1.提取UILabel
##用閉包的形式把相關參數傳入,返回值類型UILabel
閉包寫法:函數名(相關屬性參數) -> 返回值類型 {}
##eg:
extension UILabel{
/// - Parameters:
/// - text: <#text description#>
/// - textColor: <#textColor description#>
/// - fontSize: <#fontSize description#>
/// - numberlines: <#numberlines description#>
/// - Returns: <#return value description#>
class func create(text:String?,textColor:UIColor = .lightGray,fontSize:CGFloat = 12,numberlines:Int = 1) -> UILabel{
let label = UILabel()
label.text = text
label.textColor = textColor
label.font = UIFont.systemFont(ofSize: fontSize)
label.numberOfLines = numberlines
label.sizeToFit()
return label
}
}
##UIButton:
extension UIButton {
class func yt_CreateButton(image:UIImage?, title:String?, titleColor: UIColor = .black, fontSize:CGFloat = 12.0) -> UIButton {
let button = UIButton()
button.setImage(image, for: .normal)
button.setTitle(title, for: .normal)
button.setTitleColor(titleColor, for: .normal)
button.titleLabel?.font = UIFont.systemFont(ofSize: fontSize)
return button
}
}
2.隔離網絡層
我們用到的是Alamofire,Alamofire就是swift版本的AFNetworking
###為什么要隔離網絡層?
舉個例子來說,加入現在項目中要換掉現在使用的請求網絡的方法,而我們沒有以前使用的時候把這些請求數據的
代碼散落在項目中的個個地方,那我們現在替換的時候花的時間和精力就會特別多~~而且還有可能導致各種錯誤;
但是我們隔離好網絡層后,我們只需在這個工具類里面替換方法,外面調用這個方法的類甚至都不需要修改,大大
提高了效率,減少了錯誤發生的幾率
###下面附上代碼
class AlamofireManager{
static let shared = AlamofireManager()
/// 返回值為字典的請求方式
///
/// - Parameters:
/// - url: 請求地址
/// - method: GET / POST
/// - parameters: 請求參數,字典,可選
/// - finnish: 回調(json:網絡請求回來的數據,isSuccess:是否有請求數據,有則回調)
func loadDic(url:String,method:YHTTPMethod,parameters: [String:AnyObject]?,finnish:@escaping (_ json:[String:AnyObject]?, _ isSuccess:Bool)->()) {
let gp = (method == YHTTPMethod.GET) ? HTTPMethod.get : HTTPMethod.post
Alamofire.request(url, method: gp, parameters: parameters, encoding: JSONEncoding.default, headers: nil).responseJSON { (response) in
print(response.result.value ?? 1)
guard let result = response.result.value as? [String:AnyObject] else{
finnish(nil ,false)
return
}
finnish(result,true)
}
}
/// 返回值為數組的請求方式
///
/// - Parameters:
/// - url: 請求地址
/// - method: GET / POST
/// - parameters: 請求參數,字典,可選
/// - finnish: 回調(json:網絡請求回來的數據,數組類型,isSuccess:是否有請求數據,有則回調)
func loadArr(url:String,method:HTTPMethod,parameters: [String:AnyObject]?,finnish:@escaping (_ json:[AnyObject]?, _ isSuccess:Bool)->()) {
Alamofire.request(url, method: method, parameters: parameters, encoding: JSONEncoding.default, headers: nil).responseJSON { (response) in
// print(response.result.value ?? 1)
// 數組的方法
guard let result = response.result.value as? [AnyObject] else{
finnish(nil ,false)
return
}
finnish(result,true)
}
}
fileprivate init(){} // 禁用掉init,只讓調用單例方法
}
3.調用隔離好的網絡層
創建一個ViewModel,寫上方便外面調用數據的方法,并創建一個數組,將所有的數據寫成模型放在數組中,下面附上代碼
class ViewModel {
var array = [Model]()
/// 請求方法
///
/// - Parameter complete: 閉包回調,通知通知控制器數據已準備完成
func loadData(complete:@escaping (_ finish:Bool)->()) {
/// 請求參數
// NetworkingManager.shared.request(URLString: <#T##String#>, parameter: <#T##[String : AnyObject]?#>, finish: <#T##(AnyObject?, Bool) -> ()#>)
let parames = ["XXX": "XXX",
"XXX": "XXX",
"XXX":XXX] as [String : AnyObject]
AlamofireManager.shared.loadDic(url: "XXX", method: .POST, parameters: parames ) { (json, isSuccess) in
if isSuccess {
// guard let data = try? JSONSerialization.data(withJSONObject: json ?? "", options: [.prettyPrinted]) else{
// complete(false)
// return
// }
//
// (data as NSData).write(toFile: "/Users/wu/Desktop/index.json", atomically: true)
guard let result = json?["data"] as? [[String:AnyObject]] else{
complete(false)
return
}
for dic in result{
self.array.append(Model(dic: dic))
}
complete(true)
}else{
complete(false)
}
}
}
}
###下面這段代碼,只是為了把網絡數據寫入本地,例如桌面上,方便查看數據源的數據
guard let data = try? JSONSerialization.data(withJSONObject: json ?? "", options: [.prettyPrinted]) else{
complete(false)
return
}
(data as NSData).write(toFile: "XXX.json", atomically: true)