从 uiimagePickerController 更改单元格背景颜色

Question

请告诉我如何从 imagePickerController 函数更改单元格的 backGroundColor:

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
        self.dismiss(animated: true, completion: nil)
        //let imageUser = info[UIImagePickerController.InfoKey.editedImage] as! UIImage

        let indexPath = IndexPath(item: 0, section: 0)
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cellRegisterMarket", for: indexPath) as! cellRegisterMarket
        cell.backgroundColor = .red
}

Answer 1

替换这个

let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cellRegisterMarket", for: indexPath) as! cellRegisterMarket

和

let cell = collectionView.cellForItem(at:indexPath) as! cellRegisterMarket

顺便说一句，这不是一个好方法，请更新模型并重新加载集合

Answer 2

你应该试试这个：

let indexPath = IndexPath(item: 0, section: 0)
let cell = collectionView.cellForItemAtIndexPath(indexPath) as! cellRegisterMarket
cell.backgroundColor = .red

从 uiimagePickerController 更改单元格背景颜色

change cell's backGroundColor from imagePickerController

uiimagepickercontroller

ios

swift