Question

如何在从数组循环时为UIButton分配唯一标记：

var buttonArray: NSMutableArray = ["one", "two", "Three"] // it is a mutable array but for illustration purposes only I put this....
for btnName in buttonArray {

    let button = UIButton(frame: CGRectMake(0,0,100,100))

    button.layer.masksToBounds = true
    button.layer.cornerRadius = 20
    button.setTitle("\(btnName)", forState: UIControlState.Normal)

    //button.tag = ??????

    print(button.tag)

}

Answer 1

显然你可以注入一些反击。

bash

Answer 2

或者，您可以使用enumerate()。这将创建一个惰性序列，包含带有索引的元素对。

例如：

for (index, btnName) in buttonArray.enumerate() {

    let button = UIButton(frame: CGRectMake(0,0,100,100))

    ...

    button.tag = index
}

从数组循环时将标记分配给UIButton

2 个答案: