I m having a problem when I try to run my react-native application in my Android Device. The device is connected even when I make sure that it is.
adb devices
List of devices attached
HMNBBCE6A2826109 device
Device: Huawei Y2
Android Version: 5.1
Debug mode: enbaled
the server is running.
When i run
react-native run-android
I get this 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/android-setup.html
I had the same problem with my linux laptop.
I ran this inside my app root folder and worked:
chmod 755 android/gradlew
You have to give permission on the android/gradlew.
I found the answer on this github issue
And you must also do this:
Click here to see the all article on the react-native docs page (the place where i get this information).
Configure the ANDROID_HOME environment variable
The React Native tools require some environment variables to be set up in order to build apps with native code.
Add the following lines to your $HOME/.bash_profile config file:
export ANDROID_HOME=$HOME/Android/Sdk
export PATH=$PATH:$ANDROID_HOME/tools
export PATH=$PATH:$ANDROID_HOME/platform-tools
.bash_profile is specific to bash. If you're using another shell, you will need to edit the appropriate shell-specific config file.
npx #react-native-community/cli doctor
This command checks your environment and displays a report of the status of react-native installation. Check the output carefully for other software you might need to install
I've been struggling with this for a while and in my case (using Windows 10) the solution was to install Java JRE and JDK even though I was already set up with Android Studio.
The problem got clearer when I created a new empty project with create-react-native-app Example and ran it with react-native run-android. The error then complained about JAVA_HOME variable.
Another good tip is to open up your project (located under "android"-folder in your react native project) in Android Studio and see if it compiles.
Good luck!
Try the command.
adb devices
See if there is any devices listed.
If so check the local.properties file inside android folder and check the sdk defined is correct.
if there is no local.properties files. add a new file named local.properties with the following content
## This file is automatically generated by Android Studio.
# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
#
# This file must *NOT* be checked into Version Control Systems,
# as it contains information specific to your local configuration.
#
# Location of the SDK. This is only used by Gradle.
# For customization when using a Version Control System, please read the
# header note.
#Thu May 25 18:29:08 IST 2017
sdk.dir=path to sdk
This command will also help
adb reverse tcp:8081 tcp:8081
Related
I'm just starting out my react track and thought of a little react-native app. Well, I installed Android Studio, the SDK and all that I needed according to https://reactnative.dev/docs/environment-setup, using the react-native CLI tab. But when I try to launch my emulator for any device on my list I get the error: AVD manager unable to locate adb. I have checked my %ANDROID_HOME% variable and it's set to the correct Sdk dir, I can use adb.exe inside the platform-tools dir with no apparent problem. But the AVD manager can't.
I even tried reinstalling Android SDK after deleting the platform-tools dir, or even installing a different version of it, but it just won't work!
Any thoughts on what is happening?
I struggled with this problem for a few days now and the number 1 suggestion I found is:
review your environment variables (such as %ANDROID_HOME%);
remove the platform-tools dir inside %ANDROID_HOME%, adb.exe is either corrupted or missing;
reinstall Android SDK and check for adb.exe inside %ANDROID_HOME%\platform-tools;
emulate a new device (you are a wizard Harry!);
Well, this didn't work for me but apparently worked for some people, especially for avast users (apparently it corrupts adb.exe 'cause it believes it to be malware).
What worked for me was:
In Android Studio go to File > Project Structure (Ctrl + Alt + Shift + S in windows);
Under Project Settings>Project>Project SDK must have a valid Android SDK selected;
emulate a new device (you are a wizard SadSack963!);
I'm on MacOS trying to run a react native (0.59.9) app on Android emulator. I've integrated Sentry using the wizard. Works fine on iPhone. On Android, this happens:
I try to run the app w/ react-native run-android
Build fails.
A problem occurred configuring project ':#sentry_react-native'.
SDK location not found. Define location with sdk.dir in the local.properties file or with an ANDROID_HOME environment variable.
I go into the android folder and create a local.properties file and paste this in:
sdk.dir=C:/Users/my_name/Library/Android/sdk
I try again to run the app w/ react-native run-android
Build fails.
A problem occurred configuring project ':#sentry_react-native'.
The SDK directory '/Users/my_name/project_path/android/C:/Users/my_name/Library/Android/sdk' does not exist.
Why is it concatenating the SDK dir w/ my project path? That doesn't make sense to me. How do I fix this?
this isn't a Sentry issue, but an Android environment issue, please look at https://reactnative.dev/docs/getting-started.html and set your Android env. properly.
Look for "Android development environment", good luck :)
I trying to run the react-native run-android through my React Project. After that,
I got this error
If you are installed sdk correctly, you can create an empty file in your android project named "local.properties" (if it does not exist) and define sdk address in it like this:
sdk.dir=/home/USERNAME/Android/Sdk
This address may changes based on your settings, it's the default address in linux.
I hope it helps you
I assume that you are using windows.
Add an environment variable ANDROID_HOME that points to
C:\Users\<your-user-name>\AppData\Local\Android\Sdk
You must follow the steps described in the URL:
https://facebook.github.io/react-native/docs/getting-started.html
go to Building Project with native Code and follow the steps and you must have a virtual or real device for testing. To check if any device is connected or not just go to your terminal and type adb devices and if there is any device it will show.
Everytime I try to launch a react native project I got this 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
I reinstalled nodejs, python and jdk using choco as suggested on official docs. Every single packages is installed as well as sdk 23.0.1
I can see my virtual device if I run adb devices USB debugging is activated and it's running android 6.
I setup ANDROID_HOME path in environment variables, I'm using same sdk path as you can see in the picture. I also setup another one for JAVA_HOME and Python.
My PATH looks like this:
I just don't understand what I'm supposed to do. I'm using a surface pro 4, Windows 10. I can run projects using expo. I literally tried everything, restart computer, start cmd using admin, create new virtual devices, uninstall everything and start from scratch, it just don't work.
You have pointed out two issues; first, make sure you have an android emulator running. To do that, you run adb devices and you say you can see you device.
The other issue is with the environment. To make sure your environment is setup properly for android, go to the root of your react-native project. Open the android project using android studio.
All errors with your environment will show up, use the automatic fixes provided by android studio. Clean the project in android studio. Close studio and go back to command line, run react-native run-android
Everything should work now.
When doing react-native start it will intentionally hang at "Loading dependency graph" (its not really hanging, its just waiting to receive build/bundle signals). This is correct. You have to open a second terminal then do react-native run-android.
If you get errors, then cd android in your project folder then run ./gradlew clean, then after that do another react-native start then react-native run-android.
Solution is to delete all java JDK and reinstall v8 / change JAVA_HOME to the new path.
Also changing gradle-wrapper.propertiesfile for each project you want to run
# update gradle to latest version
distributionUrl=https\://services.gradle.org/distributions/gradle-4.4.1-all.zip
Sometimes it dosen't compile with v4 so I have to use v3. React native is definitely confusing.
after install dan update environment JDK now I can install app on my device
I just moved to Ubuntu from Windows 10, I have installed react-native on my laptop and everytime I do react-native init it creates a project as expected. react-native run-android & react-native start commands are working as you'd expect them to be.
My main problem is I just copied a react native project from my Windows 10 machine to Ubuntu and now everytime I do react-native run-android This is the error I see on my console
This is the error I see on my console
Starting JS server...
Running /home/adeel/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
The problem was the React Native project was created in Windows and I was trying to run it in a Linux based platform. So what I did was I created a brand new project in my Linux environment and copied my RN code in the newly created project.
This was I believe due to the android file it created which is platform dependent. Windows and Linux have different GRADLE files. I hope this helps anyone who is having this issue.
Seems like it is not recognizing your device/emulator. Run "adb devices" to check. I guess you did the whole Android setup and installed Android Studio (SDK).