Hide UIWebView Keyboard Bar

RAEditorView.m

@implementation RAEditorView

- (instancetype) initWithCoder:(NSCoder *)aDecoder {
	self = [super initWithCoder:aDecoder];
	if (self) {
        [self setup];
    }
	return self;
}

- (instancetype) initWithFrame:(CGRect)frame {
    self = [super initWithFrame:frame];
	if (self) {
    	[self setup];
    }
	return self;
}

- (void) setup {
	[self hideKeyboardBar];
}

- (void) hideKeyboardBar {
	static NSString * uniqueSuffix;
	static dispatch_once_t onceToken;
	dispatch_once(&onceToken, ^{
		uniqueSuffix = (__bridge_transfer NSString *)CFUUIDCreateString(NULL, CFUUIDCreate(NULL));
	});
	
	for (UIView *aView in self.scrollView.subviews) {
		Class ownClass = [aView class];
		NSString *className = NSStringFromClass(ownClass);
		if (![className hasSuffix:uniqueSuffix]) {
			NSString *newClassName = [className stringByAppendingString:uniqueSuffix];
			Class newClass = objc_allocateClassPair(ownClass, [newClassName UTF8String], 0);
			if (newClass) {
				IMP nilImp = [self methodForSelector:@selector(methodReturningNil)];
				class_addMethod(newClass, @selector(inputAccessoryView), nilImp, "@@:");
				objc_registerClassPair(newClass);
			}
			object_setClass(aView, (newClass ?: NSClassFromString(newClassName)));
		}
	}
}

- (id) methodReturningNil {
	return nil;
}

@end