为什么我的自定义 ui 表视图单元格中没有填充数据 [英] why the data is not populated in my custom ui table view cell

问题描述

我从服务器获取数据，我想把它放在我的自定义 UITableViewCell 中

I am getting data from the server and i want to put it in my custom UITableViewCell

这是故事板中的单元格

如您所见，有两件事:

1. 偏好标签
2. 三个按钮

当我从服务器接收数据时，我这样做:

when i receive the data from the server, i do this:

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCellWithIdentifier("OneResponseTableViewCell") as! OneResponseTableViewCell
        let oneResponse = self.responses[indexPath.row]
        cell.preferencesLabel?.text = oneResponse.restaurantName
        print("row = \(indexPath.row), timesOptions = \(oneResponse.timeOptions)")
        if oneResponse.timeOptions.count >= 1{
            cell.firstTimeOption!.titleLabel?.text = oneResponse.timeOptions[0];
        }
        if oneResponse.timeOptions.count >= 2 {
            cell.secondTimeOption!.titleLabel?.text = oneResponse.timeOptions[1];
        }
        if oneResponse.timeOptions.count >= 3 {
            cell.thirdTimeOption!.titleLabel?.text = oneResponse.timeOptions[2];
        }
        return cell
    }

如你所见，我正在链接标签和按钮，

as you see, i am chaing the label and the buttons,

然而，按钮并没有被改变，请看结果:

however, the buttons aren't being changed, please look at the result:

我试着把打印放在代码中，打印出来的数据是正确的，请看

i tried to put print as you see in the code, and the data printed is correct, look please

row = 0, timesOptions = ["7:30 pm", "8:30 pm", "9:00 pm"]
row = 1, timesOptions = ["11:30 am", "12:00 pm", "12:30 pm"]
row = 2, timesOptions = ["7:30 pm", "8:30 pm", "9:00 pm"]
row = 3, timesOptions = ["7:30 pm", "8:30 pm", "9:00 pm"]

为什么它在单元格中不正确?

why it is not being correct in the cell?

对不起，我的英语不好

推荐答案

设置按钮标题时，应使用setTitle(forState:).例如:

When setting a button title, you should use setTitle(forState:). For example:

if oneResponse.timeOptions.count >= 1 {
    cell.firstTimeOption.setTitle(oneResponse.timeOptions[0], forState: .Normal)
}
if oneResponse.timeOptions.count >= 2 {
    cell.secondTimeOption.setTitle(oneResponse.timeOptions[1], forState: .Normal)
}
if oneResponse.timeOptions.count >= 3 {
    cell.thirdTimeOption.setTitle(oneResponse.timeOptions[2], forState: .Normal)
}

<小时>

顺便说一句，因为你正在重用单元格，你真的应该检查这些 if 语句的 else 子句，如果失败就隐藏按钮:

---

As an aside, because you are reusing cells, you really should check for the else clause for these if statements, hiding the button if it fails:

if oneResponse.timeOptions.count >= 1 {
    cell.firstTimeOption.setTitle(oneResponse.timeOptions[0], forState: .Normal)
    cell.firstTimeOption.hidden = false
} else {
    cell.firstTimeOption.hidden = true
}
if oneResponse.timeOptions.count >= 2 {
    cell.secondTimeOption.setTitle(oneResponse.timeOptions[1], forState: .Normal)
    cell.secondTimeOption.hidden = false
} else {
    cell.secondTimeOption.hidden = true
}
if oneResponse.timeOptions.count >= 3 {
    cell.thirdTimeOption.setTitle(oneResponse.timeOptions[2], forState: .Normal)
    cell.thirdTimeOption.hidden = false
} else {
    cell.thirdTimeOption.hidden = true
}

<小时>

或者，如果您像我一样讨厌看到这样重复的代码，您可以枚举这三个按钮的数组:

---

Or, if you're like me and hate seeing code repeated like that, you could enumerate through an array of these three buttons:

for (index, button) in [cell.firstTimeOption, cell.secondTimeOption, cell.thirdTimeOption].enumerate() {
    if oneResponse.timeOptions.count > index {
        button.setTitle(oneResponse.timeOptions[index], forState: .Normal)
        button.hidden = false
    } else {
        button.hidden = true
    }
}

理论上，您可以将出口集合用于同一目的，但我不会使用必须遵守顺序的出口集合.

Theoretically you could use an outlet collection to the same end, but I don't use outlet collections where order must be honored.

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