android - Android > 如何获取双卡设备中两张卡的服务状态？

Question

我需要它用于 API 22 及更高版本。我看到我们有telephonyManager.getServiceState- 但我不知道如何为 sim1 和 sim2 获得它。我们也有 CellInfo.serviceState - 但它仅来自 API 28。

如何得到它？我不需要任何听众，我只想在特定时间获取服务状态

请帮忙！

Answer 1

经过一些研究，实施了这个解决方案：

@SuppressLint("MissingPermission", "NewApi")
    private fun getServiceState(simSlotNmb: Int): String {
        try {
            val serviceState: ServiceState?
            if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                serviceState = if (subscriptionManager != null && subscriptionManager!!.activeSubscriptionInfoCount > 1) {
                        val subsId =
                            subscriptionManager!!.getActiveSubscriptionInfoForSimSlotIndex(
                                simSlotNmb
                            ).subscriptionId
                        val telephonyManager =
                            (context.getSystemService(Context.TELEPHONY_SERVICE) as TelephonyManager)
                                .createForSubscriptionId(subsId)

                        telephonyManager.serviceState
                    } else {
                        telephonyManager.serviceState
                    }
            } else if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.N && subscriptionManager != null
                      && subscriptionManager!!.activeSubscriptionInfoCount > 1) {
                val subsId = subscriptionManager!!.getActiveSubscriptionInfoForSimSlotIndex(simSlotNmb).subscriptionId
                val telephonyManagerForSlot
                        = (context.getSystemService(Context.TELEPHONY_SERVICE) as TelephonyManager)
                        .createForSubscriptionId(subsId)
                telephonyManagerForSlot.listen(phoneStateListener, PhoneStateListener.LISTEN_SERVICE_STATE)
                telephonyManagerForSlot.listen(phoneStateListener, PhoneStateListener.LISTEN_NONE)
                serviceState = latestServiceState
            } else if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1 && subscriptionManager != null
                && subscriptionManager!!.activeSubscriptionInfoCount > 1) {
                val noConnectionDbm = -110
                val dbm = getSignalDbm(simSlotNmb)
                serviceState = ServiceState()
                if(dbm < noConnectionDbm) {
                    serviceState.state = ServiceState.STATE_OUT_OF_SERVICE
                } else {
                    serviceState.state = ServiceState.STATE_IN_SERVICE
                }
            } else {
                telephonyManager.listen(phoneStateListener, PhoneStateListener.LISTEN_SERVICE_STATE)
                telephonyManager.listen(phoneStateListener, PhoneStateListener.LISTEN_NONE)
                serviceState = latestServiceState
            }
            return when (serviceState?.state) {
                ServiceState.STATE_IN_SERVICE -> "in service"
                ServiceState.STATE_EMERGENCY_ONLY -> "emergency only"
                else -> "out of service"
            }
        } catch (exc: Exception) {
            exc.printStackTrace()

            return when(exc) {
                is ArrayIndexOutOfBoundsException -> "out of service"
                else -> Constants.error
            }
        }
    }