对UITableView使用didSelectRowAtIndexPath或prepareForSegue方法？ [英] Use didSelectRowAtIndexPath or prepareForSegue method for UITableView?

问题描述

我正在使用故事板，我有一个UITableView。我有一个segue设置，从我的表推送到详细VC。但是我应该使用哪种方法来处理这个问题？我必须将几个对象传递给详细视图。但我是否使用 didSelectRowAtIndex 或 - （void）prepareForSegue：（UIStoryboardSegue *）segue sender：（id）sender ？

解决方案

如果你使用 prepareForSegue：sender：那么你就不会如果你以后决定从表格视图之外的某些控件触发segue，那就要改变了。

prepareForSegue：sender：消息被发送到当前视图控制器，所以我建议这样的事情：

   - （void） prepareForSegue：（UIStoryboardSegue *）segue sender：（id）sender 
 {
 //假设self.view是表视图
 NSIndexPath * path = [self.tableView indexPathForSelectedRow]; 
 DetailObject * detail = [self detailForIndexPath：path]; 
 [segue.destinationViewController setDetail：detail]; 
} 
  

在Swift中：

< pre class =lang-swift prettyprint-override> 覆盖func prepareForSegue（segue：UIStoryboardSegue，sender：AnyObject？）{
let path = self.tableView.indexPathForSelectedRow（）！
segue.destinationViewController.detail = self.detailForIndexPath（path）
}


I'm using storyboards and I have a UITableView. I have a segue setup that pushes from my table to the detail VC. But which method should I use to handle this? I'll have to pass a couple objects to the detail view. But do I use didSelectRowAtIndex or -(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender?

解决方案

If you use prepareForSegue:sender:then you won't have as much to change if you later decide to trigger the segue from some control outside the table view.

The prepareForSegue:sender: message is sent to the current view controller, so I'd suggest something like this:

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    // Assume self.view is the table view
    NSIndexPath *path = [self.tableView indexPathForSelectedRow];
    DetailObject *detail = [self detailForIndexPath:path];
    [segue.destinationViewController setDetail:detail];
}

In Swift:

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    let path = self.tableView.indexPathForSelectedRow()!
    segue.destinationViewController.detail = self.detailForIndexPath(path)
}

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