react-native run-android 无法识别

Question

I've installed react-native-cli globally:

npm install -g react-native-cli

Then run:

react-native init AwesomeProject
cd AwesomeProject

I got the following structure:

-- AwesomeProject   
---- node_modules      
------ react-native    

When I run react-native run-android I get an error:
Command run-android unrecognized. Did you mean to run this inside a react-native project?

When I run react-native start I get the same.

react-native -v
prints:
react-native-cli: 0.2.0
react-native: n/a - not inside a React Native project directory

What I'm doing wrong?

Answer 1

What caused this for me was running npm install --save [package] when actually the system has previously been using yarn instead of npm .

To solve this I just deleted the node_modules folder and ran: yarn install and after that react-native run-ios (or android) works fine.

(duplcate of React Native: Command `run-ios` unrecognized )

Answer 2

我只是在没有参数的情况下运行“纱线”并修复了它。

Answer 3

Please try this cmd it will be help you

npm install --save react-native

Yes Thanks For Share This Its Work For me Thanks For Helping Good

Answer 4

the answer is easy nad it is not because of any bug at all.

make sure you are in correct directory 

if in current directory there is not any react native app ,it gives you this error

Answer 5

The problem was that I terminated init command because it looked like hanged without errors (even 24 hours later). To fix this I updated nodejs and npm to newer versions. Once I have done it react-native init was executed properly and there is no more problem with react-native run-android .

Answer 6

you have to update your npm. To do that

npm install npm@latest -g

Answer 7

react-native run-android is unrecognized

Make sure that you have installed npm or use in your project directory

npm install

Answer 8

try "yarn install". It will install the missing files in node_modules

It worked for me

Answer 9

This can be caused by a couple of issues.

!!! Before trying each solution remember to open a new terminal since you might have old paths sources from your .bashrc file. !!!

1. You did not install the contents of the project . In order to solve this you have to install the node_modules by typing:

   npm install or yarn install

2. You are coming back to a previously installed project after doing some funny things with your react-native installation and global configurations . (Upgrading the library, upgrading node doing something with globally installed node_modules).

You should clean all your caches and project modules

Here you can find a command to do all these things in one line (remember to replace npm with yarn accordingly): https://gist.github.com/jarretmoses/c2e4786fd342b3444f3bc6beff32098d

3. Your global installation of react-native or react-native-cli is broken . In this case simply reinstall your libraries globally.

   npm: npm install -g react-native && npm install -g @react-native-community/cli

   yarn: yarn global add react-native && yarn global add @react-native-community/cli

Answer 10

I think the command you are looking for is react-native run-android.

cd into your project and run this command where all you js files are present and not in the android folder.

It will run a package manager, do not close that. Also you need to have an emulator or a device connected to your computer with usb debugging enabled.

Hope the answer helped

Answer 11

npx react-native run-android

使用 npx 将选择本地 npm node_modules 目录

Answer 12

执行npm install然后运行react-native run-android

Answer 13

• Make sure you go into the directory having package.json

• If you have deleted nodemodules try "npm install".

• And don't forget the "init" in "react-native init MyApp". "init"
  initializes the package.json.

Answer 14

You can solve this by yarn or npx:

yarn react-native run-android
npx react-native run-android

Answer 15

I did everything correct while setting up, but was unable to run the android code. Just make sure while running the command react-native run-android that, you are inside the AwesomeProject folder created by the react-native init AwesomeProject command.

The folder by default for my PC was under C:\\Windows\\system32\\AwesomeProject in Windows.

Hope it helped for the first timers :)

Answer 16

You need to update the project with the latest version of react-native. Just run this command.

npm install --save react-native@latest

Answer 17

If you guys have latest react native version and facing this error

"UNRECOGNIZED COMMAND run-android".

then run follow these steps it will definitely help you.

Step: 1 -> create a new file " react-native.config.js " in the project root directory.

Step : 2 -> Inside " package.json " you have " assets " array inside " rnpm " object cut these assets from this and paste in your "react- native.config.js ". ie:

module.exports = {
assets: ['./assets/fonts'],
}

Step : 3 -> Remove " rnpm " object from " package.json ".

Step : 4 -> Replace your "scripts" with below mentioned "scripts" inside " package.json "

"scripts": {
    "start": "node node_modules/react-native/local-cli/cli.js start",
    "test": "jest",
    "android": "react-native run-android",
    "ios": "react-native run-ios",
    "lint": "eslint .",
    "android:prod": "npx react-native run-android --variant=release",
    "ios:prod": "react-native run-ios --configuration Release"
  }

That's it Happy Hacking..............

Answer 18

Step 01 : Make sure that you are in right directory
Step 02 : npm install run this command
Step 03 : npm audit fix run this to fix issues

Try deleting node_modules folder and then run the commands again

Answer 19

Everything has already tried like me? Then try again once "Yarn install after deleting node_modules". It worked for me.

Answer 20

Uninstall react-native from global

$ npm uninstall -g react-native

Then

Install react-native to global

$ npm install -g react-native-cli

Answer 21

That worked for me

react-native run-android


 start [options]                    starts the webserver
run-ios [options]                  builds your app and starts it on iOS simulator
run-android [options]              builds your app and starts it on a connected Android emulator or device
new-library [options]              generates a native library bridge
bundle [options]                   builds the javascript bundle for offline use
unbundle [options]                 builds javascript as "unbundle" for offline use
eject [options]                    Re-create the iOS and Android folders and native code
link [options] [packageName]       links all native dependencies (updates native build files)
unlink [options] <packageName>     unlink native dependency
install [options] <packageName>    install and link native dependencies
uninstall [options] <packageName>  uninstall and unlink native dependencies
upgrade [options]                  upgrade your app's template files to the latest version; run this after updating the react-native version in your package.json and running npm install
log-android [options]              starts adb logcat
log-ios [options]                  starts iOS device syslog tail
dependencies [options]             lists dependencies
info [options]                     Get relevant version info about OS, toolchain and libraries

They have made some unnoticeable changes. For instance run-android(now) run android(before).

Answer 22

尝试删除“package-lock.json”并重新运行“npm install”，然后尝试您的命令，它应该可以工作

Answer 23

I got this error because I had parenthesis in the path "(" and ")". Possibly this error is thrown for other special characters as well.

Answer 24

Ensure you run the command in the projects' terminal, preferably the Android IDE. Run the adb devices to know your active devices as well

Answer 25

If your package.json file is containing any comment then this error is comes. So remove all comments from package.json and then run command it will work.

Also try to run command npm install --save then it will log if other error there. If any others error also there, then first fix it and then run command it will work.

Answer 26

In Android Studio click in Tools -> SDK Manager -> in System Settings click in Android SDK -> choose tab SDK Tools, then enable Android SDK command line tools (lasted). It work for me!

Answer 27

Open your React Native Project Root Directory and locate android -> app -> build -> intermediates -> signing_config -> debug -> out -> signing-config.json

Delete signing-config.json file

And rebuild your application.

react-native run-android

Answer 28

首先，您需要删除 node_mouldes 和 package.lock.json 并在此之后进行 yarn install 如果您使用的是 Windows 操作系统，则您需要使用 PowerShell 而不是 git bash 并编写此命令“react-native run-android”

Answer 29

再次安装 npm 到最新的 react-native init project_name cd project_name 打开 android studio 在你的 project_name react_native run_android 中打开同一个 android 文件夹现在就可以工作了

Answer 30

Found the solution below. npm install clear the react-native in node_modules

At first running npm install didn't work, but then, deleting the package-lock.json file and running npm install did the job.

After that I installed react-navigation package seperately and it worked fine.

Answer 31

I've installed react-native-cli globally:

npm install -g react-native-cli

Then run:

react-native init AwesomeProject
cd AwesomeProject

I got the following structure:

-- AwesomeProject   
---- node_modules      
------ react-native    

When I run react-native run-android I get an error:
Command run-android unrecognized. Did you mean to run this inside a react-native project?

When I run react-native start I get the same.

react-native -v
prints:
react-native-cli: 0.2.0
react-native: n/a - not inside a React Native project directory

What I'm doing wrong?

Answer 32

上次您的项目运行良好，现在您突然收到此错误并且您已经安装了 Node 模块，然后尝试npm install --save react-native为我工作

Answer 33

In my case, I forgot to run npm install before running react-native run-android . I know this is a silly mistake but it may help.

Answer 34

In my case, there was an extra comma in the Package.json in the "dependencies" section. "use-is-mounted-ref": "^1.4.0",

This made react to not be able to update, install anything. Last line shouldn't have any comma

Answer 35

First, ensure you have configured environment variables correctly. If yes, then make sure Powershell/cmd runs in the project's directory and node js is configured correctly.

Answer 36

I got this because I accidentally installed a react template and not a react-native template

Answer 37

I've installed react-native-cli globally:

npm install -g react-native-cli

Then run:

react-native init AwesomeProject
cd AwesomeProject

I got the following structure:

-- AwesomeProject   
---- node_modules      
------ react-native    

When I run react-native run-android I get an error:
Command run-android unrecognized. Did you mean to run this inside a react-native project?

When I run react-native start I get the same.

react-native -v
prints:
react-native-cli: 0.2.0
react-native: n/a - not inside a React Native project directory

What I'm doing wrong?

Answer 38

I've installed react-native-cli globally:

npm install -g react-native-cli

Then run:

react-native init AwesomeProject
cd AwesomeProject

I got the following structure:

-- AwesomeProject   
---- node_modules      
------ react-native    

When I run react-native run-android I get an error:
Command run-android unrecognized. Did you mean to run this inside a react-native project?

When I run react-native start I get the same.

react-native -v
prints:
react-native-cli: 0.2.0
react-native: n/a - not inside a React Native project directory

What I'm doing wrong?

Answer 39

I forgot to change the directory first after run react-native init command. When I ran command inside the react-native project directory it worked post that run the command npx react-native run-ios or run-andoid, it will work.

error Unrecognized command "run-android". info Run "react-native --help" to see a list of all available commands.

Answer 40

Firstly you have run cmd line as a admin before enter "npx react-native init <your_project_name>" command. Then try other solutions.