iOS学习

花匠小妙招
2024-12-26 14:27

1.) click item navigation to adding view controller before

adding a new segue ( table view cell -> Detail View controller) named : EditTodo

screen:

code:

//
// DetailViewController.swift
// Todo
//
// Created by Ricky Choi on 16/6/3.
// Copyright © 2016年 worm. All rights reserved.
//

import UIKit

class DetailViewController: UIViewController, UITextFieldDelegate {

@IBOutlet weak var childButton: UIButton!
@IBOutlet weak var phoneButton: UIButton!
@IBOutlet weak var shoppingCartButton: UIButton!
@IBOutlet weak var travelButton: UIButton!

@IBOutlet weak var todoItem: UITextField!
@IBOutlet weak var todoDate: UIDatePicker!

var todo: TodoModel?

override func viewDidLoad() {
super.viewDidLoad()

todoItem.delegate = self
// Do any additional setup after loading the view.

if todo == nil {
childButton.selected = true
navigationItem.title = "新增Todo"
}
else {
navigationItem.title = "修改Todo"
if todo?.image == "child-selected" {
childButton.selected = true
}
else if todo?.image == "shopping-cart-selected" {
shoppingCartButton.selected = true
}
else if todo?.image == "phone-selected" {
phoneButton.selected = true
}
else if todo?.image == "travel-selected" {
travelButton.selected = true
}

todoItem.text = todo?.title
todoDate.setDate((todo?.date)!, animated: false)
}

}

override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}

func resetButtons() {

childButton.selected = false
phoneButton.selected = false
shoppingCartButton.selected = false
travelButton.selected = false
}

@IBAction func childTapped(sender: AnyObject) {
resetButtons()
childButton.selected = true
}

@IBAction func phoneTapped(sender: AnyObject) {
resetButtons()
phoneButton.selected = true
}

@IBAction func shoppingCartTapped(sender: AnyObject) {
resetButtons()
shoppingCartButton.selected = true
}

@IBAction func TravelTapped(sender: AnyObject) {
resetButtons()
travelButton.selected = true
}

@IBAction func okTapped(sender: AnyObject) {
var image = ""
if childButton.selected {
image = "child-selected"
}
else if phoneButton.selected {
image = "phone-selected"
}
else if shoppingCartButton.selected {
image = "shopping-cart-selected"
}
else if travelButton.selected {
image = "travel-selected"
}

if todo == nil {

//let uuid = NSUUID.UUID().UUIDString
let uuid = NSUUID().UUIDString
var todo = TodoModel(id: uuid, image: image, title: todoItem.text!, date: todoDate.date)
todos.append(todo)
}
else {

todo?.image = image
todo?.title = todoItem.text!
todo?.date = todoDate.date
}
}

//Implement UITextfieldDelegae to close keyboard
func textFieldShouldReturn(textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true
}

//click parent container to close keyboard
override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
todoItem.resignFirstResponder()
}

/*
// MARK: - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/

}

ViewController.swift

//
// ViewController.swift
// Todo
//
// Created by Ricky Choi on 16/6/1.
// Copyright © 2016年 worm. All rights reserved.
//

import UIKit

var todos: [TodoModel] = []

func dateFromString(dateStr: String) -> NSDate? {
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "yyy-MM-dd"
let date = dateFormatter.dateFromString(dateStr)
return date
}

class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {

@IBOutlet weak var tableView: UITableView!

override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
todos = [TodoModel(id: "1", image: "child-selected", title: "1. 去游乐场", date: dateFromString("2014-11-2")!),
TodoModel(id: "2", image: "shopping-cart-selected", title: "2. 购物", date: dateFromString("2014-10-28")!),
TodoModel(id: "3", image: "phone-selected", title: "3. 打电话", date: dateFromString("2014-10-30")!),
TodoModel(id: "4", image: "travel-selected", title: "4. Travel to Europe", date: dateFromString("2014-10-31")!),
]

navigationItem.leftBarButtonItem = editButtonItem()
}

override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}

//Implement UITableviewDataSource
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
//return 50
return todos.count
}

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = self.tableView.dequeueReusableCellWithIdentifier("todoCell")! as UITableViewCell

var todo = todos[indexPath.row] as TodoModel

//get control from tag
var image = cell.viewWithTag(101) as! UIImageView
var title = cell.viewWithTag(102) as! UILabel
var date = cell.viewWithTag(103) as! UILabel

image.image = UIImage(named: todo.image)
title.text = todo.title

let locale = NSLocale.currentLocale()
let dateFormat = NSDateFormatter.dateFormatFromTemplate("yyyy-MM-dd", options: 0, locale: locale)
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = dateFormat
date.text = dateFormatter.stringFromDate(todo.date)

return cell
}

//Implement UITableviewDelegate

func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
if editingStyle == UITableViewCellEditingStyle.Delete {
todos.removeAtIndex(indexPath.row)
//self.tableView.reloadData()
self.tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Automatic)

}
}

//Edit Mode in navigation bar
override func setEditing(editing: Bool, animated: Bool) {
super.setEditing(editing , animated: animated)
self.tableView.setEditing(editing, animated: animated)
}

@IBAction func close(segue: UIStoryboardSegue) {
print("closed")
tableView.reloadData()
}

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "EditTodo" {
var vc = segue.destinationViewController as! DetailViewController
var indexPath = tableView.indexPathForSelectedRow
if let index = indexPath {
vc.todo = todos[index.row]
}
}

}