动态 viewForHeaderInSection 和多个 cellForRowAtIndexPath [英] Dynamic viewForHeaderInSection and multiple cellForRowAtIndexPath

问题描述

我正在尝试将自定义单元格设为单元格的部分:

I'm trying to make a custom cell to be the Section of my cells:

为此，我覆盖了一些功能，例如:

For this I'm overriding some functions like:

numberOfRowsInSection

numberOfRowsInSection

viewForHeaderInSection

viewForHeaderInSection

heightForHeaderInSection

heightForHeaderInSection

我正在使用多个 cellForRowAtIndexPath 我正在使用 if indexPath.row 来标识 Cell 并将它们填充到动态方式.

And I'm working with multiple cellForRowAtIndexPath I'm using a if indexPath.row to identify the Cell and populate them in a dynamic way.

import UIKit

class TesteTableViewController: PFQueryTableViewController {


override func preferredStatusBarStyle() -> UIStatusBarStyle {
    return UIStatusBarStyle.LightContent
}

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    loadCollectionViewData()

}


func loadCollectionViewData() {

    // Build a parse query object
    let query = PFQuery(className:"Feed")

    // Check to see if there is a search term


    // Fetch data from the parse platform
    query.findObjectsInBackgroundWithBlock {
        (objects: [PFObject]?, error: NSError?) -> Void in

        // The find succeeded now rocess the found objects into the countries array
        if error == nil {

            print(objects!.count)
            // reload our data into the collection view


        } else {
            // Log details of the failure

        }
    }
}


override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    // #warning Incomplete implementation, return the number of sections
    return objects!.count
}

override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return 1
}


override func tableView(tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
    var header = tableView.dequeueReusableCellWithIdentifier("Cell2")! as! TesteTableViewCell


    return header
}

override func tableView(tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
    return 30.0
}


// Initialise the PFQueryTable tableview
override init(style: UITableViewStyle, className: String!) {
    super.init(style: style, className: className)
}

required init(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)!

    // Configure the PFQueryTableView
    self.parseClassName = "Feed"
    self.pullToRefreshEnabled = true
    self.paginationEnabled = false
}



override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

var cell: TesteTableViewCell!
    let object = objects![indexPath.section]
if indexPath.row == 0 {
cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath) as! TesteTableViewCell




// Extract values from the PFObject to display in the table cell
if let nameEnglish = object["name"] as? String {
cell?.label1?.text = nameEnglish

}


}
else{
cell = tableView.dequeueReusableCellWithIdentifier("Cell2", forIndexPath: indexPath) as! TesteTableViewCell


    // Extract values 2from the PFObject to display in the table cell
    if let nameEnglish2 = object["brief"] as? String {
        cell?.label2?.text = nameEnglish2


    }

}

return cell
}

}

通过我的代码，我得到了这个结果:

With my code I have this result:

我成功地用不同的标识符填充了两个单元格.

I'm successfully populating both Cells with different Identifiers.

但是看起来这个函数是在 cellForRowAtIndexPath 之前调用的，它返回我在 storyBoard 中的内容，而不是我动态填充的内容.

But look like this function is called before the cellForRowAtIndexPath and it return the content that I have in the storyBoard and not the content that I'm populating dynamically.

override func tableView(tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
    var header = tableView.dequeueReusableCellWithIdentifier("Cell2")! as! TesteTableViewCell


    return header
}

我真的认为这是我的问题.(事情发生的顺序).

And I really think that is my problem. (The order that things happen).

有什么想法吗?

谢谢.

推荐答案

您需要将 cellForRowAtIndexPath 中的代码移动到 row != 0 因为那个块的代码永远不会执行，这会导致从故事板而不是动态数据呈现静态数据.

You need to move the code which you have in cellForRowAtIndexPath for row != 0 because that block of code is never executed which is causing static data rendering from storyboard instead of dynamic data.

在这种情况下，您必须在 viewForHeaderInSection 方法中为单元格提供动态数据，以便您的单元格在每次重新加载时填充该信息.

In this case you have to give dynamic data to cell in viewForHeaderInSection method so that you cell will populate that information on each reload.

override func tableView(tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
    var header = tableView.dequeueReusableCellWithIdentifier("Cell2")! as! TesteTableViewCell
let object = objects![section]
 if let nameEnglish2 = object["brief"] as? String {
        header.label2?.text = nameEnglish2
    }
    return header
}

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