如何获取tableView的indexPath并在方法上使用indexPath prepare(for segue:)

时间:2018-07-11 16:12:59

标签: ios swift3 xcode8

我有一个Tableview,其中显示了一个包含7行的部分,我想做的是,当我按第0行时,将其发送到另一个视图,该表中的所有信息都通过使用修复程序的代码加载,我的问题是如何通过“ prepare()”方法获取indexPath以及如何以编程方式完成segue。

这是我的课程,我的TableView中包含所有代码:

//
//  ControlTablaPrincipalTableViewController.swift
//  Seccion 15
//
//  Created by Barbatos on 7/10/18.
//  Copyright © 2018 Seccion 15. All rights reserved.
//

import UIKit

class ControlTablaPrincipalTableViewController:UITableViewController {

    var titulos : [String] = ["Caja de ahorro","Blog de la Seccion 15","Iniciar Sesion","Galeria de eventos","Convenios", "Ubicacion", "Contactanos"]

    var imagenes : [UIImage] = [#imageLiteral(resourceName: "caja"),#imageLiteral(resourceName: "blog"),#imageLiteral(resourceName: "sesion"),#imageLiteral(resourceName: "galeria"),#imageLiteral(resourceName: "convenio"),#imageLiteral(resourceName: "ubicacion"),#imageLiteral(resourceName: "contacto")]

    override func viewDidLoad() {

        super.viewDidLoad()

        self.tableView.dataSource = self
        self.tableView.delegate = self

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()

        // Dispose of any resources that can be recreated.
    }

    // MARK: - Table view data source
    override func numberOfSections(in tableView: UITableView) -> Int {
        // #warning Incomplete implementation, return the number of sections
        return 1
    }


    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        // #warning Incomplete implementation, return the number of rows
        return titulos.count

    }

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell")
        cell?.imageView!.image = imagenes[indexPath.row]
        cell?.textLabel?.text = titulos[indexPath.row]

        return cell!
    }

    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {

        let alert = UIAlertController(title: "Celda seleccionada", message: "Se selecciono la celda \(indexPath.row)",preferredStyle: .alert)

        let okAction = UIAlertAction(title: "Ok", style: .default, handler: nil)

        alert.addAction(okAction)
        self.present(alert, animated: true, completion: nil)
    }

这是我的 didSelectRowAt 方法,我在其中编程了一个警报,该警报将向我显示我正在编程的单元格:

override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {

        let alert = UIAlertController(title: "Celda seleccionada", message: "Se selecciono la celda \(indexPath.row)",preferredStyle: .alert)

        let okAction = UIAlertAction(title: "Ok", style: .default, handler: nil)

        alert.addAction(okAction)        
        self.present(alert, animated: true, completion: nil)   
   }

这是准备方法,在该方法中,我尝试恢复选定的单元并编程是否可以使用我的segue:

overrider func prepare(for segue: UIStoryboardSegue, sender: Any?){

    if let indexPath = tableView.indexPathForSelectedRow{
        let selectedRow = indexPath.row
            if(selectedRow == 0){
               segue.destination as? CajadeAhorroViewController 
            }
    }

}

我的搜索的标识符是“ caja”:

enter image description here

1 个答案:

答案 0 :(得分:1)

我认为您只想在tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)函数中执行搜索...

override func tableView(_ tableView: UITableView, 
           didSelectRowAt indexPath: IndexPath) {
    switch indexPath.row {
    case 0:
        performSegue(withIdentifier: "caja", sender: nil)
    case 1:
        performSegue(withIdentifier: "whatever you set this identifier to", sender: nil)
    // cases for all the different rows...
    }
}

如果只有一个segue,并且需要切换视图控制器的变量,则根据所选单元格的显示方式会有所不同

overrider func prepare(for segue: UIStoryboardSegue, sender: Any?){
    if let indexPath = tableView.indexPathForSelectedRow,
       let destination = segue.destination as? CajadeAhorroViewController {
        switch indexPath.row {
        case 0:
            // destination is the "CajadeAhorroViewController", set its properties for how you want it.
        case 1: 
        // ... all 7 cases ...
        }
    }
}