检测是否已安装自定义键盘

Question

我已阅读文档，但似乎找不到任何方法来检测设置>常规>键盘中是否安装了自定义键盘？

有人知道吗？

Answer 1

这可以通过

NSUserDefaults

实现。只需检索

standardUserDefaults

对象，该对象包含用户为“AppleKeyboards”键安装的所有键盘的数组。然后检查数组是否包含键盘扩展的包标识符。

NSArray *keyboards = [[NSUserDefaults standardUserDefaults] objectForKey:@"AppleKeyboards"];
NSLog(@"keyboards: %@", keyboards);

// check for your keyboard
NSUInteger index = [keyboards indexOfObject:@"com.example.productname.keyboard-extension"];

if (index != NSNotFound) {
    NSLog(@"found keyboard");
}

Answer 2

这对我有用

func isKeyboardExtensionEnabled() -> Bool {
    guard let appBundleIdentifier = Bundle.main.bundleIdentifier else {
        fatalError("isKeyboardExtensionEnabled(): Cannot retrieve bundle identifier.")
    }

    guard let keyboards = UserDefaults.standard.dictionaryRepresentation()["AppleKeyboards"] as? [String] else {
        // There is no key `AppleKeyboards` in NSUserDefaults. That happens sometimes.
        return false
    }

    let keyboardExtensionBundleIdentifierPrefix = appBundleIdentifier + "."
    for keyboard in keyboards {
        if keyboard.hasPrefix(keyboardExtensionBundleIdentifierPrefix) {
            return true
        }
    }

    return false
}

Answer 3

这是 2023 年 @Matt 解决方案的 Swift 版本，希望对您有所帮助：

if let keyboards = UserDefaults.standard.array(forKey: "AppleKeyboards") as? [String] {
    print("keyboards: \(keyboards)")
    
    if let index = keyboards.firstIndex(of: "com.example.productname.keyboard-extension") {
        print("found keyboard")
    }
}