Run react-native on android emulator

Question

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?

Yes. I don't know what was that. I just recreated project and everything works fine. — alborozd, Jul 26 '16 at 14:49
I believe that if your Android phone (assuming you have one) is hooked up to your computer it may be trying to install it on that device. If it is plugged in I would recommend unplugging it, making sure your emulator is running and then trying the `react-native run-android` command again. — jasonmerino, Jul 29 '16 at 18:28
This might help [How to run react native on android emulator](https://www.youtube.com/watch?v=8ejuHsaXiwU) — InfiniteStack, Dec 28 '22 at 02:48

Rizwan Jamal · Accepted Answer · 2018-03-15T10:18:54.187

64

I had a similar problem, and after spending so much time and lots of searching about this issue the only trick worked for me:

Please Install the Required SDKs as shown in this figure

Configure Required SDKs

If You have already installed it, so you must have to update the following SDKs:
- Android SDK Tool (update it to latest version)
- Android SDK Platform-tools (update it to latest version)
- Android SDK Build-tools (update it to latest version)
- Android Support Repository under Extra folder (update it to latest version)
You Must have at least Installed the Same version Android API as the installed Android SDK Build-tools & Android SDK Platform-tools version as shown in the Configure Required SDKs figure above.

Note: Local Maven repository for Support Libraries which is listed as the SDK requirement in the official docs of React-native is now named as Android Support Repository in the SDK Manager .

edited Mar 15 '18 at 10:18

answered Aug 10 '16 at 10:16

Rizwan Jamal

1,254
10
13

Hi Friends !! If you like this answer please don't forget to vote it up ... Thanks :) – Rizwan Jamal Oct 10 '16 at 03:10
Can you explain how it addresses `adb reverse tcp:8081 tcp:8081` `error: closed` problem? – Saravanabalagi Ramachandran Oct 15 '16 at 06:02
2

It may be occur due to your android OS version ... `adb reverse tcp:8081 tcp:8081` only works with devices having OS version >= 5 – Rizwan Jamal Oct 17 '16 at 02:40

score 59 · Answer 2 · answered Jun 29 '20 at 10:10

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

score 32 · Answer 3 · answered Jun 24 '21 at 06:11

React Native (On Mac OS Big SUR)

i was stuck here. But updating the environment settings for Android studio did the trick.

nano ~/.zshrc

and paste

export ANDROID_SDK_ROOT=$HOME/Library/Android/sdk
export ANDROID_HOME=$HOME/Library/Android/sdk
export PATH=$PATH:$ANDROID_HOME/emulator:$PATH
export PATH=$PATH:$ANDROID_HOME/tools:$PATH
export PATH=$PATH:$ANDROID_HOME/tools/bin:$PATH
export PATH=$PATH:$ANDROID_HOME/platform-tools:$PATH
export JAVA_HOME=$(/usr/libexec/java_home)

control + o to save then enter then control + x to exit

then do source ~/.zshrc to compile

kill the runnig terminals and run npx react-native run-android

score 16 · Answer 4 · answered Jul 27 '20 at 10:36

16

You can also try use "doctor" command. It will fix most cases.

npx @react-native-community/cli doctor

answered Jul 27 '20 at 10:36

Cihan Yakar

2,402
28
30

score 13 · Answer 5 · answered Nov 21 '16 at 07:32

13

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

answered Nov 21 '16 at 07:32

scazzy

950
2
8
20

5

don't brew install the commandline tools, they are deprecated. Use Android Studio as instructed https://facebook.github.io/react-native/docs/getting-started.html#1-install-android-studio – Harry Moreno Jun 07 '18 at 02:32
1

Here update command line for brew install android platform tools above. Please try: brew cask install android-platform-tools – Nguyen Thuong Thong Apr 04 '20 at 14:56
3

```android avd``` is deprecated. Use ```android list avd```. – cmcodes Jun 16 '20 at 18:24

score 4 · Answer 6 · answered Sep 17 '16 at 04:03

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.

score 4 · Answer 7 · edited Nov 02 '20 at 18:27

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:

"Android SDK Build-Tools .."
"Android Emulator"
"Android SDK Plattform-Tools"
"Android SDK Tools"

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"

score 4 · Answer 8 · answered Mar 25 '21 at 09:48

4

If emulator not installed then try this command, (if homebrew installed)

brew install android-platform-tools

might be it will help.

answered Mar 25 '21 at 09:48

Pankaj bhalala

163
1
11

1

This solution worked for me on Mac catalina OS thanks – Muhammad Ateq Ejaz Oct 20 '22 at 16:28

score 2 · Answer 9 · answered Jul 29 '16 at 17:32

2

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

answered Jul 29 '16 at 17:32

Vincent Nguyen

21
1

Avinash Konwar · Answer 10 · 2021-09-23T10:29:53.447

2

In my case, there was an issue with the android/gradlew file. I think this happens when we move the code from Windows to Mac OS.

Reference:- https://stackoverflow.com/a/62216646/4786087

I was able to clean the android/gradlew file by running the following commands -

Step 1. On android folder cmd run

chmod +x gradlew

Step 2. After that run

./gradlew clean

Step 3. Next in the root of the project, run

react-native run-android

This should start building the app and launch it in the simulator if everything else is fine.

edited Sep 23 '21 at 10:29

answered Sep 22 '21 at 08:50

Avinash Konwar

21
3

Your answer could be improved with additional supporting information. Please [edit] to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers [in the help center](/help/how-to-ask). – Community Sep 22 '21 at 09:39

score 1 · Answer 11 · answered Aug 12 '20 at 14:13

1

Try

brew cask install android-platform-tools
adb reverse tcp:9090 tcp:9090
run the app

answered Aug 12 '20 at 14:13

Anuj

402
8
16

score 0 · Answer 12 · answered Apr 29 '19 at 03:08

0

In my case, this was happening because the android/gradlew file did not have execute permission. Once granted, this worked fine

answered Apr 29 '19 at 03:08

Allen Paul

129
1
3

3

Hey, can you tell me how to give execute permission to android/gradlew – Archana Sharma Dec 10 '19 at 10:18

score 0 · Answer 13 · answered Jan 27 '21 at 07:05

0

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

answered Jan 27 '21 at 07:05

Ahmedakhtar11

1,076
11
7

Run react-native on android emulator

13 Answers13

React Native (On Mac OS Big SUR)

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