Calling a function from a button - ios

Question

Can anyone help me to understand what is going wrong with my function below pls?
I'm fairly new to native IOS dev.
I wanted to implement a side panel into our app using this tutorial (http://www.appcoda.com/ios-programming-sidebar-navigation-menu/).
All that works fine and is straightforward enough - but I wanted to trigger the reveal functionality via a standard button rather than a dynamic button in the header - to suit our design..
The original code is as follows -
#import "SWRevealViewController.h"
// Change button color
_sidebarButton.tintColor = [UIColor colorWithWhite:0.96f alpha:0.2f];
// Set the side bar button action. When it's tapped, it'll show up the sidebar.
_sidebarButton.target = self.revealViewController;
_sidebarButton.action = #selector(revealToggle:);
// Set the gesture
[self.view addGestureRecognizer:self.revealViewController.panGestureRecognizer];
to replicate that functionality triggered by a button I added the following to the .h file -
#property (weak, nonatomic) IBOutlet UIBarButtonItem *sidebarButton;
#property (weak, nonatomic) IBOutlet UIButton *revealLeftBtn;
- (IBAction)btnClickRevealL:(id)sender;
and the following in my .m file
- (IBAction)btnClickRevealL:(id)sender {
[self.revealViewController];
[#selector(revealToggle:)];
}
I get the error 'suspected identifier' for the above lines - I dont understand how the functions triggered with the previous method and not with the above - can anyone help?
Cheers
for reference this is the entire .M file -
#import "MainViewController.h"
#import "SWRevealViewController.h"
#interface MainViewController ()
#end
#implementation MainViewController
- (void)viewDidLoad
{
[super viewDidLoad];
self.title = #"";
// Change button color
_sidebarButton.tintColor = [UIColor colorWithWhite:0.96f alpha:0.2f];
[self.navigationController.navigationBar setTranslucent:TRUE];
// Set the side bar button action. When it's tapped, it'll show up the sidebar.
// Set the gesture
[self.view addGestureRecognizer:self.revealViewController.panGestureRecognizer];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)btnClickRevealL:(id)sender {
[self.revealViewController];
[#selector(revealToggle:)];
}
#end

Answer 1

This line:
(IBAction)btnClickRevealL:(id)sender {
[self.revealViewController];
[#selector(revealToggle:)];
}
Does nothing.
I guess this is what you want to do:
[self.revealViewController revealToggle:sender];
When you set the target and the action of a button, you set which class is doing the action (target) and what method is called (action).
that's the equivalent of doing [target action]

Answer 2

- (IBAction)logInBtnClicked:(id)sender {
//Remove WhiteSpace from start of uitextfield
self.emailIdTxtFldRef.text = [self.emailIdTxtFldRef.text stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceCharacterSet]];
self.passwordTxtFldRef.text = [self.passwordTxtFldRef.text stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceCharacterSet]];
if ([self.emailIdTxtFldRef.text isEqualToString:#""]||[self.passwordTxtFldRef.text isEqualToString:#""]) {
[self showMessage:#"All fields are mandatory" withTitle:#"Error"];
}else{
SWRevealViewController *revealVC = [self.storyboard instantiateViewControllerWithIdentifier:#"swRevealViewContoller"];
revealVC.delegate=self;
[[UIApplication sharedApplication]keyWindow].rootViewController = revealVC;
}
}