触摸-父母与孩子的用户互动

Question

I have an issue regarding Touches, maybe several people have had it though.

I have a view that has some Labels and imageviews on it. If i disabled the touches of my View by saying userinteraction disabled then all the touches of all subviews get disabled, what if i may want to have touches enabled for a few and disabled for a few, when userinteraction of view is disabled.

Is this the only solution: Create two seperate views, out of which one's user interaction would be enabled and others' would be disabled and implement my stuff on top of it?

Regards, Reno Jones

Answer 1

Usually UILabel and UIImageView don't have touch event by default. So you only need to enable touch event where you want to have them.

i strongly recommmend to use always UIButton like this:

- (void)viewDidLoad {
    UIButton *buttonActionA = [[UIButton alloc] initWithFrame:CGRectMake(50.0, 50.0, 100.0, 100.0)];
    [buttonActionA addTarget:self action:@selector(doActionA) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:buttonActionA];
    [buttonActionA release];
}

- (void) doActionA {
    NSLog(@"This is Action A");
}

and avoid subclassing UIView just to implement

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

did that answer your question ?