---
name: android_input_keyevent
kind: function
lang: bash
domain: infra
version: "1.0.0"
purity: impure
signature: "android_input_keyevent([--serial <S>] key: string)"
description: "Send key event via adb shell input keyevent. Accepts aliases (BACK, HOME, POWER, ENTER, MENU, RECENT_APPS, VOLUME_UP, VOLUME_DOWN), raw numeric codes, or explicit KEYCODE_* names."
tags: [android, adb, input, keyevent, ui-test]
params:
  - name: "--serial <S>"
    desc: "Optional target device/emulator serial. If omitted, adb_pick_serial resolves the single connected device."
  - name: "key"
    desc: "Keycode: short alias (BACK/HOME/POWER/ENTER/MENU/RECENT_APPS/VOLUME_UP/VOLUME_DOWN), raw number (e.g. 4, 26), or explicit KEYCODE_* name."
output: "Stdout 'key: <code> on <serial>'."
uses_functions: ["adb_wsl_bash_infra"]
uses_types: []
returns: []
returns_optional: false
error_type: "error_go_core"
imports: []
tested: false
tests: []
test_file_path: ""
file_path: "bash/functions/infra/android_input_keyevent.sh"
notes: "Lista completa de keycodes: https://developer.android.com/reference/android/view/KeyEvent. Exit 3 si adb_pick_serial falla (ningun device o ambiguo sin --serial)."
---

## Ejemplo

```bash
# Pulsar BACK en el unico device conectado
android_input_keyevent BACK

# Pulsar HOME en un emulador especifico
android_input_keyevent --serial emulator-5554 HOME

# Codigo numerico directo
android_input_keyevent 26   # POWER

# KEYCODE_* explicito
android_input_keyevent KEYCODE_DPAD_CENTER
```

## Notas

Aliases resueltos internamente:

| Alias        | KEYCODE               |
|--------------|-----------------------|
| BACK         | KEYCODE_BACK          |
| HOME         | KEYCODE_HOME          |
| POWER        | KEYCODE_POWER         |
| ENTER        | KEYCODE_ENTER         |
| MENU         | KEYCODE_MENU          |
| RECENT_APPS  | KEYCODE_APP_SWITCH    |
| VOLUME_UP    | KEYCODE_VOLUME_UP     |
| VOLUME_DOWN  | KEYCODE_VOLUME_DOWN   |

Si el argumento no coincide con ningun alias y no es numerico, se construye `KEYCODE_<UPPER>` para pasarlo directo a `adb shell input keyevent`.

Exit codes: 1 = keycode vacio, 3 = fallo de `adb_pick_serial` (ningun device o ambiguo).