149 lines
4.1 KiB
Kotlin
149 lines
4.1 KiB
Kotlin
package jp.juggler.subwaytooter.util
|
|
|
|
import android.content.Context
|
|
import android.net.*
|
|
import android.os.Build
|
|
import jp.juggler.util.LogCategory
|
|
import java.lang.RuntimeException
|
|
|
|
class NetworkStateTracker(
|
|
val context : Context
|
|
|
|
) : ConnectivityManager.NetworkCallback() {
|
|
|
|
|
|
companion object {
|
|
private val log = LogCategory("NetworkStateTracker")
|
|
}
|
|
|
|
private val cm = context.getSystemService(Context.CONNECTIVITY_SERVICE)
|
|
as? ConnectivityManager
|
|
|
|
private var lastNetwork : Network? = null
|
|
|
|
init {
|
|
if(Build.VERSION.SDK_INT >= 28) {
|
|
cm?.registerDefaultNetworkCallback(this)
|
|
lastNetwork = cm?.activeNetwork
|
|
}
|
|
}
|
|
|
|
private fun <T> tryOrNull(block : () -> T?) : T? = try {
|
|
block()
|
|
} catch(ex : Throwable) {
|
|
null
|
|
}
|
|
|
|
@Suppress("DEPRECATION")
|
|
private fun NetworkInfo?.getStateString() =
|
|
if(this == null) {
|
|
"null"
|
|
} else {
|
|
// API 28 以上で typeName と state がdeprecated になっている
|
|
"${tryOrNull { this.typeName }} ${tryOrNull { this.subtypeName }} ${tryOrNull { this.state }} ${tryOrNull { this.detailedState }}"
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////
|
|
// NetworkCallback
|
|
|
|
// Called when the framework connects and has declared a new network ready for use.
|
|
// 準備ができた
|
|
override fun onAvailable(network : Network?) {
|
|
val ni : NetworkInfo? = try {
|
|
cm?.getNetworkInfo(network)
|
|
} catch(ex : Throwable) {
|
|
null
|
|
}
|
|
log.d("onAvailable ${ni.getStateString()}")
|
|
super.onAvailable(network)
|
|
this.lastNetwork = network
|
|
}
|
|
|
|
// Called when the network the framework connected to for this request changes capabilities but still satisfies the stated need.
|
|
// 接続完了し、ネットワークが変わったあと
|
|
override fun onCapabilitiesChanged(
|
|
network : Network?,
|
|
networkCapabilities : NetworkCapabilities?
|
|
) {
|
|
val ni : NetworkInfo? = try {
|
|
cm?.getNetworkInfo(network)
|
|
} catch(ex : Throwable) {
|
|
null
|
|
}
|
|
log.d("onCapabilitiesChanged ${ni.getStateString()}")
|
|
super.onCapabilitiesChanged(network, networkCapabilities)
|
|
this.lastNetwork = network
|
|
}
|
|
|
|
// Called when the network the framework connected to for this request changes LinkProperties.
|
|
override fun onLinkPropertiesChanged(network : Network?, linkProperties : LinkProperties?) {
|
|
val ni : NetworkInfo? = try {
|
|
cm?.getNetworkInfo(network)
|
|
} catch(ex : Throwable) {
|
|
null
|
|
}
|
|
log.d("onLinkPropertiesChanged ${ni.getStateString()}")
|
|
super.onLinkPropertiesChanged(network, linkProperties)
|
|
this.lastNetwork = network
|
|
}
|
|
|
|
override fun onLosing(network : Network?, maxMsToLive : Int) {
|
|
val ni : NetworkInfo? = try {
|
|
cm?.getNetworkInfo(network)
|
|
} catch(ex : Throwable) {
|
|
null
|
|
}
|
|
log.d("onLosing ${ni.getStateString()}")
|
|
super.onLosing(network, maxMsToLive)
|
|
this.lastNetwork = null
|
|
}
|
|
|
|
// Called when the framework has a hard loss of the network or when the graceful failure ends.
|
|
override fun onLost(network : Network?) {
|
|
val ni : NetworkInfo? = try {
|
|
cm?.getNetworkInfo(network)
|
|
} catch(ex : Throwable) {
|
|
null
|
|
}
|
|
log.d("onLost ${ni.getStateString()}")
|
|
super.onLost(network)
|
|
this.lastNetwork = null
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////
|
|
|
|
val isConnected : Boolean
|
|
get() {
|
|
return if(cm == null) {
|
|
log.e("isConnected: missing ConnectivityManager")
|
|
true
|
|
|
|
} else {
|
|
val activeNetworkInfo = cm.activeNetworkInfo
|
|
if(activeNetworkInfo == null) {
|
|
log.e("isConnected: missing activeNetworkInfo")
|
|
false
|
|
} else if(! activeNetworkInfo.isConnected) {
|
|
log.e("not connected: ${activeNetworkInfo.getStateString()}")
|
|
false
|
|
} else {
|
|
true
|
|
}
|
|
}
|
|
}
|
|
|
|
fun checkNetworkState() {
|
|
|
|
if(cm == null) {
|
|
log.e("isConnected: missing ConnectivityManager")
|
|
} else {
|
|
val activeNetworkInfo = cm.activeNetworkInfo
|
|
?: throw RuntimeException("missing activeNetworkInfo")
|
|
|
|
if(activeNetworkInfo.isConnected) return
|
|
|
|
throw RuntimeException("not connected. ${activeNetworkInfo.getStateString()}")
|
|
|
|
}
|
|
}
|
|
} |