Mit ML Kit für iOS die Sprache eines Textes ermitteln
Mit Sammlungen den Überblick behalten
Sie können Inhalte basierend auf Ihren Einstellungen speichern und kategorisieren.
Sie können ML Kit verwenden, um die Sprache eines Textstrings zu ermitteln. Sie können
die wahrscheinlichste Sprache der Zeichenfolge sowie Konfidenzwerte für alle
der möglichen Sprachen der Zeichenfolge.
ML Kit erkennt Text in über 100 verschiedenen Sprachen in eigenen Skripts.
Außerdem ist romanisierter Text für Arabisch, Bulgarisch, Chinesisch,
Griechisch, Hindi, Japanisch und Russisch. Weitere Informationen finden Sie in der
vollständige Liste der unterstützten Sprachen und Skripts
Jetzt ausprobieren
Probieren Sie die Beispiel-App aus, um
sehen Sie sich ein Anwendungsbeispiel für diese API an.
Hinweis
Fügen Sie die folgenden ML Kit-Pods in Ihre Podfile-Datei ein:
pod 'GoogleMLKit/LanguageID', '8.0.0'
Nachdem Sie die Pods Ihres Projekts installiert oder aktualisiert haben, öffnen Sie Ihr Xcode-Projekt mit dem
.xcworkspace ML Kit wird ab Xcode-Version 12.4 unterstützt.
Sprache eines Strings ermitteln
Um die Sprache eines Strings zu ermitteln, rufen Sie eine Instanz von
LanguageIdentification und übergeben Sie den String an den
identifyLanguage(for:)-Methode.
Beispiel:
Swift
letlanguageId=NaturalLanguage.languageIdentification()languageId.identifyLanguage(for:text){(languageCode,error)inifleterror=error{print("Failed with error: \(error)")return}ifletlanguageCode=languageCode,languageCode!="und"{print("Identified Language: \(languageCode)")}else{print("No language was identified")}}
Objective-C
MLKLanguageIdentification*languageId=[MLKLanguageIdentificationlanguageIdentification];[languageIdidentifyLanguageForText:textcompletion:^(NSString*_NullablelanguageCode,NSError*_Nullableerror){if(error!=nil){NSLog(@"Failed with error: %@",error.localizedDescription);return;}if(![languageCodeisEqualToString:@"und"]){NSLog(@"Identified Language: %@",languageCode);}else{NSLog(@"No language was identified");}}];
Wenn der Aufruf erfolgreich ist, wird ein
Der BCP-47-Sprachcode lautet
wird an den Abschluss-Handler übergeben und gibt die Sprache des Textes an. Falls nein
Sprache sicher erkannt werden konnte, wird der Code und (unbestimmt) übergeben.
Standardmäßig gibt ML Kit nur dann einen Nicht-und-Wert zurück, wenn es die
Sprache mit einem Konfidenzwert von mindestens 0,5. Sie können diesen Grenzwert ändern
indem Sie ein LanguageIdentificationOptions-Objekt an
languageIdentification(options:):
Um die Konfidenzwerte der wahrscheinlichsten Sprachen eines Strings zu erhalten, erhalten Sie einen
Instanz von LanguageIdentification und übergeben Sie den String dann an den
identifyPossibleLanguages(for:)-Methode.
Beispiel:
Swift
letlanguageId=NaturalLanguage.languageIdentification()languageId.identifyPossibleLanguages(for:text){(identifiedLanguages,error)inifleterror=error{print("Failed with error: \(error)")return}guardletidentifiedLanguages=identifiedLanguages,!identifiedLanguages.isEmpty,identifiedLanguages[0].languageCode!="und"else{print("No language was identified")return}print("Identified Languages:\n"+identifiedLanguages.map{String(format:"(%@, %.2f)",$0.languageCode,$0.confidence)}.joined(separator:"\n"))}
Objective-C
MLKLanguageIdentification*languageId=[MLKLanguageIdentificationlanguageIdentification];[languageIdidentifyPossibleLanguagesForText:textcompletion:^(NSArray*_NonnullidentifiedLanguages,NSError*_Nullableerror){if(error!=nil){NSLog(@"Failed with error: %@",error.localizedDescription);return;}if(identifiedLanguages.count==1&&[identifiedLanguages[0].languageCodeisEqualToString:@"und"]){NSLog(@"No language was identified");return;}NSMutableString*outputText=[NSMutableStringstringWithFormat:@"Identified Languages:"];for(MLKIdentifiedLanguage*languageinidentifiedLanguages){[outputTextappendFormat:@"\n(%@, %.2f)",language.languageCode,language.confidence];}NSLog(outputText);}];
Wenn der Aufruf erfolgreich ist, wird eine Liste mit IdentifiedLanguage-Objekten an den
Continuation-Handler. Aus jedem Objekt können Sie den BCP-47-Code der Sprache abrufen.
und die Wahrscheinlichkeit,
dass der String in dieser Sprache ist. Beachten Sie, dass
zeigen diese Werte die Sicherheit an, dass sich der gesamte String im angegebenen
Sprache; ML Kit erkennt nicht mehrere Sprachen in einem einzelnen String.
Standardmäßig gibt ML Kit nur Sprachen mit Konfidenzwerten von mindestens
0:01. Sie können diesen Grenzwert ändern, indem Sie eine
LanguageIdentificationOptions-Objekt für languageIdentification(options:):
[[["Leicht verständlich","easyToUnderstand","thumb-up"],["Mein Problem wurde gelöst","solvedMyProblem","thumb-up"],["Sonstiges","otherUp","thumb-up"]],[["Benötigte Informationen nicht gefunden","missingTheInformationINeed","thumb-down"],["Zu umständlich/zu viele Schritte","tooComplicatedTooManySteps","thumb-down"],["Nicht mehr aktuell","outOfDate","thumb-down"],["Problem mit der Übersetzung","translationIssue","thumb-down"],["Problem mit Beispielen/Code","samplesCodeIssue","thumb-down"],["Sonstiges","otherDown","thumb-down"]],["Zuletzt aktualisiert: 2025-09-04 (UTC)."],[[["\u003cp\u003eML Kit can identify the language of a string of text and provide confidence scores for all possible languages, supporting over 100 languages.\u003c/p\u003e\n"],["\u003cp\u003eYou can get the most likely language of a string using the \u003ccode\u003eidentifyLanguage(for:)\u003c/code\u003e method or get confidence values for possible languages using the \u003ccode\u003eidentifyPossibleLanguages(for:)\u003c/code\u003e method.\u003c/p\u003e\n"],["\u003cp\u003eAdjust the confidence threshold for language identification by passing a \u003ccode\u003eLanguageIdentificationOptions\u003c/code\u003e object to \u003ccode\u003elanguageIdentification(options:)\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eTo use ML Kit for language identification, include the \u003ccode\u003eGoogleMLKit/LanguageID\u003c/code\u003e pod in your Podfile and ensure your Xcode version is 12.4 or greater.\u003c/p\u003e\n"]]],["ML Kit can identify the language of text strings, supporting over 100 languages and romanized text for select languages. To use it, add the `GoogleMLKit/LanguageID` pod to your project. The `identifyLanguage(for:)` method returns the most likely language code, or \"und\" if undetermined. The method `identifyPossibleLanguages(for:)` provides confidence scores for multiple potential languages. Both methods allow setting a confidence threshold, with the default at 0.5 and 0.01 respectively.\n"],null,["You can use ML Kit to identify the language of a string of text. You can\nget the string's most likely language as well as confidence scores for all of the\nstring's possible languages.\n\nML Kit recognizes text in more than 100 different languages in their native scripts.\nIn addition, romanized text can be recognized for Arabic, Bulgarian, Chinese,\nGreek, Hindi, Japanese, and Russian. See the\n[complete list](/ml-kit/language/identification/langid-support) of supported languages and scripts.\n\n\u003cbr /\u003e\n\n| **Note:** ML Kit iOS APIs only run on 64-bit devices. If you build your app with 32-bit support, check the device's architecture before using this API.\n\nTry it out\n\n- Play around with [the sample app](https://github.com/googlesamples/mlkit/tree/master/ios/quickstarts/languageid) to see an example usage of this API.\n\nBefore you begin\n\n1. Include the following ML Kit pods in your Podfile: \n\n ```\n pod 'GoogleMLKit/LanguageID', '8.0.0'\n ```\n2. After you install or update your project's Pods, open your Xcode project using its `.xcworkspace`. ML Kit is supported in Xcode version 12.4 or greater.\n\nIdentify the language of a string\n\nTo identify the language of a string, get an instance of\n`LanguageIdentification`, and then pass the string to the\n`identifyLanguage(for:)` method.\n\nFor example: \n\nSwift \n\n```swift\nlet languageId = NaturalLanguage.languageIdentification()\n\nlanguageId.identifyLanguage(for: text) { (languageCode, error) in\n if let error = error {\n print(\"Failed with error: \\(error)\")\n return\n }\n if let languageCode = languageCode, languageCode != \"und\" {\n print(\"Identified Language: \\(languageCode)\")\n } else {\n print(\"No language was identified\")\n }\n}\n```\n\nObjective-C \n\n```objective-c\nMLKLanguageIdentification *languageId = [MLKLanguageIdentification languageIdentification];\n\n[languageId identifyLanguageForText:text\n completion:^(NSString * _Nullable languageCode,\n NSError * _Nullable error) {\n if (error != nil) {\n NSLog(@\"Failed with error: %@\", error.localizedDescription);\n return;\n }\n if (![languageCode isEqualToString:@\"und\"] ) {\n NSLog(@\"Identified Language: %@\", languageCode);\n } else {\n NSLog(@\"No language was identified\");\n }\n }];\n```\n\nIf the call succeeds, a\n[BCP-47 language code](//en.wikipedia.org/wiki/IETF_language_tag) is\npassed to the completion handler, indicating the language of the text. If no\nlanguage could be confidently detected, the code `und` (undetermined) is passed.\n\nBy default, ML Kit returns a non-`und` value only when it identifies the\nlanguage with a confidence value of at least 0.5. You can change this threshold\nby passing a `LanguageIdentificationOptions` object to\n`languageIdentification(options:)`: \n\nSwift \n\n```swift\nlet options = LanguageIdentificationOptions(confidenceThreshold: 0.4)\nlet languageId = NaturalLanguage.languageIdentification(options: options)\n```\n\nObjective-C \n\n```objective-c\nMLKLanguageIdentificationOptions *options =\n [[MLKLanguageIdentificationOptions alloc] initWithConfidenceThreshold:0.4];\nMLKLanguageIdentification *languageId =\n [MLKLanguageIdentification languageIdentificationWithOptions:options];\n```\n\nGet the possible languages of a string\n\nTo get the confidence values of a string's most likely languages, get an\ninstance of `LanguageIdentification` and then pass the string to the\n`identifyPossibleLanguages(for:)` method.\n\nFor example: \n\nSwift \n\n```swift\nlet languageId = NaturalLanguage.languageIdentification()\n\nlanguageId.identifyPossibleLanguages(for: text) { (identifiedLanguages, error) in\n if let error = error {\n print(\"Failed with error: \\(error)\")\n return\n }\n guard let identifiedLanguages = identifiedLanguages,\n !identifiedLanguages.isEmpty,\n identifiedLanguages[0].languageCode != \"und\"\n else {\n print(\"No language was identified\")\n return\n }\n\n print(\"Identified Languages:\\n\" +\n identifiedLanguages.map {\n String(format: \"(%@, %.2f)\", $0.languageCode, $0.confidence)\n }.joined(separator: \"\\n\"))\n}\n```\n\nObjective-C \n\n```objective-c\nMLKLanguageIdentification *languageId = [MLKLanguageIdentification languageIdentification];\n\n[languageId identifyPossibleLanguagesForText:text\n completion:^(NSArray * _Nonnull identifiedLanguages,\n NSError * _Nullable error) {\n if (error != nil) {\n NSLog(@\"Failed with error: %@\", error.localizedDescription);\n return;\n }\n if (identifiedLanguages.count == 1\n && [identifiedLanguages[0].languageCode isEqualToString:@\"und\"] ) {\n NSLog(@\"No language was identified\");\n return;\n }\n NSMutableString *outputText = [NSMutableString stringWithFormat:@\"Identified Languages:\"];\n for (MLKIdentifiedLanguage *language in identifiedLanguages) {\n [outputText appendFormat:@\"\\n(%@, %.2f)\", language.languageCode, language.confidence];\n }\n NSLog(outputText);\n}];\n```\n\nIf the call succeeds, a list of `IdentifiedLanguage` objects is passed to the\ncontinuation handler. From each object, you can get the language's BCP-47 code\nand the confidence that the string is in that language. Note that\nthese values indicate the confidence that the entire string is in the given\nlanguage; ML Kit doesn't identify multiple languages in a single string.\n\nBy default, ML Kit returns only languages with confidence values of at least\n0.01. You can change this threshold by passing a\n`LanguageIdentificationOptions` object to `languageIdentification(options:)`: \n\nSwift \n\n```swift\nlet options = LanguageIdentificationOptions(confidenceThreshold: 0.4)\nlet languageId = NaturalLanguage.languageIdentification(options: options)\n```\n\nObjective-C \n\n```objective-c\nMLKLanguageIdentificationOptions *options =\n [[MLKLanguageIdentificationOptions alloc] initWithConfidenceThreshold:0.4];\nMLKLanguageIdentification *languageId =\n [MLKLanguageIdentification languageIdentificationWithOptions:options];\n```\n\nIf no language meets this threshold, the list has one item, with the value\n`und`."]]