Question

我是swift和IOS开发的新手，因此我在Xcode中制作了一个Action Sheet，但现在我想从Action Sheet执行操作。我熟悉在ObjC中使用按钮索引，但我似乎无法在swift中解决这个问题。

我还想自定义我的操作表，使文本颜色不同，但这并不重要。如果你能提供帮助，请告诉我。感谢

到目前为止，这是我的代码，但是当按下按钮时，我的Action的.tag部分是错误的...

    @IBAction func ActionSheet(sender: UIButton) {

    var sheet: UIActionSheet = UIActionSheet();
    let title: String = "Action Sheet!";
    sheet.title  = title;
    sheet.addButtonWithTitle("Cancel");
    sheet.addButtonWithTitle("A course");
    sheet.addButtonWithTitle("B course");
    sheet.addButtonWithTitle("C course");
    sheet.cancelButtonIndex = 0;
    sheet.showInView(self.view);

}


func actionSheet(sheet: UIActionSheet!, clickedButtonAtIndex buttonIndex: Int) {
    if (actionSheet.tag == 1) {
        NameLabel.text = "I am confused"

    }
}

Answer 1

你需要：

使您的视图控制器符合UIActionSheetDelegate协议：

class ViewController: UIViewController, UIActionSheetDelegate {

添加self作为代理人，并将代码设置为1：

var sheet: UIActionSheet = UIActionSheet()
let title: String = "Action Sheet!"
sheet.title  = title
sheet.addButtonWithTitle("Cancel")
sheet.addButtonWithTitle("A course")
sheet.addButtonWithTitle("B course")
sheet.addButtonWithTitle("C course")
sheet.cancelButtonIndex = 0
sheet.delegate = self                  // new line here
sheet.tag = 1                          // another new line here
sheet.showInView(self.view)

现在您可以使用buttonIndex：

func actionSheet(sheet: UIActionSheet!, clickedButtonAtIndex buttonIndex: Int) {
    if sheet.tag == 1 {
        println(buttonIndex)
        println(sheet.buttonTitleAtIndex(buttonIndex))
    }
}

Answer 2

我认为您的序列不正确，也没有设置委托。

将您的类声明为委托

class ViewController: UIViewController, UIActionSheetDelegate{

...

定义行动表

  @IBAction func ActionSheet(sender: UIButton) {

    let actionSheet = UIActionSheet(title: "ActionSheet", delegate: self, cancelButtonTitle: "Cancel", destructiveButtonTitle: "Done", otherButtonTitles: "A Course", "B Course", "C course")
    actionSheet.showInView(self.view)

}

定义代理功能

func actionSheet(actionSheet: UIActionSheet!, clickedButtonAtIndex buttonIndex: Int)
{
    switch buttonIndex{

    case 0:
        NSLog("Done");
        break;
    case 1:
        NSLog("Cancel");
        break;
    case 2:
        NSLog("A Course");
        break;
    case 3:
        NSLog("B Course");
        break;
    case 4:
        NSLog("C Course");
        break;

 }

Answer 3

我创建了一个库，您可以使其像动作表视图一样工作：）

https://github.com/srujanadicharla/SASelectionView

Swift中的ActionSheet操作

3 个答案: