sudo rm -rf ~/Library/Developer/Xcode/iOS\ DeviceSupport/*
Category: Swift / SwiftUI
DispatchQueue.main.async
DispatchQueue.main.asyncでjsonを参照する。
override func viewDidLoad() {
super.viewDidLoad()
let stringUrl = "http://hpscript.com/swift/index.php"
do {
guard let url = URL(string: stringUrl) else { return }
URLSession.shared.dataTask(with: url){(data, response, error) in
if error != nil {
print(error!.localizedDescription)
}
guard let data = data else { return }
let json = try! JSONDecoder().decode([JsonSample].self, from: data)
DispatchQueue.main.async {
self.label.text = json[0].name //←ここでjsonを参照する
}
}.resume()
} catch{
}
}
jsonはcodableを使う。
なるほど!行けるか？？？行ければandroidへ直ぐにGo
swift4 – mysqlを設計していく
どうしてもやりたい
表示したいこと
Category: Audio Player
Brand: AKG
Name:AKG K77 PERCEPT
Price: 40
condition: 30
Left: 300
Bit : 1
まず、mysqlのテーブルを作っていく
create table product( category varchar(255), brand varchar(255), name varchar(255), price int, condition varchar(255), timeleft int, bit int, );
データを入れる。
INSERT INTO `product` (`category`, `brand`, `name`, `price`, `con`, `tleft`, `bit`) VALUES ('Audio Player', 'AKG', 'AKG K77 PERCEPT', '40', 'new', '300', '1');
sessin.dataTaskにいよるget
override func viewDidLoad() {
super.viewDidLoad()
let stringUrl = "http://hpscript.com/swift/index.php"
let url = URL(string: stringUrl)
let request = URLRequest(url: url!)
let session = URLSession(configuration: URLSessionConfiguration.default, delegate: nil, delegateQueue: OperationQueue.main)
let task:URLSessionDataTask = session.dataTask(with: request, completionHandler: {(data, response, error) in
if error != nil {
print(error!)
return
}
DispatchQueue.main.async{
}
})
task.resume()
// Do any additional setup after loading the view, typically from a nib.
}
SwiftyJSONをダウンロードしよう
JSONにはSwiftyJSONを使っている、と言うことでgithubからswiftyJSONをダウンロードします。
zipでdownloadして、SwiftyJSON-master -> Source のSwiftyJSON.swiftを抜き取ります。
JSONDecoderがうまく行かない
override func viewDidLoad() {
super.viewDidLoad()
let listUrl = "http://hpscript.com/swift/index.php"
do {
guard let url = URL(string: listUrl) else { return }
URLSession.shared.dataTask(with: url){(data, response, error) in
if error != nil {
print(error!.localizedDescription)
}
guard let data = data else { return }
let json = try? JSONDecoder().decode([JsonSample].self, from: data)
}.resume()
} catch{
}
self.label.text = json[0].name
// Do any additional setup after loading the view, typically from a nib.
}
なぜだ!!!!?
swift4でmysqlからfetchしたjsonを取得する
まず、mysqlからpdoでselectして、jsonにする。
$response = array();
$dsn = "mysql:dbname=app;host=";
$user = "";
$password = "";
try {
$dbh = new PDO($dsn, $user, $password);
} catch (PDOException $e){
print('connection failed:'.$e->getMessage());
}
$sql = "select * from swift";
$stmt = $dbh->query($sql);
$i = 0;
foreach($stmt as $value){
$response[$i]['name'] = $value['name'];
$response[$i]['member'] = $value['member'];
$i++;
}
echo json_encode($response);
echo "finish";
勿論ここまではOK
問題は、x-codeで取得して、どう表示するか。
swift4からmysqlにinsertする
uiview.controller
let URL_SAVE_BOY = "hoge"
@IBOutlet weak var NameFeild: UITextField!
@IBOutlet weak var oldFeild: UITextField!
@IBAction func saveBtn(_ sender: Any) {
let requestURL = NSURL(string: URL_SAVE_BOY)
let request = NSMutableURLRequest(url: requestURL! as URL)
request.httpMethod = "POST"
let teamName = NameFeild.text
let memberOld = oldFeild.text
let postParameters = "name="+teamName!+"&old="+memberOld!;
request.httpBody = postParameters.data(using: String.Encoding.utf8)
let task = URLSession.shared.dataTask(with: request as URLRequest){
data, response, error in
if error != nil {
print("error is \(error)")
return;
}
do {
let myJSON = try JSONSerialization.jsonObject(with: data!, options: .mutableContainers) as? NSDictionary
if let parseJSON = myJSON {
var msg : String!
msg = parseJSON["message"] as! String?
print(msg)
}
} catch {
print(error)
}
}
task.resume()
}
php側
$response = array();
if($_SERVER['REQUEST_METHOD'] == 'POST'){
$teamName = $_POST['name'];
$member = $_POST['old'];
}
$dsn = "mysql:dbname=db;host=hostname";
$user = "username";
$password = "pwd";
try {
$dbh = new PDO($dsn, $user, $password);
} catch (PDOException $e){
print('connection failed:'.$e->getMessage());
}
$sql = "insert into swift (name, member) VALUES (:name, :member)";
$stmt = $dbh->prepare($sql);
$stmt->bindParam(':name', $teamName, PDO::PARAM_STR);
$stmt->bindValue(':member', $member, PDO::PARAM_INT);
$stmt->execute();
$response['api'] = "succeeded";
$response['member'] = $member . " years old!";
echo json_encode($response);
echo "finish";
エミュレーターでyyyy, 55と入れます。
DB側
今回は,phpadmin
ちゃんと入っています。
次は、
1.mysqlからfetch。
2.配列をtable viewから表示
3.ec2から接続する
4.androidのDB接続
5.photoshopのエレメントをxcodeに乗せてく
6.app構築
7.app storeに申請
ってところか。
う〜、、、やること思ってたより多い。
table view
table viewでインド人に作ってもらった。
import UIKit
class CategoryListVC: UIViewController,UITableViewDataSource,UITableViewDelegate {
//MARK:- IBOutlets
@IBOutlet var tblCategoryList: UITableView!
//MARK:- Variables
var arrCategoryListData = NSMutableArray()
override func viewDidLoad() {
super.viewDidLoad()
self.setupUI()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
//MARK:- SetUp UI
func setupUI() -> Void {
self.tblCategoryList.delegate = self
self.tblCategoryList.dataSource = self
self.arrCategoryListData = [["Name":"Motors"],["Name":"Fashion"],["Name":"Electronics"],["Name":"Collectibles & Art"],["Name":"Home & Garden"],["Name":"Sporting Goods"],["Name":"Toys & Hobbies"],["Name":"Bussiness & Industrial"],["Name":"Music"]]
self.tblCategoryList.reloadData()
}
//MARK:- UITableView Related Methods
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 50
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.arrCategoryListData.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "TableViewFOrCategoryListing", for: indexPath) as! TableViewFOrCategoryListing
guard let dictCell = self.arrCategoryListData.object(at: indexPath.row) as? NSDictionary else {
return cell
}
if let price = dictCell.value(forKey: "Name") {
cell.lblCategoryName.text = String(describing: price)
}
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.deselectRow(at: indexPath, animated: true)
guard let dictCell = self.arrCategoryListData.object(at: indexPath.row) as? NSDictionary else {
return
}
if let objView = self.storyboard?.instantiateViewController(withIdentifier: "ViewController") as? ViewController {
objView.dictForCategoryDetails = dictCell
self.navigationController?.pushViewController(objView, animated: true)
}
}
}
class TableViewFOrCategoryListing: UITableViewCell {
@IBOutlet var lblCategoryName: UILabel!
}
やべー、俺も早く頑張らないと。。
swift4でARアプリを作ろう
まず、Augmented Reality Appを選択する必要がある。
AppDelegate.swift, ViewController.swift, Main.storyboard, LaunchScreen.storyboard, Info.plist は同じだが、art.scnassetsが追加されている。
viewController.swift
デフォルトでvr体験できるようになってますね。
import UIKit
import SceneKit
import ARKit
class ViewController: UIViewController, ARSCNViewDelegate {
@IBOutlet var sceneView: ARSCNView!
override func viewDidLoad() {
super.viewDidLoad()
// Set the view's delegate
sceneView.delegate = self
// Show statistics such as fps and timing information
sceneView.showsStatistics = true
// Create a new scene
let scene = SCNScene(named: "art.scnassets/ship.scn")!
// Set the scene to the view
sceneView.scene = scene
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
// Create a session configuration
let configuration = ARWorldTrackingConfiguration()
// Run the view's session
sceneView.session.run(configuration)
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
// Pause the view's session
sceneView.session.pause()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Release any cached data, images, etc that aren't in use.
}
// MARK: - ARSCNViewDelegate
/*
// Override to create and configure nodes for anchors added to the view's session.
func renderer(_ renderer: SCNSceneRenderer, nodeFor anchor: ARAnchor) -> SCNNode? {
let node = SCNNode()
return node
}
*/
func session(_ session: ARSession, didFailWithError error: Error) {
// Present an error message to the user
}
func sessionWasInterrupted(_ session: ARSession) {
// Inform the user that the session has been interrupted, for example, by presenting an overlay
}
func sessionInterruptionEnded(_ session: ARSession) {
// Reset tracking and/or remove existing anchors if consistent tracking is required
}
}