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let recipeVC = recipeViewController()
recipeVC.navigationController?.title = "caipi"
let recipeNav = UINavigationController(rootViewController: recipeVC)
self.window?.rootViewController = recipeNav
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import UIKit
class URlService: NSObject
{
// 所有的请求搜索的菜谱数据
func searchRecipes(search:String,vc:UIViewController,completion:@escaping (Any,Bool) -> Void)
{
// (1) 判断无网络情况
if Reachability.forLocalWiFi().currentReachabilityStatus() == NotReachable && Reachability.forInternetConnection().currentReachabilityStatus() == NotReachable {
vc.showAlert(msg: "网络错误", sec: 2.5)
completion("error",false)
return
}
//有网络菊花开始转动
// 状态栏中的菊花开始转动
UIApplication.shared.isNetworkActivityIndicatorVisible = true
// 网址字符串封装
let url = URL.init(string: "http://api.jisuapi.com/dream/search")
// (4)创建请求对象
var req = URLRequest.init(url: url!, cachePolicy: .reloadRevalidatingCacheData, timeoutInterval: 15.0)
// 设置请求方式为post
req.httpMethod = "POST"
// 将所有的参数拼接成一个字符串
let str = "keyword=\(search)&num=10&appkey=de394933e1a3e2db"
// 设值请求对象的请求体
req.httpBody = str.data(using: .utf8)
// (5)会话对象请求网络数据
URLSession.shared.dataTask(with: req) { (data, response, error) in
// 停止菊花
DispatchQueue.main.async {
UIApplication.shared.isNetworkActivityIndicatorVisible = false
}
// 如果连接失败
if error != nil{
DispatchQueue.main.async {
vc.showAlert(msg: "服务器超市", sec: 2.5)
}
return
}
// 如果服务器连接成功 JSON解析
let jsonData = try? JSONSerialization.jsonObject(with: data!, options: .allowFragments)
if jsonData == nil{
DispatchQueue.main.async {
vc.showAlert(msg: "网路数据错误", sec: 2.5)
}
return
}
// 如果正确,将解析的json数据返回给controller
// completion(jsonData!,true)
let jsonDic = jsonData as! NSDictionary
let status = jsonDic.value(forKey: "status") as! NSString
let msg = jsonDic.value(forKey: "msg")as! String
// 判断是否为零
if status.intValue != 0{
DispatchQueue.main.async {
vc.showAlert(msg: msg, sec: 2.5)
}
return
}
let resultDic = jsonDic.value(forKey: "result") as! NSDictionary
// 获取result字典中的list数组
let listArr = resultDic.value(forKey: "list") as! NSArray
// MOdel封装
var modelArr:[Recipe] = []
// 遍历数组中的每个字典
for item in listArr{
let itemDic = item as! NSDictionary
let one = Recipe()
one.name = itemDic.value(forKey: "name") as? String
one.id = itemDic.value(forKey: "id") as? String
one.content = itemDic.value(forKey: "content") as? String
modelArr.append(one)
}
completion(modelArr,true)
}.resume()
}
}
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var id:String?
var classid:String?
var name:String?
var peoplenum:String?
var preparetime:String?
var content:String?
444
//给UIViewController添加扩展
extension UIViewController{
func showAlert(msg:String,sec:TimeInterval) {
// 实例化一个弹出控制器
let alertVC = UIAlertController(title: nil, message: msg, preferredStyle: .alert)
// 从vc控制器弹出提示控制器
self.present(alertVC, animated: true, completion: nil)
// 延时执行隐藏操作
self.perform(#selector(hideAlertVc(sender:)), with: alertVC, afterDelay: sec)
}
@objc func hideAlertVc(sender:UIAlertController) {
sender.dismiss(animated: true, completion: nil)
}
}
recipeTF = UITextField(frame: CGRect(x: 0, y: 0, width: 200, height: 50))
recipeTF?.center = CGPoint(x: scrWidth/2, y: 200)
recipeTF?.borderStyle = .line
recipeTF?.placeholder = "请输入查询的菜谱"
recipeTF?.textColor = UIColor.red
recipeTF?.clearButtonMode = .unlessEditing
recipeTF?.delegate = self
self.view.addSubview(self.recipeTF!)
searchBtn = UIButton(frame: CGRect(x: 0, y: 0, width: 100, height: 50))
searchBtn?.center = CGPoint(x: scrWidth/2, y: 300)
searchBtn?.setTitle("点击查询", for: .normal)
searchBtn?.backgroundColor = UIColor.blue
searchBtn?.setTitleColor(UIColor.yellow, for: .normal)
searchBtn?.addTarget(self, action: #selector(btnDidpress(sender:)), for: .touchUpInside)
self.view.addSubview(searchBtn!)
@objc func btnDidpress(sender:UIButton) {
//判断用户有没有输入数据
if(recipeTF?.text?.isEmpty)!{
self.showAlert(msg: "信息不可为空", sec: 2.5)
return
}
// 实例化一个控制器对象
let resultVC = RecipeResultViewController()
// 传递数据
resultVC.passString = (recipeTF?.text)!
// 控制器跳转
self.navigationController?.pushViewController(resultVC, animated: true)
override func touchesBegan(_ touches: Set, with event: UIEvent?) {
super.touchesEnded(touches, with: event)
recipeTF?.resignFirstResponder()
//让view 还有子视图放弃编辑操纵,如果是textField就收回键盘
self.view.endEditing(true)
555
import UIKit
class RecipeResultViewController: UIViewController,UITableViewDataSource {
var passString:String = ""
var tableData:[Recipe]?
var table:UITableView?
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
self.view.backgroundColor = UIColor.blue
self.navigationItem.title = "\"\(passString)\"的搜索结果"
table = UITableView.init(frame: CGRect.init(x: 0, y: 0, width:scrWidth , height: scrHeight),style:.plain)
table?.dataSource = self
// self.table?.rowHeight = 200
self.view.addSubview(self.table!)
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if let count = tableData?.count{
return count
}
return 0
// return(tableData?.count)!
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let identifier = "cell"
var cell = tableView.dequeueReusableCell(withIdentifier: identifier)
if cell == nil {
cell = UITableViewCell.init(style: .subtitle, reuseIdentifier: identifier)
}
let one = self.tableData![indexPath.row] as? Recipe
cell?.textLabel?.text = one?.name
cell?.detailTextLabel?.text = one?.content
return cell!
}
$(SRCROOT)/
最后网络请求 nsapp
override func viewWillAppear(_ animated: Bool) {
// 请求网络数据
let urlSer = URlService()
urlSer.searchRecipes(search: self.passString, vc: self) { (data, success) in
if !success{
return
}
self.tableData = data as?[Recipe]
DispatchQueue.main.async {
self.table?.reloadData()
}
}
}
}
