How to detect whether custom keyboard is activated from the keyboard's container app?
Solution 1:
Here is a method I have used in one of my projects. I think it is what you asked for, hope it helps you.
- (BOOL)isCustomKeyboardEnabled {
NSString *bundleID = @"com.company.app.customkeyboard"; // Replace this string with your custom keyboard's bundle ID
NSArray *keyboards = [[[NSUserDefaults standardUserDefaults] dictionaryRepresentation] objectForKey:@"AppleKeyboards"]; // Array of all active keyboards
for (NSString *keyboard in keyboards) {
if ([keyboard isEqualToString:bundleID])
return YES;
}
return NO;
}
Solution 2:
Just in case here is Swift version of Kurt's brilliant and awesome answer:
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
}