打印用户单击的行的NSTableView的行号 [英] Print the NSTableView's row number of the row clicked by the user

问题描述

我有一列的NSTableView.我想打印用户单击的行的行号.我不确定从哪里开始.有办法吗?

I have a NSTableView with one column. I would like to print the row number of the row that the user has clicked on. I am not sure where I should start with this. Is there a method for this?

推荐答案

您可以在NSTableView委托的tableViewSelectionDidChange方法中使用tableView中的selectedRowIndexes属性.

You can use the selectedRowIndexes property from the tableView in the tableViewSelectionDidChange method in your NSTableView delegate.

在此示例中，tableView允许多项选择.

In this example, the tableView allows multiple selection.

快捷键3

func tableViewSelectionDidChange(_ notification: Notification) {
    if let myTable = notification.object as? NSTableView {
        // we create an [Int] array from the index set
        let selected = myTable.selectedRowIndexes.map { Int($0) }
        print(selected)
    }
}

快捷键2

func tableViewSelectionDidChange(notification: NSNotification) {
    var mySelectedRows = [Int]()
    let myTableViewFromNotification = notification.object as! NSTableView
    let indexes = myTableViewFromNotification.selectedRowIndexes
    // we iterate over the indexes using `.indexGreaterThanIndex`
    var index = indexes.firstIndex
    while index != NSNotFound {
        mySelectedRows.append(index)
        index = indexes.indexGreaterThanIndex(index)
    }
    print(mySelectedRows)
}

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