Show vault format in error message if it is not supported

presentation/src/main/java/org/cryptomator/presentation/exception/ExceptionHandlers.kt

@@ -3,7 +3,6 @@ package org.cryptomator.presentation.exception
 import android.content.ActivityNotFoundException
 import android.content.Context
 import org.cryptomator.cryptolib.api.InvalidPassphraseException
-import org.cryptomator.cryptolib.api.UnsupportedVaultFormatException
 import org.cryptomator.domain.di.PerView
 import org.cryptomator.domain.exception.CloudAlreadyExistsException
 import org.cryptomator.domain.exception.CloudNodeAlreadyExistsException
@@ -54,7 +53,6 @@ class ExceptionHandlers @Inject constructor(private val context: Context, defaul
 		staticHandler(HashMismatchUpdateCheckException::class.java, R.string.error_hash_mismatch_update)
 		staticHandler(GeneralUpdateErrorException::class.java, R.string.error_general_update)
 		staticHandler(SSLHandshakePreAndroid5UpdateCheckException::class.java, R.string.error_general_update)
-		staticHandler(UnsupportedVaultFormatException::class.java, R.string.error_vault_version_not_supported)
 		staticHandler(
 			MissingVaultConfigFileException::class.java, String.format(
 				ResourceHelper.getString(R.string.error_vault_config_file_missing_due_to_format_999),
@@ -82,6 +80,7 @@ class ExceptionHandlers @Inject constructor(private val context: Context, defaul
 		exceptionHandlers.add(CancellationExceptionHandler())
 		exceptionHandlers.add(NoSuchVaultExceptionHandler())
 		exceptionHandlers.add(PermissionNotGrantedExceptionHandler())
+		exceptionHandlers.add(UnsupportedVaultFormatExceptionHandler())
 	}
 
 	fun handle(view: View, e: Throwable) {

presentation/src/main/java/org/cryptomator/presentation/exception/UnsupportedVaultFormatExceptionHandler.kt

@@ -0,0 +1,19 @@
+package org.cryptomator.presentation.exception
+
+import org.cryptomator.cryptolib.api.UnsupportedVaultFormatException
+import org.cryptomator.presentation.R
+import org.cryptomator.presentation.ui.activity.view.View
+import org.cryptomator.presentation.util.ResourceHelper.Companion.getString
+import org.cryptomator.util.ExceptionUtil
+
+class UnsupportedVaultFormatExceptionHandler : ExceptionHandler() {
+
+	override fun supports(e: Throwable): Boolean {
+		return ExceptionUtil.contains(e, UnsupportedVaultFormatException::class.java)
+	}
+
+	override fun doHandle(view: View, e: Throwable) {
+		val detectedFormat = ExceptionUtil.extract(e, UnsupportedVaultFormatException::class.java).get().detectedVersion
+		view.showError(String.format(getString(R.string.error_vault_version_not_supported), detectedFormat))
+	}
+}

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

@@ -17,7 +17,7 @@
 	<string name="error_no_network_connection">No network connection</string>
 	<string name="error_invalid_passphrase">Wrong password</string>
 	<string name="error_file_or_folder_exists">A file or folder already exists.</string>
-	<string name="error_vault_version_not_supported">Unsupported vault. This vault has been created with another version of Cryptomator.</string>
+	<string name="error_vault_version_not_supported">Vault version %1$s is unsupported. This vault has been created with an older or newer version of Cryptomator.</string>
 	<string name="error_vault_config_file_missing_due_to_format_999">%1$s file is missing in your vault folder. Make sure that this file exists in your vault folder in the cloud.</string>
 	<string name="error_vault_already_exists">Vault already exists.</string>
 	<string name="error_no_such_file">File does not exist.</string>