I want to catch both mouse down and mouse up using gesture recognizer. However, when the mouse down is caught, mouse up is never caught.

Here's what I did:

First create a custom MouseGestureRecognizer:

@implementation MouseGestureRecognizer
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {  
    [super touchesBegan:touches withEvent:event];  
    self.state = UIGestureRecognizerStateRecognized;  
}  

-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {  
    [super touchesEnded:touches withEvent:event];  
    self.state = UIGestureRecognizerStateRecognized;  
}  
@end  

Then bind the recognizer to a view in view controller:

UIGestureRecognizer *recognizer = [MouseGestureRecognizer alloc] initWithTarget:self action:@selector(handleGesture:)];  
[self.view addGestureRecognizer:recognizer];  

When I click mouse in the view, the touchesBegan is called, but touchesEnded is never called. Is it because of the UIGestureRecognizerStateRecognized?

Any advice will be appreciated! Thanks!