Simple accessoryview to deal with the Done button on keyboards with type UIKeyboardTypeNumberPad

MOInputAccessoryView.h

#import <UIKit/UIKit.h>

@interface MOInputAccessoryView : UIButton

+ (MOInputAccessoryView *)inputAccessoryViewForTextField:(UITextField *)textfield;

@end

MOInputAccessoryView.m

#import "MOInputAccessoryView.h"

@interface MOInputAccessoryView()

@property (nonatomic, weak) UITextField *textField;

@end

@implementation MOInputAccessoryView

+ (MOInputAccessoryView *)inputAccessoryViewForTextField:(UITextField *)textfield {
    if (textfield.keyboardType != UIKeyboardTypeNumberPad) {
        return nil;
    }
    MOInputAccessoryView *view = [MOInputAccessoryView buttonWithType:UIButtonTypeCustom];
    view.textField = textfield;
    [view addTarget:view action:@selector(endEditing) forControlEvents:UIControlEventTouchUpInside];
    [view setTitle:NSLocalizedString(@"Return", nil) forState:UIControlStateNormal];
    [view setTitleColor:[UIColor colorWithRed:77.0/255.0 green:84.0/255.0 blue:98.0/255.0 alpha:1] forState:UIControlStateNormal];
    [view setTitleShadowColor:[UIColor colorWithWhite:1 alpha:0.5] forState:UIControlStateNormal];
    view.titleLabel.font = [UIFont boldSystemFontOfSize:14];
    view.titleLabel.shadowOffset = CGSizeMake(0, 1);
    
    return view;
}

- (void)setFrame:(CGRect)frame {
    CGRect keyboardFrame = self.superview.frame;
    frame.size.height = 52;
    frame.size.width = 105;
    frame.origin.y = keyboardFrame.size.height - frame.size.height;
    [super setFrame:frame];
}

- (void)endEditing {
    [self.textField endEditing:YES];
}

@end