125 lines
3.4 KiB
JavaScript
125 lines
3.4 KiB
JavaScript
/**
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* PDA 设备扫码实现（hbyapi 广播协议，基于 QS5502 开发 demo）
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*
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* 设备自身带有物理扫码按键，按下即触发扫描头；
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* 本模块负责「监听扫码结果广播」+「页面扫码按钮主动触发」。
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*
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* 协议（来自 QS5502 demo MainActivity.java）：
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* 触发扫描：发送广播 hbyapi.intent.key_scan_down（模拟按键按下）
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* 接收结果：监听广播 com.qs.scancode，从 extra 键 data 获取扫码字符串
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*
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* 用法（与 scan-*.js 同构）：
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* const impl = new ScanPdaImpl()
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* impl.init()
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* impl.register((code) => {...})
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* impl.startScan() // 主动触发（物理键按下同样会回传，无需手动调用）
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*/
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class ScanPdaImpl {
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constructor() {
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this._main = null
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this._receiver = null
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this._filter = null
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this._callback = null
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this._isScanning = false
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}
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/**
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* 初始化：获取主 Activity 引用
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*/
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init() {
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this._main = plus.android.runtimeMainActivity()
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if (!this._main) {
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throw new Error('[Scan-PDA] 获取主 Activity 失败')
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}
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}
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/**
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* 注册扫码结果回调（注册 com.qs.scancode 广播接收器）
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*/
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register(callback) {
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this._callback = callback
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if (this._receiver) return
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var self = this
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var IntentFilter = plus.android.importClass('android.content.IntentFilter')
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this._filter = new IntentFilter()
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this._filter.addAction('com.qs.scancode')
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this._receiver = plus.android.implements(
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'io.dcloud.feature.internal.reflect.BroadcastReceiver',
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{
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onReceive: function (context, intent) {
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plus.android.importClass(intent)
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var codeStr = intent.getStringExtra('data')
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if (!codeStr) return
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console.log('[Scan-PDA] 扫码结果:', codeStr)
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self._isScanning = false
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if (self._callback) {
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self._callback(codeStr)
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}
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}
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}
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)
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this._main.registerReceiver(this._receiver, this._filter)
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}
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/**
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* 注销监听（页面卸载时调用）
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*/
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unregister() {
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if (this._receiver && this._main) {
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this._main.unregisterReceiver(this._receiver)
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this._receiver = null
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}
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this._callback = null
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}
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/**
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* 开始扫描：发送 key_scan_down 广播主动触发扫描头
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* 设备物理扫码键按下时同样会回传结果，无需手动调用此方法
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*/
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startScan() {
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if (!this._main) return
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var Intent = plus.android.importClass('android.content.Intent')
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var intent = new Intent()
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intent.setAction('hbyapi.intent.key_scan_down')
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this._main.sendBroadcast(intent)
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this._isScanning = true
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console.log('[Scan-PDA] 已触发扫描广播')
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}
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/**
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* 停止扫描
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* demo 仅演示 key_scan_down；部分同协议机型支持 key_scan_up 停止，
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* 这里 try-catch 发送，无副作用
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*/
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stopScan() {
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this._isScanning = false
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if (!this._main) return
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try {
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var Intent = plus.android.importClass('android.content.Intent')
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var intent = new Intent()
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intent.setAction('hbyapi.intent.key_scan_up')
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this._main.sendBroadcast(intent)
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} catch (e) {
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console.log('[Scan-PDA] 发送停止广播失败（可忽略）:', e.message)
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}
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}
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isScanning() {
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return this._isScanning
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}
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/**
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* 完全销毁（应用退出时调用）
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*/
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destroy() {
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this.unregister()
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this._main = null
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this._filter = null
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}
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}
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export default ScanPdaImpl
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