How to use autocorrection and shortcut list in iOS8 custom keyboard?

Question

I want to use the autocorrection and shortcut list like default English keyboard with my custom keyboard. I check the in keyboard document but don\'t know how to use it.

Answer 1

In case anyone is still looking into this, I found a really nice C++ predictive text library called Presage. It seems to do a good job based on the demo but I'm having a lot of trouble trying to integrate it as a library (see my question here).

Let me know if anyone has any ideas, very interested in getting this working!

Answer 2

This is the way you can actually access Lexicon words:

[self requestSupplementaryLexiconWithCompletion:^(UILexicon *receivedLexicon) {
    self.lexicon = receivedLexicon;

    for (UILexiconEntry *word in self.lexicon.entries) {
        // Text to be inserted into a text input object by a custom keyboard, corresponding to the userInput value in the same lexicon entry.
        NSLog(@"%@",word.documentText);
        // Text to match, during user input, to provide appropriate output to a text document from the documentText value in the same lexicon entry.
        NSLog(@"%@",word.userInput);
    }
}];

Answer 3

You can use below logic for AutoCorrect & it will also work in iOS 10

-(void)didClickAtAlphaNumericKeyboardKey:(NSString *)value {

    if ([value isEqualToString:@" "]) {
            UITextChecker *checker = [[UITextChecker alloc] init];
            currentString = self.textDocumentProxy.documentContextBeforeInput;
            NSCharacterSet *charSet = [NSCharacterSet whitespaceAndNewlineCharacterSet];
            NSArray *components = [currentString componentsSeparatedByCharactersInSet:charSet];
            NSString *lastWord = components.lastObject;

            NSRange checkRange = NSMakeRange(0, lastWord.length);
            NSRange misspelledRange = [checker rangeOfMisspelledWordInString:lastWord
                                                                       range:checkRange
                                                                  startingAt:checkRange.location
                                                                        wrap:NO
                                                                    language:@"en_US"];

            NSArray *guessedWord = [checker guessesForWordRange:misspelledRange inString:lastWord language:@"en_US"];

            if (guessedWord && guessedWord.count > 0) {
                for (int i = 0; lastWord.length >i ; i++) {
                    [self.textDocumentProxy deleteBackward];
                }
                [self.textDocumentProxy insertText:[guessedWord objectAtIndex:0]];
            }
    }

    [self.textDocumentProxy insertText:value];
}