Multiple actions for the one BarButtonItem

Question

I'm trying to assign two actions to one BarButtonItem but I have a problem with the syntax (bad receiver type 'NSInteger' aka 'long') and I cannot compile my app. Here is the wrong code:

self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] 
initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(myAction1)];
initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(myAction2)];

I'm using Xcode 5.1 and my target is iOS 7.0.

Can you help me? Thank you in advance.

Answer 1

it that really your code ?

initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(myAction2)];

isn't the receiver missing there ?

also a UIBarButtonItem can only have one target, if you want two actions getting called create a third one that will call the two others

- (IBAction)myAction3:(id)sender {
  [self myAction1:sender];
  [self myAction2:sender];
}

Answer 2

You cannot assign two actions to a BarButtonItem.

You can either call the second action in the selector method.

Or you can simply remove previous target and add new target action conditionally during runtime.

Answer 3

You can not add multiple target/actions to a UIBarButtonItem.

You can add a bar button item with one target/action like so:

UIBarButtonItem *myBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(myAction1)];
self.navigationItem.leftBarButtonItem = myBarButtonItem;

You'll then need to do something like call you second method from the one specified, or whatever is appropriate for your situation.