这里不讨论JSONModel和Alamofire这两个项目，直接上代码
BaseModel.h
#import
"
JSONModel.h
"
@interface BaseModel : JSONModel
-(instancetype)initWithDictionary:(NSDictionary*)dict;
@end
BaseModel.m
#import
"
BaseModel.h
"
@implementation BaseModel
//
Make all model properties optional (avoid if possible)
+(BOOL)propertyIsOptional:(NSString*)propertyName
{
return YES;
}
-(instancetype)initWithDictionary:(NSDictionary*)dict {
return (self = [[super init] initWithDictionary:dict error:nil]);
}
@end
所有的Model都要继承BaseModel，其他写法都一样
BaseAPI.swift
internal func requestModel<T: BaseModel>(method: Method, _ URLString: URLStringConvertible, parameters: [String: AnyObject]? = nil, success: (T) -> Void, failure: (NSError?) -> Void) {
mHttpManager.request(method, URLString , parameters: parameters, encoding: ParameterEncoding.JSON)
.responseJSON { (request, response, data, error)
in
if error == nil {
if let dict = data
as? NSDictionary {
if let model = T(dictionary: dict
as [NSObject : AnyObject]) {
success(model)
return
}
}
}
failure(error)
}
}
internal func requestArray<T: BaseModel>(method: Method, _ URLString: URLStringConvertible, parameters: [String: AnyObject]? = nil, success: (Array<T>) -> Void, failure: (NSError?) -> Void) {
mHttpManager.request(method, URLString , parameters: parameters, encoding: ParameterEncoding.JSON)
.responseJSON { (request, response, data, error)
in
if error == nil {
if let array = data
as? NSArray {
if let result = T.arrayOfModelsFromDictionaries(array
as [AnyObject]).copy()
as? Array<T>{
success(result)
return
}
}
}
failure(error)
}
}
代码说明
1、mHttpManager这个是Alamofire的Manager对象
2、注意服务端的返回的数据格式，这里支持Model和Array<Model>
3、注意在Swift里面NSDictionary转Model，用T(dictionary: dict as [NSObject : AnyObject])，这个T就是具体的泛型类型
4、注意在Swift里面NSArray转Model数组，用T.arrayOfModelsFromDictionaries(array as [AnyObject]).copy() as? Array<T>，注意不要用BaseModel. arrayOfModelsFromDictionaries（编译不会报错但是类型转不出来）
5、具体用法：
public func casts(success: (Array<CustomModel>) -> Void, failure: (NSError?) -> Void) {
requestArray(Method.GET, URL_CASTS, parameters: nil, success: success, failure: failure)
}
public func like(id: String, success: (CustomModel) -> Void, failure: (NSError?) -> Void) {
requestModel(Method.PATCH, String(format: URL_CASTS_LIKE, id), parameters: nil, success: success, failure: failure)
}
非常轻松和简单， 可以少写很多重复代码。
后期维护
2015-05-20 Alamofire兼容iOS7有点问题，设置head不管用，请参考我另外一篇文章：【iOS】Alamofire库在iOS7下设置Head无效的问题
2016-04-21
错误：fatal error: NSArray element failed to match the Swift Array Element type，参考帖子这里。
Swift 中使用不支持嵌套 JSONModel 数组
@property (strong, nonatomic) NSArray<App *> *apps;
@property (strong, nonatomic) NSArray<User *> *users;
解决办法：
@property (strong, nonatomic) NSArray<NSDictionary *> *apps;
@property (strong, nonatomic) NSArray<NSDictionary *> *users;
然后在 Swift 这边转一下
self.users = users.map{ User(dictionary: $
0 ) }
self.apps = apps.map{ App(dictionary: $
0 ) }
本文转自博客园农民伯伯的博客，原文链接：【iOS】在Swift中使用JSONModel，如需转载请自行联系原博主。
