1.创建一个类NSurlSevice
创建一个方法
func getNew(channel:String,starNum:Int,complation:@escaping (Any,Bool) -> Void) -> Void {
//网址
var strUrl = "http://api.jisuapi.com/news/get?channel=\(channel)&start=\(starNum)&num=10&appkey=de394933e1a3e2db"
//转码
strUrl = strUrl.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlFragmentAllowed)!
//转化为url类型
let url = URL(string: strUrl)
//把url封装成nsurlquest
let request = URLRequest(url: url!, cachePolicy: .reloadIgnoringCacheData, timeoutInterval: 15.0)
//用URLsession请求网络数据
let task:URLSessionDataTask = URLSession.shared.dataTask(with: request) { (data, resposen, error) in
//错误判断
if error != nil{
complation("网络服务器错误", false)
return
}
//解析
let jsonData = try? JSONSerialization.jsonObject(with: data!, options: JSONSerialization.ReadingOptions.allowFragments)
if jsonData == nil{
complation("网络解析错误", false)
return
}
//解析成功
let status = (jsonData as! NSDictionary).value(forKey: "status") as! String
let msg = (jsonData as! NSDictionary).value(forKey: "msg") as! String
if Int(status) != 0 {
complation(msg, false)
return
}
let result = (jsonData as! NSDictionary).value(forKey: "result") as! NSDictionary
let list = result.value(forKey: "list") as! NSArray
var newarr:[News] = []
for item in list{
let dic = item as! NSDictionary
let oneNew = News()
oneNew.title = dic.value(forKey: "title") as! String
oneNew.content = dic.value(forKey: "content") as! String
oneNew.time = dic.value(forKey: "time") as! String
print("解析1:\(oneNew.title)")
print("解析2:\(oneNew.content)")
print("解析3:\(oneNew.time)")
newarr.append(oneNew)
}
complation(newarr, true)
}
task.resume()
}
2.创建一个继承与UITableViewCell
var img: UIImageView?
var Zlable:UILabel?
var Flabel:UILabel?
var Time:UILabel?
func showint() -> Void {
img = UIImageView(frame: CGRect(x: 5, y: 5, width: 90, height: 90))
img?.backgroundColor = .red
self.contentView.addSubview(img!)
Zlable = UILabel(frame: CGRect(x: 110, y: 20, width: 170, height: 40))
Zlable?.font = UIFont(name: "ni", size: 29)
Zlable?.backgroundColor = UIColor.blue
contentView.addSubview(Zlable!)
Flabel = UILabel(frame: CGRect(x: 110, y: 65, width: 70, height: 30))
Flabel?.backgroundColor = UIColor.orange
contentView.addSubview(Flabel!)
Time = UILabel(frame: CGRect(x: 280, y: 30, width: 80, height: 20))
Time?.backgroundColor = UIColor.yellow
contentView.addSubview(Time!)
}
override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
super.init(style: UITableViewCellStyle.default, reuseIdentifier: reuseIdentifier)
self.showint()
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
3.在viewcontroller中调用
图3中的方法在viewWillAppear中调用
4.在tableview中注册注册cell
TableView.register(TableViewCell.classForCoder(), forCellReuseIdentifier: "xuwen")
