The complete error is as follows:
error Failed to install the app. Make sure you have the Android development environment set up:
The main troubleshooting points:
First of all, we directly open the project in Android Studio, so that it is easy to find specific errors. Through the project compilation, it is found that the corresponding version of jDK and SDK is not configured correctly. After downloading the corresponding version, configure the global
Take Mac OS as an example to set environment variables
Terminal input first
open -e .bash_profile
If there is no change, you must create a new one yourself:
cd ~
touch .bash_profile
Below is my .bash_profile
file (don’t forget to change the username: frank
)
# Java SDK
export JAVA_HOME=/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home
# Android SDK
export ANDROID_HOME=/Users/frank/Library/Android/sdk
export PATH=$PATH:$ANDROID_HOME/platform-tools
export PATH=$PATH:$ANDROID_HOME/tools
export PATH=$PATH:$ANDROID_HOME/emulator
export PATH=$PATH:$ANDROID_HOME/build-tools/29.0.2
export PATH=/usr/local/bin:/usr/local/sbin:~/bin:$PATH
[[ -s "$HOME/.profile" ]] && source "$HOME/.profile" # Load the default .profile
[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # Load RVM into a shell session *as a function*
Then enter in the terminal: (This can take effect without restarting)
source ~/.bash_profile
It should be noted that there may be settings that do not take effect after closing the terminal and reopening it. This is because
Mac will not load the ~/.bash_profile
file by default after startup. Here you can add a command to the .zshrc
file to load it after booting.
Execute the command in the terminal and open the .zshrc
file:
open -e ~/.zshrc
Add a command to the file: source ~/.bash_profile
Then enter in the terminal: (This can take effect without restarting)
source ~/.zshrc
2. But later use the react-native run-android
command to run the prompt: react-native :app:installDebug FAILED
The full text is reported as follows:
> Task :app:installDebug FAILED
29 actionable tasks: 4 executed, 25 up-to-date
Unable to install /Users/frank/Desktop/WorkProject/Recat Native/rn2/android/app/build/outputs/apk/debug/app-debug.apk
com.android.ddmlib.InstallException: Unknown failure: Security exception: You need the android.permission.INSTALL_GRANT_RUNTIME_PERMISSIONS permission to use the PackageManager.INSTALL_GRANT_RUNTIME_PERMISSIONS flag
java.lang.SecurityException: You need the android.permission.INSTALL_GRANT_RUNTIME_PERMISSIONS permission to use the PackageManager.INSTALL_GRANT_RUNTIME_PERMISSIONS flag
This can be solved by the following steps:
Then re-run react-native run-android