Created
October 22, 2021 09:48
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CheckRealtimeNetwork
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class NetworkConnection(private val context: Context) : LiveData<Boolean>() { | |
private var connectivityManager: ConnectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager | |
private var networkCallback: ConnectivityManager.NetworkCallback? = null | |
override fun onActive() { | |
super.onActive() | |
updateConnection() | |
when{ | |
Build.VERSION.SDK_INT >= Build.VERSION_CODES.N -> { | |
connectivityManager.registerDefaultNetworkCallback(connectivityManagerCallback()) | |
} | |
Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP -> { | |
lollipopNetworkRequest() | |
} | |
else -> { | |
context.registerReceiver(networkReceiver, IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION)) | |
} | |
} | |
} | |
override fun onInactive() { | |
super.onInactive() | |
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){ | |
networkCallback?.let { connectivityManager.unregisterNetworkCallback(it) } | |
}else{ | |
context.unregisterReceiver(networkReceiver) | |
} | |
} | |
private val networkReceiver = object : BroadcastReceiver(){ | |
override fun onReceive(context: Context?, intent: Intent?) { | |
updateConnection() | |
} | |
} | |
private fun updateConnection() { | |
val activeNetwork = connectivityManager.activeNetworkInfo | |
postValue(activeNetwork?.isConnected == true) | |
} | |
@RequiresApi(Build.VERSION_CODES.LOLLIPOP) | |
private fun lollipopNetworkRequest(){ | |
val requestBuilder = NetworkRequest.Builder() | |
.addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR) | |
.addTransportType(NetworkCapabilities.TRANSPORT_WIFI) | |
.addTransportType(NetworkCapabilities.TRANSPORT_ETHERNET) | |
connectivityManager.registerNetworkCallback(requestBuilder.build(), connectivityManagerCallback()) | |
} | |
private fun connectivityManagerCallback() : ConnectivityManager.NetworkCallback{ | |
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP){ | |
networkCallback = object : ConnectivityManager.NetworkCallback(){ | |
override fun onLost(network: Network) { | |
super.onLost(network) | |
postValue(false) | |
} | |
override fun onAvailable(network: Network) { | |
super.onAvailable(network) | |
postValue(true) | |
} | |
} | |
return networkCallback as ConnectivityManager.NetworkCallback | |
}else{ | |
throw IllegalAccessError("Error") | |
} | |
} | |
} | |
val networkConnection = NetworkConnection(this@MainActivity) | |
networkConnection.observe(this@MainActivity, Observer {connect -> | |
if(!connect){ | |
flagConnection = true | |
txv_connection.visibility = View.VISIBLE | |
txv_connection.text = getString(R.string.label_connection_inactive) | |
txv_connection.setBackgroundColor(ContextCompat.getColor(this@MainActivity, R.color.color_red_f2)) | |
}else if(connect && flagConnection){ | |
txv_connection.visibility = View.VISIBLE | |
txv_connection.text = getString(R.string.label_connection_active) | |
txv_connection.setBackgroundColor(ContextCompat.getColor(this@MainActivity, R.color.color_green_02)) | |
Handler(Looper.getMainLooper()).postDelayed({ | |
txv_connection.visibility = View.GONE | |
}, 3000) | |
} | |
}) |
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