将选择器或代码块传递给UIButton事件

Question

我有一个addButton方法创建一个按钮。我需要将按钮UIControlEventTouchUpInside连接到CodeBlock。

你能这样做吗？我也试图通过SEL(selector)。

typedef void (^menuAction)(); 

- (void) addButton:(NSString*)title callback:(menuAction)action{ 
    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect]; 
    [button addTarget:self 
       action:@selector(action) 
    forControlEvents:UIControlEventTouchUpInside]; 
... 

Answer 1

你可以通过在这样的选择：

- (void) addButton:(NSString*)title withSelector:(SEL)selector { 
    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect]; 

    // set some frame 
    CGRect f = CGRectMake(10, 10, 200, 200); 
    [button setFrame:f] ; 

    [button setTitle:title forState:UIControlStateNormal] ; 

    [button addTarget:self 
       action:selector 
    forControlEvents:UIControlEventTouchUpInside]; 

    // add to view 
    [self.view addSubview:button] ; 

} 

，并使用它像这样：

-(void)doStuff { 
    NSLog(@"doStuff"); 
} 

[self addButton:@"some button" withSelector:@selector(doStuff)] ;