react-native run-android失败

Question

$ react-native run-android
info JS server already running.
info Installing the app...

Task :app:installDebug FAILED
Skipping device 'emulator-5554' (emulator-5554): Device is OFFLINE.

Deprecated Gradle features were used in this build, making it incompatible with Gradle 6.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/5.4.1...:command_line_warnings
27 actionable tasks: 2 executed, 25 up-to-date

FAILURE: Build failed with an exception.

• What went wrong:

Execution failed for task ':app:installDebug'.

com.android.builder.testing.api.DeviceException: No online devices found.

• Try:

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 16s

error Failed to install the app. Make sure you have the Android development environment set up: https://facebook.github.io/re... 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:

Execution failed for task ':app:installDebug'.

com.android.builder.testing.api.DeviceException: No online devices found.

• Try:

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 16s

at checkExecSyncError (child_process.js:601:13)
at execFileSync (child_process.js:621:13)
at runOnAllDevices (C:\Users\chnws\Desktop\react-native\AwesomeProject\node_modules\@react-native-community\cli-platform-android\build\commands\runAndroid\runOnAllDevices.js:75:39)
at buildAndRun (C:\Users\chnws\Desktop\react-native\AwesomeProject\node_modules\@react-native-community\cli-platform-android\build\commands\runAndroid\index.js:137:41)
at then.result (C:\Users\chnws\Desktop\react-native\AwesomeProject\node_modules\@react-native-community\cli-platform-android\build\commands\runAndroid\index.js:103:12)
at <anonymous>
at process._tickCallback (internal/process/next_tick.js:188:7)

Answer 1

ADB DEVICES 未授权 离线 https://blog.csdn.net/u013474...