error: cannot find symbol
      List<ReactPackage> packages = new PackageList(this).getPackages();
                                        ^
  symbol: class PackageList
2 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:compileDevDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

npmPackages: react: 16.8.6 => 16.8.6 react-native: 0.60.4 => 0.60.4 npmGlobalPackages: react-native-cli: 2.0.1 react-native-git-upgrade: 0.2.7

react-native@0.60.4 └── @react-native-community/cli @2.8.3

com.android.tools.build:gradle:3.4.1

dependencies { implementation fileTree(dir: “libs”, include: [“*.jar”]) implementation “com.facebook.react:react-native:+” … }

I’ve been updating RN 0.55.4 -> 0.60.4

juroMin on Aug 13, 2019

I had the same problem, follow the link: node_modules/react-native/android/com.facebbok.react/react-native. You can see the react-native version. after: change (build.gradle(app)): (implementation “com.facebook.react:react-native:+”) -> (implementation “com.facebook.react:react-native:0.58.4”) My version: 0.58.4 it worked for me.

Juman8 on Feb 13, 2019

Getting very similar error within packageList (also get in MainApplication if link in there):

--/proj/android/app/build/generated/rncli/src/main/java/com/facebook/react/PackageList.java:75: error: cannot find symbol
      new AppCenterReactNativePackage(MainApplication.this),
                                      ^
  symbol:   class MainApplication
  location: class PackageList
--/proj/android/app/build/generated/rncli/src/main/java/com/facebook/react/PackageList.java:76: error: cannot find symbol
      new AppCenterReactNativeAnalyticsPackage(MainApplication.this, getResources().getString(R.string.appCenterAnalytics_whenToEnableAnalytics)),
                                               ^
  symbol:   class MainApplication
  location: class PackageList
--/proj/android/app/build/generated/rncli/src/main/java/com/facebook/react/PackageList.java:77: error: cannot find symbol
      new AppCenterReactNativeCrashesPackage(MainApplication.this, getResources().getString(R.string.appCenterCrashes_whenToSendCrashes)),
                                             ^
  symbol:   class MainApplication
  location: class PackageList
3 errors

(For now removed as not essential)

aronedwards91 on Jul 19, 2019

while upgrading to from RN 0.59.9 to 0.60.5 using https://react-native-community.github.io/upgrade-helper/?from=0.59.9&to=0.60.5 i forgot to make changes in android/app/build.gradle file, after making the following changes my issue was solved Note: by default android/app/build.gradle is not expanded.

basha777 on Sep 5, 2019

@phorvicheka doesnt works


Could not find com.facebook.react:react-native:0.57.1.
  Searched in the following locations:
      file:/home/username/Android/Sdk/extras/m2repository/com/facebook/react/react-native/0.57.1/react-native-0.57.1.pom

Edit

This was the reason https://github.com/facebook/react-native/issues/21722#issuecomment-438819200

imerkle on Nov 30, 2018

In my case, the problem is solved by appending apply from: file("../../node_modules/@react-native-community/cli-platform-android/native_modules.gradle"); applyNativeModulesAppBuildGradle(project) at the bottom of android/app/build.gradle.

runryan on Nov 22, 2019

I’m having this error:
android/app/src/main/java/com/emphy/MainApplication.java:7: error: cannot find symbol
import com.facebook.react.PackageList;
                         ^
  symbol:   class PackageList
  location: package com.facebook.react
/Users/irynapolishchuk/mobile/android/app/src/main/java/com/emphy/MainApplication.java:45: error: cannot find symbol
      List<ReactPackage> packages = new PackageList(this).getPackages();
                                        ^
  symbol: class PackageList
2 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:compileDevDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.
npmPackages: react: 16.8.6 => 16.8.6 react-native: 0.60.4 => 0.60.4 npmGlobalPackages: react-native-cli: 2.0.1 react-native-git-upgrade: 0.2.7

react-native@0.60.4 └── @react-native-community/cli @2.8.3

com.android.tools.build:gradle:3.4.1

dependencies { implementation fileTree(dir: “libs”, include: [“*.jar”]) implementation “com.facebook.react:react-native:+” … }

I’ve been updating RN 0.55.4 -> 0.60.4

facing same issue while upgrade from RN 0.59.9 to 0.60.5.

basha777 on Sep 5, 2019

OK, I’ve figured out the problem, at least in my case.

Running ./gradlew app:dependencies shows that react-native-sound specifies an ancient RN version, and that’s taking precedence.

What I can’t work out is why it resolves correctly if I go back to the commit before the upgrade:

+--- project :react-native-sound
|    \--- com.facebook.react:react-native:0.12.+ -> 0.57.8 (*)

+--- project :react-native-sound
|    \--- com.facebook.react:react-native:0.12.+ -> 0.12.0 (*)

Maybe a change in resolution rules on the newer gradle version that ships with 0.58?

gtebbutt on Feb 1, 2019

Same as ChaabaneFahmi for me!

johnopthof on May 2, 2019

At the end, I stopped trying using expo and then eject the app, instead of that, I used the option “Build Projects with native code” from React Native official page, https://facebook.github.io/react-native/docs/getting-started...and It worked like expected

mariano55555 on Jan 12, 2019

I have the same problem…and I looked into node_modules/react-native and there is no “android” folder like it used to be in previous version, did you find any solution?

mariano55555 on Nov 7, 2018