swift tableview如何选择所有行 [英] swift tableview how to select all rows

问题描述

我在表格视图中有一个按钮，当我按下该按钮时，它将选择所有单元格行，该怎么做?我尝试了很多，但一无所获

I have Button in tableview I want when I press that button will select all cell rows, how to do that? I tried alot but I got nothing

我很困惑如何使按钮与单元格接触

I'm so confused how to make the button contact the cell

我试图像这样制作var

I've tried to make var like this

var x = false

那我喜欢

if( x == true ) { //Code }

当您按下按钮时，它将为真

and when you press the button it will be true

但是我不知道该放在哪个函子中?而且我不知道如何选择所有行

but I don't know in which func I should put this ? and I don't know how to select all rows

有人可以帮助我如何选择\按下表格视图中的按钮时取消选择单元格中的所有行.

Could someone help me how to Select \ Deselect all rows in cell when pressing button in tableview.

非常感谢您！

推荐答案

var selectedUsernameArray : NSMutableArray = []
var username1Array : NSMutableArray = ["hel","dsf","fsdg"]//just a sample

最初的按钮名称应为全选"

Initially button name should be "Select all"

按钮动作:

 @IBAction func buttonAction(sender: UIButton) {

   if(sender.titleLabel?.text == "Select all")
    {
        selectedUsernameArray .addObjectsFromArray(username1Array as [AnyObject])
        sender.titleLabel?.text = "Deselect all"
    }
    else
   {
    selectedUsernameArray .removeAllObjects();
    sender.titleLabel?.text = "Select all"
    }

    self.tableView .reloadData()
}

tableview委托

tableview delegate

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as! UITableViewCell
    var ob: AnyObject = username1Array .objectAtIndex(indexPath.row);
    cell.textLabel?.text = ob as? String;
    if(selectedUsernameArray .containsObject(ob))
    {
      cell.backgroundColor = UIColor.blueColor();
    }
    else
    {
        cell.backgroundColor = UIColor.whiteColor();
    }
    return cell
}

这篇关于swift tableview如何选择所有行的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！