react-native: npx react-native run-android not working

Hi. I got the same error when I created a blank project with “npx react-native init project” and tried to run it.

Hello, try running npx react-native doctor in your project’s directory terminal and when you got the error just press e inside your terminal and it will install/upgrade your files according to it

After some digging, I found out that the problem must indeed be somewhere in the setup script. This is how I managed to get it up & running (using npx react-native run-android). After creating a new project with npx react-native init AwesomeProject (as documented in React Native docs), I

1. created a folder “assets” in AwesomeProject\android\app\src\main
2. ran this command in AwesomeProject\:

npx react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-des android/app/src/main/res

1. opened the file AwesomeProject\android\gradle\wrapper\gradle-wrapper.properties
2. changed the gradle version in the distributionUrl property into: gradle-6.3-all.zip
3. ran this command in AwesomeProject\android\:

gradlew clean

After that I was able to run the project using npx react-native run-android without any problems. So to my knowledge, there is a bug somewhere in the setup.

Cheers, -P

https://reactnative.dev/docs/environment-setup

Add the following lines to your $HOME/.bash_profile or $HOME/.bashrc (if you are using zsh then ~/.zprofile or ~/.zshrc) config file:

export ANDROID_HOME=$HOME/Library/Android/sdk export PATH=$PATH:$ANDROID_HOME/emulator export PATH=$PATH:$ANDROID_HOME/tools export PATH=$PATH:$ANDROID_HOME/tools/bin export PATH=$PATH:$ANDROID_HOME/platform-tools

Hi @PiPauwels & @mgoral2 Could you run npx react-native doctor on your project’s root to identify problems with your environment?

@hramos I see that you added “Needs Repro” & “Verify on latest version” ; the steps to reproduce this bug are very simple: follow the setup instructions (on a Windows 10 machine). I tried this multiple times on the current version:

1. npx react-native init AwesomeProject
2. cd AwesomeProject
3. npx react-native start
4. npx react-native run-android

Result:

error 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
error Command failed: ./gradlew app:installDebug. Run CLI with --verbose flag for more details.

Using the steps in my previous comment resolves this issue.

@mgoral2 Did you finally get this to work? I’m having the exact same issue. Strange thing is, opening the project in Android Studio and running it directly from there works just fine, whereas running it from command line doesn’t…

Hi. I got the same error when I created a blank project with “npx react-native init project” and tried to run it.

Here is what worked for me: 1.Make sure you turn on Developer mode on your emulator/phone by going to setting->systemInfo->buildNumber Mutiple click on buildnumber to turn on developer mode ( same as real phone) 2. Ad the following the YourProject/android/local.properties Note:if local.properties file is not exist create it by the command “touch YourProject/android/local.properties” sdk.dir = “~/Android/Sdk” 3.Run react-native start 4.Run reac-native run-android Hope it help.

Warning: What I did below is nonsense The problem for me is that I had a faulty build tools so I deleted it and the setup script just downloaded it again and everything worked just fine

Here is what worked for me:

1. install Android NDK from Android Studio SDK manager. that might work on its own but for me it throws a new error something like “property ‘splitSelectExe’ does not exist.”
2. add this code to the end of “build.gradle” located in “your_app_folder/android/” subprojects { afterEvaluate {project -> if (project.hasProperty("android")) { android { compileSdkVersion 28 buildToolsVersion '29.0.0' buildTypes { releaseStaging {} } } } } }

this just change build tools version God knows why I should do that. I’m on Linux btw I don’t know if this will work on Windows or mac.