Error react-native run-android

info Running jetifier to migrate libraries to AndroidX. You can disable it using “–no-jetifier” flag. Jetifier found 967 file(s) to forward-jetify. Using 4 workers… info JS server already running. ‘adb’ n�o � reconhecido como um comando interno ou externo, um programa oper�vel ou um arquivo em lotes. info Launching emulator… error Failed to launch emulator. Reason: No emulators found as an output of emulator -list-avds. warn Please launch an emulator manually or connect a device. Otherwise app may fail to launch. info Installing the app…

Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0. Use ‘–warning-mode all’ to show the individual deprecation warnings. See https://docs.gradle.org/6.0.1/userguide/command_line_interface.html#sec:command_line_warnings

FAILURE: Build failed with an exception.

• What went wrong: Task ‘installDebug’ not found in project ‘:app’.

• Try: Run gradlew tasks to get a list of available tasks. Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 7s

error Failed to install the app. Make sure you have the Android development environment set up: https://reactnative.dev/docs/getting-started.html#android-development-environment. Run CLI with --verbose flag for more details. Error: Command failed: gradlew.bat app:installDebug -PreactNativeDevServerPort=8081

FAILURE: Build failed with an exception.

• What went wrong: Task ‘installDebug’ not found in project ‘:app’.

• Try: Run gradlew tasks to get a list of available tasks. Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 7s

at makeError (C:\Users\LENOVO\Desktop\PROJETOS.ANO.2020\PROJETOS 02.2020\APLICATIVOS.REACT.NATIVE\app\app\node_modules\execa\index.js:174:9)
at C:\Users\LENOVO\Desktop\PROJETOS.ANO.2020\PROJETOS 02.2020\APLICATIVOS.REACT.NATIVE\app\app\node_modules\execa\index.js:278:16
at processTicksAndRejections (internal/process/task_queues.js:93:5)
at async runOnAllDevices (C:\Users\LENOVO\Desktop\PROJETOS.ANO.2020\PROJETOS 02.2020\APLICATIVOS.REACT.NATIVE\app\app\node_modules\@react-native-community\cli-platform-android\build\commands\runAndroid\runOnAllDevices.js:94:5)
at async Command.handleAction (C:\Users\LENOVO\Desktop\PROJETOS.ANO.2020\PROJETOS 02.2020\APLICATIVOS.REACT.NATIVE\app\app\node_modules\react-native\node_modules\@react-native-community\cli\build\index.js:186:9)

[SuporteWebGerente]

error Failed to launch emulator. Reason: No emulators found as an output of emulator -list-avds

The error message implies that you don’t have an emulator running… You can use Android Studio (option AVD Manager) to setup and run one.

[osman144]

So you have the emulator open and its giving this error?

Before you go ahead with these instructions

Do you have any emulators/virtual devices in android studio ? Open android studio --> go to the bottom --> select configure --> Then avd manager to see the devices in your system.

If you have devices listed proceed with these steps

1.) Open android studio. Select ‘open project’. Go to root of your react native project, then go to the android folder. Open the ‘build.gradle’ file with the Android studio ide. It will build the gradle project.

2.) After the IDE opens, the gradle daemon will do its thing and sync and configure the build for you, and the project builds successfully. If it does not, you might have some missing dependencies, or project is not setup correctly.

3.) Open the build tab at the bottom of the IDE.

4.) Select your emulator. Press the play button. Or run ‘react-native run-android’ in your terminal. Watch for changes as you run the project in the emulator. Look for any errors in the build window as it launches up your project