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Encapsulate network connectivity observing for different API versions.
+ New: Using ConnectivityManager#registerDefaultNetworkCallback for Android Nougat and newer. + NetworkInfo#isConnectedOrConnecting and ConnectivityManager#CONNECTIVITY_ACTION have been deprecated in API level 28. + Related commit: 49a2bbf. + Relates to issue tuxmobil#138.
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13 changes: 0 additions & 13 deletions
13
app/src/main/java/nerd/tuxmobil/fahrplan/congress/net/Connectivity.kt
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95 changes: 95 additions & 0 deletions
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app/src/main/java/nerd/tuxmobil/fahrplan/congress/net/ConnectivityObserver.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| @file:JvmName("ConnectivityObserver") | ||
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| package nerd.tuxmobil.fahrplan.congress.net | ||
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| import android.content.BroadcastReceiver | ||
| import android.content.Context | ||
| import android.content.Intent | ||
| import android.content.IntentFilter | ||
| import android.net.ConnectivityManager | ||
| import android.net.Network | ||
| import android.os.Build | ||
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| /** | ||
| * Observes network connectivity by consulting the [ConnectivityManager]. | ||
| * Observing can run infinitely or automatically be stopped after the first response is received. | ||
| */ | ||
| class ConnectivityObserver @JvmOverloads constructor( | ||
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| val context: Context, | ||
| val onConnectionAvailable: () -> Unit, | ||
| val onConnectionLost: () -> Unit = {}, | ||
| val shouldStopAfterFirstResponse: Boolean = false | ||
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| ) { | ||
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| private val connectivityManager | ||
| get() = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager | ||
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| @Suppress("DEPRECATION") | ||
| private val intentFilter = IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION) | ||
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| private val broadCastReceiver = object : BroadcastReceiver() { | ||
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| @Suppress("DEPRECATION") | ||
| override fun onReceive(context: Context?, intent: Intent?) { | ||
| if (ConnectivityManager.CONNECTIVITY_ACTION != intent?.action) { | ||
| return | ||
| } | ||
| val networkInfo = connectivityManager.activeNetworkInfo | ||
| if (networkInfo != null && networkInfo.isConnectedOrConnecting) { | ||
| onConnectionAvailable.invoke() | ||
| } else { | ||
| onConnectionLost.invoke() | ||
| } | ||
| if (shouldStopAfterFirstResponse) { | ||
| stop() | ||
| } | ||
| } | ||
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| } | ||
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| private lateinit var networkCallback: ConnectivityManager.NetworkCallback | ||
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| init { | ||
| if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) { | ||
| networkCallback = object : ConnectivityManager.NetworkCallback() { | ||
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| override fun onAvailable(network: Network) { | ||
| super.onAvailable(network) | ||
| onConnectionAvailable.invoke() | ||
| if (shouldStopAfterFirstResponse) { | ||
| stop() | ||
| } | ||
| } | ||
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| override fun onLost(network: Network?) { | ||
| super.onLost(network) | ||
| onConnectionLost.invoke() | ||
| if (shouldStopAfterFirstResponse) { | ||
| stop() | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| fun start() { | ||
| if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) { | ||
| // Decouple from component lifecycle, use application context. | ||
| // See: https://developer.android.com/reference/android/content/Context.html#getApplicationContext() | ||
| context.applicationContext.registerReceiver(broadCastReceiver, intentFilter) | ||
| } else { | ||
| connectivityManager.registerDefaultNetworkCallback(networkCallback) | ||
| } | ||
| } | ||
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| fun stop() { | ||
| if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) { | ||
| context.applicationContext.unregisterReceiver(broadCastReceiver) | ||
| } else { | ||
| connectivityManager.unregisterNetworkCallback(networkCallback) | ||
| } | ||
| } | ||
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| } |
43 changes: 0 additions & 43 deletions
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app/src/main/java/nerd/tuxmobil/fahrplan/congress/net/ConnectivityStateReceiver.java
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