I try to run react-native app on genymotion android emulator on my mac.
When I write react-native run-android
It gets
Running /usr/local/opt/android-sdk/platform-tools/adb reverse tcp:8081 tcp:8081
error: closed
Could not run adb reverse: Command failed: /usr/local/opt/android-sdk/platform-tools/adb reverse tcp:8081 tcp:8081
Building and installing the app on the device (cd android && ./gradlew installDebug...
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/android-setup.html
MacBook-Pro-MacBook:ART-CarefulPeople macbook$
Then I've tried:
react-native start
react-native run-android
The same result.
Then I've tried:
react-native bundle --entry-file index.android.js --platform android --bundle-output android/app/src/main/assets/index.android.bundle
curl "http://localhost:8081/index.android.bundle?platform=android" -o "android/app/src/main/assets/index.android.bundle"
react-native run-android
The same result.
I've tried just adb reverse tcp:8081 tcp:8081
and it says error: closed
When I try to run app on android-sdk emulator it gets the same error above but without error: closed
.
From android studio I can run this app and it works on genymotion. Tell me please what should I do to run my app on android emulator?
This question is related to
android-emulator
react-native
adb
genymotion
react-native-android
You probably haven't run the Android SDK in forever. So you probably just have to update it. If you open the Android Studio Software it'll probably let you know that and ask to update it for you. Otherwise refer to following link: Update Android SDK
Try
On Windows 10 and Android Studio you can go in Android Studio to "File"->"Settings" in Settings then to "Appearance & Behavior" -> "System Settings" -> "Android SDK". In the Tab "SDK Tools" active:
If all installed then you can start the Emulator in Android Studio with "Tools" -> "Android" -> "AVD Manager". If the Emulator run you can try "react-native run-android"
On macOs I manage to fix this by adding:
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
to ~/.zsh_profile file.
and than type to your terminal
source $HOME/.zsh_profile
The issue was caused by using iTerm2 shell so it's required to edit its own config instead of default $HOME/.bash_profile as described in the official documentation https://reactnative.dev/docs/environment-setup
You can also try use "doctor" command. It will fix most cases.
npx @react-native-community/cli doctor
In my case, this was happening because the android/gradlew file did not have execute permission. Once granted, this worked fine
I had similar issue running emulator from android studio everytime, or on a physical device. Instead, you can quickly run android emulator from command line,
android avd
Once the emulator is running, you can check with adb devices
if the emulator shows up.
Then you can simply use
react-native run-android
to run the app on the emulator.
Make sure you've platform tools installed to be able to use adb
. Or you can use
brew install android-platform-tools
It happened to me that I had an instance of the packager running with an old project (I ran react-native start as usual). I was using Ubuntu 14.04. So what I did was to stop that instance and go to my project folder and in two different console tabs I ran these two commands separately:
npm start #here I used to run react-native start
react-native run-android
npm start is defined in my package.json as:
"start": "node_modules/react-native/packager/packager.sh"
I don't know if there is a sort of confusing stuff for react-native but that did the trick.
Had a similar problem. I updated my Genymotion and my android SDK's/libraries/dependencies and all seemed to work. To update my SDK's I used android sdk manager {ANDROID_SDK_FOLDER}/tools/android sdk
Source: Stackoverflow.com