A simple view which allows for an iOS Messages style keyboard input view and panning behavior.
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A simple view which allows for an iOS Messages style keyboard input view and panning behavior.

Sample Project

Supports iOS 7.0+

  • Free of method swizzling
  • No associated objects or other runtime hacks
  • Works easily with or without Auto Layout
  • Tested on iOS 7, iOS 8, iPhone & iPad

This is a UIView subclass which allows for observing the frame of a UITextView or UITextField's inputAcessoryView. This allows your to keep the text field above the keyboard as it moves. Also this allows for interactive keyboard dismissal using UIScrollView's keyboardDismissMode property.

Sample Code & Usage

To run the example project, clone the repo, and run pod install from the Example directory first.

Here is a sample viewDidLoad implementation.

- (void)viewDidLoad {
    [super viewDidLoad];
    self.tableView.keyboardDismissMode = UIScrollViewKeyboardDismissModeInteractive;
    BABFrameObservingInputAccessoryView *inputView = [[BABFrameObservingInputAccessoryView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 44)];
    inputView.userInteractionEnabled = NO;
    self.textField.inputAccessoryView = inputView;
    __weak typeof(self)weakSelf = self;
    inputView.inputAcessoryViewFrameChangedBlock = ^(CGRect frame){
        CGFloat value = CGRectGetHeight(weakSelf.view.frame) - CGRectGetMinY(weakSelf.textField.inputAccessoryView.superview.frame) - CGRectGetHeight(weakSelf.textField.inputAccessoryView.frame);
        weakSelf.toolbarContainerVerticalSpacingConstraint.constant = MAX(0, value);
        [weakSelf.view layoutIfNeeded];



  • Requires iOS 7.0+


BABFrameObservingInputAccessoryView is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod "BABFrameObservingInputAccessoryView"


Bryn Bodayle, bryn.bodayle@gmail.com


BABFrameObservingInputAccessoryView is available under the MIT license. See the LICENSE file for more info.