我能够在我的集合视图中检测选定的行(图像),但我需要将其发送到另一个视图控制器。以下是代码的一部分:
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
if let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as? CollectionViewCell {
cell.cellImage.image = UIImage(named: images[indexPath.row])
return cell
} else {
return CollectionViewCell()
}
}
//Printinig the selected image ID in console
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath)
{
SelectedItem = indexPath.row + 1
print(SelectedItem)
}
//Navigate to MPViewController
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
let DestViewController = segue.destination as! MPViewController
DestViewController.labelText = String(SelectedItem)
}
}
答案 0 :(得分:0)
在目标类中获取一个实例变量,并在准备segue时设置它的值,然后在viewDidload
中将该字符串设置为标签的文本,如
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
let DestViewController = segue.destination as! MPViewController
DestViewController.yourText = String(SelectedItem)
}
ans viewDidload
yourLabel.text = yourText
答案 1 :(得分:0)
//Printinig the selected image ID in console
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath)
{
self.SelectedItem = indexPath.row + 1
self.selectedImage = UIImage(named: images[indexPath.row]);
print(SelectedItem)
}
//Navigate to MPViewController
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
let DestViewController = segue.destination as! MPViewController
DestViewController.imageSelected = self.selectedImage;
DestViewController.selectedItem = String(self.SelectedItem);
}
现在,在MPViewController中,您可以根据需要使用数据self.imageSelected和self.selectedItem。
答案 2 :(得分:0)
首先初始化变量
var imageToPass:UIImage!
然后更新didSelectItemAt func
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath)
{
SelectedItem = indexPath.row + 1
print(SelectedItem)
self.imageToPass = UIImage(named: images[SelectedItem])
performSegue(withIdentifier: "TargetVC", sender: imageToPass) //here you give the identifier of target ViewController
}
转到TargetVC并初始化变量
var getImage:UIImage!
然后覆盖之前VC中的功能
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "TargetVC" {
if let targetVC = segue.destination as? TargetVC {
if let imageToPass = sender as? UIImage {
TargetVC.getImage = imageToPass
}
}
}
}