ios - 导致错误的 Swift 3 更新

Question

我更新到 swift 3.0 后出现这两个错误，请帮忙。下面是代码和图片

我在 self.blockfinish 处遇到错误

var blockFinish: ((_ selectedTags: Array<Tag>, _ unSelectedTags: Array<Tag>) -> ())!

func finishTagController() {
    var selected: Array<Tag> = Array()
    var unSelected: Array<Tag> = Array()

    for currentTag in tags {
        if currentTag.isSelected {
            selected.append(currentTag)
        }
        else {
            unSelected.append(currentTag)
        }
    }
    self.dismissViewControllerAnimated(true, completion: { () -> Void in
        self.blockFinish(selectedTags: selected, unSelectedTags: unSelected)
    })
}

这里我得到一个错误 let ("addTagView.textEdit.text.stringByTrimmingCharactersInSet(spaceSet)")

func createNewTag() {
    let spaceSet = NSCharacterSet.whitespaces
    let contentTag = addTagView.textEdit.text.stringByTrimmingCharactersInSet(spaceSet)
    if strlen(contentTag) > 0 {
        let newTag = Tag(isSelected: false, isLocked: false, textContent: contentTag)
        tags.insert(newTag, atIndex: tags.count)
        collectionTag.reloadData()            
    }
    cancelEditTag()
}

Error image

Answer 1

字符串修剪方法的签名在 Swift 3.0 中发生了变化。 Here is the new method:

func trimmingCharacters(in set: CharacterSet) -> String

所以代替:

let contentTag = addTagView.textEdit.text.stringByTrimmingCharactersInSet(spaceSet)

你会这样做:

let contentTag = addTagView.textEdit.text.trimmingCharacters(in: spaceSet)

编辑: blockFinish 在调用站点不采用任何参数名称。

替换:

self.blockFinish(selectedTags: selected, unSelectedTags: unSelected)

与:

self.blockFinish(selected, unSelected)