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我有一个 UITableViewCell 按钮来拍摄图像并将其放回单元格中。当我调用 UIImagePickerController 并选择/获取图像时，它应该调用以下函数

 func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject], sender:AnyObject)

由于某种原因，它没有调用此函数，因此，我无法将所选 UIImage 放置到当前单元格中。任何帮助将不胜感激。

这是按钮代码

@IBAction func takePhoto(sender: AnyObject) {
    let imagePickerController = UIImagePickerController()
    imagePickerController.delegate = self
    imagePickerController.allowsEditing = true

    let actionSheet = UIAlertController(title: "Choose image souruce", message: nil, preferredStyle: UIAlertControllerStyle.ActionSheet)

    actionSheet.addAction(UIAlertAction(title: "Take Image", style: UIAlertActionStyle.Default, handler: { (alert:UIAlertAction!) -> Void in
        imagePickerController.sourceType = UIImagePickerControllerSourceType.Camera
        self.presentViewController(imagePickerController, animated: true, completion: nil)
    }))

    actionSheet.addAction(UIAlertAction(title: "Photo Library", style: UIAlertActionStyle.Default, handler: { (alert:UIAlertAction!) -> Void in
        imagePickerController.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
        self.presentViewController(imagePickerController, animated: true, completion: nil)
    }))
    actionSheet.addAction(UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel, handler: nil))
    self.presentViewController(actionSheet, animated: true, completion: nil)

}

这是 didFinishPickingMediaWithInfo 上的 imagePickerController 函数

self.reloadData 是运行 UITableView 并重新加载数据的函数。

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject], sender:AnyObject) {
    var btnPos: CGPoint = sender.convertPoint(CGPointZero, toView: self.tableView)
    //Gets the chosen cell indexPath
    var indexPath: NSIndexPath = self.tableView.indexPathForRowAtPoint(btnPos)!
    let currentCell:TableViewCell = tableView.cellForRowAtIndexPath(indexPath) as TableViewCell
    let iamgePicked:UIImage = info[UIImagePickerControllerOriginalImage] as UIImage
    currentCell.cellImageOulet.image = iamgePicked
    picker.dismissViewControllerAnimated(true, completion: nil)
    self.loadData()


}
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1 回答 1

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let currentCell:TableViewCell = tableView.cellForRowAtIndexPath(indexPath) as TableViewCell

这行不通。表视图具有某种声明式的数据源。这意味着您需要保存要在表格视图中显示的图像，并在 tableViewCellForRowAtIndexPath 中使用它们

于 2015-03-21T15:47:55.573 回答