Fix crash when starting app with no available network.

matrix-sdk-android/src/rustCrypto/java/org/matrix/android/sdk/internal/crypto/RustCryptoService.kt

@@ -196,9 +196,7 @@ internal class RustCryptoService @Inject constructor(
     override suspend fun fetchDevicesList(): List<DeviceInfo> {
         val devicesList: List<DeviceInfo>
         withContext(coroutineDispatchers.io) {
-            devicesList = tryOrNull {
-                getDevicesTask.execute(Unit).devices
-            }.orEmpty()
+            devicesList = getDevicesTask.execute(Unit).devices.orEmpty()
             cryptoStore.saveMyDevicesInfo(devicesList)
         }
         return devicesList
@@ -247,7 +245,7 @@ internal class RustCryptoService @Inject constructor(
         cryptoCoroutineScope.launch(coroutineDispatchers.io) {
             cryptoStore.open()
             // Just update
-            fetchDevicesList()
+            tryOrNull { fetchDevicesList() }
             cryptoStore.tidyUpDataBase()
         }
     }

vector/src/main/java/im/vector/app/features/home/UnknownDeviceDetectorSharedViewModel.kt

@@ -40,6 +40,7 @@ import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.flow.sample
 import kotlinx.coroutines.launch
 import org.matrix.android.sdk.api.extensions.orFalse
+import org.matrix.android.sdk.api.extensions.tryOrNull
 import org.matrix.android.sdk.api.session.Session
 import org.matrix.android.sdk.api.session.crypto.model.DeviceInfo
 import org.matrix.android.sdk.api.session.getUserOrDefault
@@ -101,7 +102,7 @@ class UnknownDeviceDetectorSharedViewModel @AssistedInject constructor(
                 session.flow().liveUserCryptoDevices(session.myUserId),
                 session.flow().liveMyDevicesInfo(),
                 session.flow().liveCrossSigningPrivateKeys(),
-                ) { cryptoList, infoList, pInfo ->
+        ) { cryptoList, infoList, pInfo ->
             Timber.v("## Detector trigger ${cryptoList.map { "${it.deviceId} ${it.trustLevel}" }}")
             Timber.v("## Detector trigger canCrossSign ${pInfo.get().selfSigned != null}")
 
@@ -146,13 +147,13 @@ class UnknownDeviceDetectorSharedViewModel @AssistedInject constructor(
                 .sample(5_000)
                 .onEach {
                     // If we have a new crypto device change, we might want to trigger refresh of device info
-                    session.cryptoService().fetchDevicesList()
+                    tryOrNull { session.cryptoService().fetchDevicesList() }
                 }
                 .launchIn(viewModelScope)
 
         // trigger a refresh of lastSeen / last Ip
         viewModelScope.launch {
-            session.cryptoService().fetchDevicesList()
+            tryOrNull { session.cryptoService().fetchDevicesList() }
         }
     }
 

vector/src/main/java/im/vector/app/features/settings/VectorSettingsSecurityPrivacyFragment.kt

@@ -76,6 +76,7 @@ import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import me.gujun.android.span.span
 import org.matrix.android.sdk.api.extensions.getFingerprintHumanReadable
+import org.matrix.android.sdk.api.extensions.tryOrNull
 import org.matrix.android.sdk.api.raw.RawService
 import org.matrix.android.sdk.api.session.crypto.crosssigning.isVerified
 import org.matrix.android.sdk.api.session.crypto.model.DeviceInfo
@@ -646,9 +647,11 @@ class VectorSettingsSecurityPrivacyFragment :
             }
         }
         // TODO Move to a ViewModel...
-        val devicesList = session.cryptoService().fetchDevicesList()
-        withContext(Dispatchers.Main) {
-            refreshCryptographyPreference(devicesList)
+        val devicesList = tryOrNull { session.cryptoService().fetchDevicesList() }
+        devicesList?.let {
+            withContext(Dispatchers.Main) {
+                refreshCryptographyPreference(it)
+            }
         }
     }
 }

vector/src/main/java/im/vector/app/features/settings/devices/DevicesViewModel.kt

@@ -52,6 +52,7 @@ import org.matrix.android.sdk.api.auth.data.LoginFlowTypes
 import org.matrix.android.sdk.api.auth.registration.RegistrationFlowResponse
 import org.matrix.android.sdk.api.auth.registration.nextUncompletedStage
 import org.matrix.android.sdk.api.extensions.orFalse
+import org.matrix.android.sdk.api.extensions.tryOrNull
 import org.matrix.android.sdk.api.failure.Failure
 import org.matrix.android.sdk.api.session.Session
 import org.matrix.android.sdk.api.session.crypto.model.CryptoDeviceInfo
@@ -190,7 +191,7 @@ class DevicesViewModel @AssistedInject constructor(
                 .sample(5_000)
                 .onEach {
                     // If we have a new crypto device change, we might want to trigger refresh of device info
-                    session.cryptoService().fetchDevicesList()
+                    tryOrNull { session.cryptoService().fetchDevicesList() }
                 }
                 .launchIn(viewModelScope)
 
@@ -203,7 +204,7 @@ class DevicesViewModel @AssistedInject constructor(
 
         refreshSource.stream().throttleFirst(4_000)
                 .onEach {
-                    session.cryptoService().fetchDevicesList()
+                    tryOrNull { session.cryptoService().fetchDevicesList() }
                     session.cryptoService().downloadKeysIfNeeded(listOf(session.myUserId), true)
                 }
                 .launchIn(viewModelScope)

vector/src/main/java/im/vector/app/features/settings/devices/v2/RefreshDevicesOnCryptoDevicesChangeUseCase.kt

@@ -22,6 +22,7 @@ import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.flow.sample
+import org.matrix.android.sdk.api.extensions.tryOrNull
 import org.matrix.android.sdk.flow.flow
 import javax.inject.Inject
 import kotlin.time.Duration.Companion.seconds
@@ -40,7 +41,7 @@ class RefreshDevicesOnCryptoDevicesChangeUseCase @Inject constructor(
                             .sample(samplingPeriodMs)
                             .onEach {
                                 // If we have a new crypto device change, we might want to trigger refresh of device info
-                                session.cryptoService().fetchDevicesList()
+                                tryOrNull { session.cryptoService().fetchDevicesList() }
                             }
                             .collect()
                 }

vector/src/main/java/im/vector/app/features/settings/devices/v2/RefreshDevicesUseCase.kt

@@ -17,6 +17,7 @@
 package im.vector.app.features.settings.devices.v2
 
 import im.vector.app.core.di.ActiveSessionHolder
+import org.matrix.android.sdk.api.extensions.tryOrNull
 import javax.inject.Inject
 
 class RefreshDevicesUseCase @Inject constructor(
@@ -24,7 +25,7 @@ class RefreshDevicesUseCase @Inject constructor(
 ) {
     suspend fun execute() {
         activeSessionHolder.getSafeActiveSession()?.let { session ->
-            session.cryptoService().fetchDevicesList()
+            tryOrNull { session.cryptoService().fetchDevicesList() }
             session.cryptoService().downloadKeysIfNeeded(listOf(session.myUserId), true)
         }
     }