Harmony HDC

Reference for controlling HarmonyOS devices with raw hdc commands.

Execution Constraints

• Use hdc -t <device_id> whenever more than one device is connected.
• Confirm screen resolution before coordinate actions: hdc -t DEVICE shell wm size.
• Ask for missing required inputs before executing (device id, bundle/ability, coordinates, file paths).
• Surface actionable stderr on failure (authorization, cable/network, tcp mode).

Device And Server

# Start HDC server
hdc start

# Stop HDC server
hdc kill

# List targets
hdc list targets

# Target a specific device
hdc -t DEVICE <command>

Connection

# Connect over TCP
hdc tconn <ip>:<port>

# Disconnect target
hdc -t DEVICE tdis

Device State

# Device model/system info
hdc -t DEVICE shell param get const.product.model
hdc -t DEVICE shell param get const.ohos.fullname

# Screen size
hdc -t DEVICE shell wm size

# Foreground focus window
hdc -t DEVICE shell hidumper -s WindowManagerService -a '-a'

# Run raw shell command
hdc -t DEVICE shell <command>

App Lifecycle

# List installed bundles
hdc -t DEVICE shell bm dump -a

# Start an ability
hdc -t DEVICE shell aa start -a <ability_name> -b <bundle_name>

# Start by URI
hdc -t DEVICE shell aa start -U <uri>

# Force-stop app by bundle
hdc -t DEVICE shell aa force-stop <bundle_name>

Input Actions

# Tap
hdc -t DEVICE shell uitest uiInput click X Y

# Double tap
hdc -t DEVICE shell uitest uiInput click X Y && sleep 0.1 && hdc -t DEVICE shell uitest uiInput click X Y

# Long press
hdc -t DEVICE shell uitest uiInput longClick X Y

# Swipe
hdc -t DEVICE shell uitest uiInput swipe X1 Y1 X2 Y2 [duration_ms]

# Key event
hdc -t DEVICE shell uitest uiInput keyEvent Back
hdc -t DEVICE shell uitest uiInput keyEvent Home
hdc -t DEVICE shell uitest uiInput keyEvent Enter

Text Input

# Text input (Harmony text input supports UTF-8)
hdc -t DEVICE shell uitest uiInput inputText "hello world"

Screenshot And UI Dump

# Capture screenshot on device
hdc -t DEVICE shell snapshot_display -f /data/local/tmp/screen.jpeg

# Pull screenshot to local
hdc -t DEVICE file recv /data/local/tmp/screen.jpeg ./screen.jpeg

# Dump UI tree (JSON)
hdc -t DEVICE shell uitest dumpLayout -p /data/local/tmp/layout.json
hdc -t DEVICE file recv /data/local/tmp/layout.json ./layout.json

File Transfer

# Push file to device
hdc -t DEVICE file send ./local.file /data/local/tmp/remote.file

# Pull file from device
hdc -t DEVICE file recv /data/local/tmp/remote.file ./remote.file

App Install And Uninstall

# Install HAP
hdc -t DEVICE install /path/to/app.hap

# Install with replace
hdc -t DEVICE install -r /path/to/app.hap

# Uninstall by bundle
hdc -t DEVICE uninstall <bundle_name>

Common KeyEvents

| KeyEvent | Description | |---------|-------------| | Back | Back button | | Home | Home button | | Enter | Enter/confirm | | Power | Power button | | VolumeUp | Volume up | | VolumeDown | Volume down |