Question

如何在动作的中心设置图标？我正在使用此代码添加3个操作colurCode Done/Undo＆amp; Delete所有这些在细胞上滑动时几乎占据了细胞的所有空间。我想添加自定义图标而不是文本，但是当我添加它时它不显示在我的滑块中，也许它不是在动作中居中，我该怎么做？：

override func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {


    let delete = UITableViewRowAction(style: .normal, title: "Delete") { (action, indexPath) in
        let task = self.tasks[indexPath.row]
        let context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext
        self.tasks.remove(at: indexPath.row)
        context.delete(task)
        (UIApplication.shared.delegate as! AppDelegate).saveContext()
        tableView.deleteRows(at: [indexPath], with: .automatic)
        //tableView.reloadData()

    }

    let colorCode = UITableViewRowAction(style: .normal, title: "Color") { (action, indexPath) in


        let popOverVC = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "popOver")as! popUpViewController
        self.addChildViewController(popOverVC)
        popOverVC.view.frame = self.view.frame
        self.view.addSubview(popOverVC.view)
        popOverVC.didMove(toParentViewController: self)
        tableView.setEditing(false, animated: true)
    }



    let cell=tableView.cellForRow(at: indexPath) as! CustomCell

    if cell.checkTest.on{
        let undone = UITableViewRowAction(style: .normal, title: "Undo") { (action, indexPath) in
            let task = self.tasks[indexPath.row]
            task.checkDone = "off"
            (UIApplication.shared.delegate as! AppDelegate).saveContext()
            // Update Cell
            cell.stopanimate()
            tableView.setEditing(false, animated: true)
        }
        undone.backgroundColor = UIColor.lightGray
        delete.backgroundColor = UIColor(patternImage: UIImage(named: "red dot")!)
        return [delete, undone, colorCode]

    }
    else{
        let done = UITableViewRowAction(style: .normal, title: "Done") { (action, indexPath) in
            let task = self.tasks[indexPath.row]
            task.checkDone = "on"
            (UIApplication.shared.delegate as! AppDelegate).saveContext()

            let cell=tableView.cellForRow(at: indexPath) as! CustomCell 
            cell.makeanimate()                
            tableView.setEditing(false, animated: true) 
        } 
        done.backgroundColor = UIColor.lightGray
        delete.backgroundColor = UIColor(patternImage: UIImage(named: "tick1")!)
        return [delete, done, colorCode]


    }


}

Answer 1

您可以像static Color VectorInterpolate(float mix, Color c0, Color c1) { float alt = 1.0f - mix; double x0 = c0.R; double y0 = c0.G; double z0 = c0.B; double x1 = c1.R; double y1 = c1.G; double z1 = c1.B; double mag0 = Math.Sqrt(x0 * x0 + y0 * y0 + z0 * z0); double mag1 = Math.Sqrt(x1 * x1 + y1 * y1 + z1 * z1); double x = mix * x0 + alt * x1; double y = mix * y0 + alt * y1; double z = mix * z0 + alt * z1; double mag = mix * mag0 + alt * mag1; double scale = mag / Math.Sqrt(x * x + y * y + z * z); return Color.FromRgb(Clamp(x * scale), Clamp(y * scale), Clamp(z * scale)); } static byte Clamp(double value) { var x = (int)Math.Round(value); if (x > 255) return 255; if (x < 0) return 0; return (byte) x; }

一样向row action title添加一些空白区域

"      Delete     "

如何在editActionsForRowAt操作中使用图标

1 个答案: