Objective-c – How to move UITextView correction suggestion above text

cocoa-touchiphoneobjective cuitextview

I'm using a UITextView to roughly replicate the SMS text box above the keyboard. I'm using a UITextView instead of a field so that it can expand with multiple lines.

The problem is that, in my UITextView, the correction suggestions pop up below the text, causing them to be partially obscured by the keyboard.

In the SMS app, the suggestions pop up above the text. The placement does not appear to be a property of UITextView, or UITextInputTraits.

Any idea how to replicate this behavior? Thanks!

Best Answer

The problem is that the Keyboard is implemented as a separate UIWindow, rather than as a view within the main UIWindow, so layout with it is tricky. Here are some pointers in the right direction:

Hunt through the application's -windows property to find the private UITextEffectsWindow window and figure out its frame. This is the keyboard
Hunt through the TextView's subviews to find the private UIAutocorrectInlinePrompt view. This is the autocorrect bubble.
Move that subview into a separate wrapper view (added to the TextView) and then move that wrapper view so it's above the above-mentioned keyboard window.

You'll notice two mentions of "private" above. That carries all the relevant caveats. I have no idea why Apple has allowed the problem to persist when even their apps have had to work around it.

Related Solutions

Ios – How to size a UITextView to its content

This works for both iOS 6.1 and iOS 7:

- (void)textViewDidChange:(UITextView *)textView
{
    CGFloat fixedWidth = textView.frame.size.width;
    CGSize newSize = [textView sizeThatFits:CGSizeMake(fixedWidth, MAXFLOAT)];
    CGRect newFrame = textView.frame;
    newFrame.size = CGSizeMake(fmaxf(newSize.width, fixedWidth), newSize.height);
    textView.frame = newFrame;
}

Or in Swift (Works with Swift 4.1 in iOS 11)

let fixedWidth = textView.frame.size.width
let newSize = textView.sizeThatFits(CGSize(width: fixedWidth, height: CGFloat.greatestFiniteMagnitude))
textView.frame.size = CGSize(width: max(newSize.width, fixedWidth), height: newSize.height)

If you want support for iOS 6.1 then you should also:

textview.scrollEnabled = NO;

Objective-c – How to dismiss keyboard for UITextView with return key

Figured I would post the snippet right here instead:

Make sure you declare support for the UITextViewDelegate protocol.

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text {

    if([text isEqualToString:@"\n"]) {
        [textView resignFirstResponder];
        return NO;
    }

    return YES;
}

Swift 4.0 update:

func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool {
    if text == "\n" {
        textView.resignFirstResponder()
        return false
    }
    return true
}

Best Answer

Related Solutions

Ios – How to size a UITextView to its content

Objective-c – How to dismiss keyboard for UITextView with return key

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