iphone - 如何为 UIButton 添加操作

Question

我是 iPhone 技术的新手。请任何人告诉我如何为 UIButton 添加操作。

UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = CGRectMake(0, 0, 100, 25);
btn.backgroundColor = [UIColor clearColor];
[btn setTitle:@"Play" forState:UIControlStateNormal];
[btn addTarget:self action:(buttonClick:) forControlEvents:UIControlEventTouchUpInside];
btn.center = self.center;
[self addSubview:btn];

Answer 1

使用这个

    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [button addTarget:self 
       action:@selector(aMethod:)forControlEvents:UIControlEventTouchDown];
    [button setTitle:@"Show View" forState:UIControlStateNormal];
    button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);
    [view addSubview:button];