Run react-native on android emulator

Solution 1:

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 .

Solution 2:

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

Solution 3:

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

Solution 4:

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