Remove warnings for download service, use new standard for checking network

app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadService.kt

@@ -5,15 +5,17 @@ import android.app.Service
 import android.content.Context
 import android.content.Intent
 import android.net.ConnectivityManager
-import android.net.NetworkInfo.State.CONNECTED
-import android.net.NetworkInfo.State.DISCONNECTED
+import android.net.Network
+import android.net.NetworkCapabilities
+import android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET
+import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED
+import android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED
+import android.net.NetworkRequest
 import android.os.Build
 import android.os.IBinder
 import android.os.PowerManager
 import androidx.core.app.NotificationCompat
 import androidx.work.NetworkType
-import com.github.pwittchen.reactivenetwork.library.Connectivity
-import com.github.pwittchen.reactivenetwork.library.ReactiveNetwork
 import com.jakewharton.rxrelay.BehaviorRelay
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.library.LibraryUpdateService
@@ -24,9 +26,6 @@ import eu.kanade.tachiyomi.util.lang.plusAssign
 import eu.kanade.tachiyomi.util.system.connectivityManager
 import eu.kanade.tachiyomi.util.system.isServiceRunning
 import eu.kanade.tachiyomi.util.system.powerManager
-import eu.kanade.tachiyomi.util.system.toast
-import rx.android.schedulers.AndroidSchedulers
-import rx.schedulers.Schedulers
 import rx.subscriptions.CompositeSubscription
 import uy.kohesive.injekt.injectLazy
 
@@ -118,6 +117,27 @@ class DownloadService : Service() {
      */
     private lateinit var subscriptions: CompositeSubscription
 
+    private val networkCallback = object : ConnectivityManager.NetworkCallback() {
+        override fun onAvailable(network: Network) {
+            onNetworkStateChanged()
+        }
+
+        override fun onLost(network: Network) {
+            onNetworkStateChanged()
+        }
+
+        override fun onCapabilitiesChanged(
+            network: Network,
+            networkCapabilities: NetworkCapabilities
+        ) {
+            onNetworkStateChanged()
+        }
+
+        override fun onUnavailable() {
+            onNetworkStateChanged()
+        }
+    }
+
     /**
      * Called when the service is created.
      */
@@ -137,6 +157,7 @@ class DownloadService : Service() {
     override fun onDestroy() {
         runningRelay.call(false)
         subscriptions.unsubscribe()
+        connectivityManager.unregisterNetworkCallback(networkCallback)
         downloadManager.stopDownloads()
         callListeners(downloadManager.hasQueue())
         wakeLock.releaseIfNeeded()
@@ -167,41 +188,33 @@ class DownloadService : Service() {
      * @see onNetworkStateChanged
      */
     private fun listenNetworkChanges() {
-        subscriptions += ReactiveNetwork.observeNetworkConnectivity(applicationContext)
-            .subscribeOn(Schedulers.io())
-            .observeOn(AndroidSchedulers.mainThread())
-            .subscribe(
-                { state ->
-                    onNetworkStateChanged(state)
-                },
-                {
-                    toast(R.string.could_not_download_chapter_can_try_again)
-                    stopSelf()
-                }
-            )
+        onNetworkStateChanged()
+        val networkChangeFilter = NetworkRequest.Builder().build()
+        connectivityManager.registerNetworkCallback(networkChangeFilter, networkCallback)
+        return
     }
 
     /**
      * Called when the network state changes.
      *
-     * @param connectivity the new network state.
      */
-    private fun onNetworkStateChanged(connectivity: Connectivity) {
-        when (connectivity.state) {
-            CONNECTED -> {
-                if (preferences.downloadOnlyOverWifi() && connectivityManager.activeNetworkInfo?.type != ConnectivityManager.TYPE_WIFI) {
+    private fun onNetworkStateChanged() {
+        val manager = connectivityManager
+        val networkCapabilities = manager.getNetworkCapabilities(manager.activeNetwork)
+        if (networkCapabilities == null || !(networkCapabilities.hasCapability(NET_CAPABILITY_INTERNET) &&
+                networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED))) {
+            downloadManager.stopDownloads(getString(R.string.no_network_connection))
+            return
+        }
+        if (preferences.downloadOnlyOverWifi() &&
+            !networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED)
+        ) {
             downloadManager.stopDownloads(getString(R.string.no_wifi_connection))
         } else {
             val started = downloadManager.startDownloads()
             if (!started) stopSelf()
         }
     }
-            DISCONNECTED -> {
-                downloadManager.stopDownloads(getString(R.string.no_network_connection))
-            }
-            else -> { /* Do nothing */ }
-        }
-    }
 
     /**
      * Listens to downloader status. Enables or disables the wake lock depending on the status.

app/src/main/java/eu/kanade/tachiyomi/data/download/Downloader.kt

@@ -112,7 +112,9 @@ class Downloader(
      * @return true if the downloader is started, false otherwise.
      */
     fun start(): Boolean {
-        if (isRunning || queue.isEmpty()) return false
+        if (isRunning || queue.isEmpty()) {
+            return isRunning
+        }
         notifier.paused = false
         if (!subscriptions.hasSubscriptions()) initializeSubscriptions()
 

app/src/main/res/values/strings.xml

@@ -859,7 +859,6 @@
     <string name="nothing_is_downloading">Nothing is currently downloading</string>
     <string name="download_complete">Download complete</string>
     <string name="download_error">Download error</string>
-    <string name="could_not_download_chapter_can_try_again">Could not download chapters. You can try again in the downloads section</string>
     <string name="manage_whats_downloading">Manage what\'s downloading</string>
     <string name="visit_recents_for_download_queue">Visit the recents tab to access the download
         queue. You can also double tap or press and hold for quicker access</string>