The dependency `AFNetworking ` is not used in any concrete target

今天終於更新到最新版CocoaPods 1.0.0

結果所有pod都報錯
The dependency `pod名稱 ` is not used in any concrete target

原來是新版CocoaPods的Podfile要開始指定target了
記錄一下新舊版差別，給遇到的人參考

舊版


新版

AFHTTPSessionManager does not pass JSON error responses to failure block

AFHTTPSessionManager does not pass JSON error responses to failure block
以往採用AFNetworking 2.x呼叫API後，無論在success或failure的block，都可以取得http response資訊，從而依需求取得所需的資訊，像是API執行失敗後回拋的說明資料等等
但大升級到AFNetworking 3.x後，發現failure block不再提供response相關資訊，其實是全部統一包進NSError了，二種版本的差異如下

AFNetworking 2.x
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager POST:url parameters:params success:^(AFHTTPRequestOperation *operation ,id JSON) {
  // do something if success
 } failure:^(AFHTTPRequestOperation *operation , NSError *error) {
  // do something if failure
        NSData *data = [operation.responseString dataUsingEncoding:NSUTF8StringEncoding];
        id dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];
        [self showJWTError:[dict objectForKey:@"error_description"]];
}];

AFNetworking 3.x
[manager POST:url parameters:params progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
// do something if success
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
  // do something if failure
        NSData *data = error.userInfo[AFNetworkingOperationFailingURLResponseDataErrorKey];
        NSDictionary *serializedData = [NSJSONSerialization JSONObjectWithData: data options:kNilOptions error:nil];
        [self showJWTError:[serializedData objectForKey:@"error_description"]];
}];

ps: showJWTError是我用來呈現錯誤資訊給用戶的自訂方法