debug-android.md

debug android

Usage	Synopsis
Deploy on device, run the app start Chrome DevTools, and attach the debugger	$ tns debug android
Deploy on device, run the app and stop at the first code statement	$ tns debug android --debug-brk [--device <Device ID>] [--debug-port <port>] [--timeout <timeout>]
Deploy in the native emulator, run the app and stop at the first code statement	$ tns debug android --debug-brk --emulator [<Emulator Options>] [--timeout <timeout>]
Attach the debug tools to a running app on device	$ tns debug android --start [--device <Device ID>] [--debug-port <port>] [--timeout <timeout>]
Attach the debug tools to a running app in the native emulator	$ tns debug android --start --emulator [<Emulator Options>] [--timeout <timeout>]
Detach the debug tools	$ tns debug android --stop

Prepares, builds and deploys the project when necessary. Debugs your project on a connected device or emulator. While debugging, prints the output from the application in the console and watches for changes in your code. Once a change is detected, it synchronizes the change with all selected devices and restarts/refreshes the application.

Options

• --device - Specifies a connected device on which to debug the app.
• --emulator - Specifies that you want to debug the app in the native Android emulator from the Android SDK.
• --debug-brk - Prepares, builds and deploys the application package on a device or in an emulator, launches the Chrome DevTools of your Chrome browser and stops at the first code statement.
• --start - Attaches the debug tools to a deployed and running app.
• --stop - Detaches the debug tools.
• --debug-port - Sets a new port on which to attach the debug tools.
• --timeout - Sets the number of seconds that the NativeScript CLI will wait for the debugger to boot. If not set, the default timeout is 90 seconds.
• --no-watch - If set, changes in your code will not be reflected during the execution of this command.
• --clean - If set, forces rebuilding the native application.

Attributes

• <Device ID> is the index or name of the target device as listed by $ tns device
• <Port> is an accessible port on the device to which you want to attach the debugging tools.
• <Emulator Options> is any valid combination of options as listed by $ tns help emulate android

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Prerequisites

• You must have Chrome installed on your system.
  If you are using a non-standard named Chrome app on an OS X system (for example, a nightly Canary update), you need to set this name in the ANDROID_DEBUG_UI_MAC setting in the NativeScript [config.json](file:///<%= #{config.getConfigPath(config)} %>).

Related Commands

Command	Description
build android	Builds the project for Android and produces an APK that you can manually deploy on device or in the native emulator.
build ios	Builds the project for iOS and produces an APP or IPA that you can manually deploy in the iOS Simulator or on device, respectively.
build	Builds the project for the selected target platform and produces an application package that you can manually deploy on device or in the native emulator.
debug ios	Debugs your project on a connected iOS device or in a native emulator.
debug	Debugs your project on a connected device or in a native emulator.
deploy	Builds and deploys the project to a connected physical or virtual device.
run android	Runs your project on a connected Android device or in a native Android emulator, if configured.
run ios	Runs your project on a connected iOS device or in the iOS Simulator, if configured.
run	Runs your project on a connected device or in the native emulator for the selected platform.
test init	Configures your project for unit testing with a selected framework.
test android	Runs the tests in your project on Android devices or native emulators.
test ios	Runs the tests in your project on iOS devices or the iOS Simulator.
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