1.我们的很多框架都使用mvc这种经典的框架去搭建项目了，这里主要讲下mvvm的框架了：
2.mvvm框架是新出来的一种设计框架了，我们这里可以理解下：
controller -----> view--------->model viewModel (这个里面就是controller的逻辑出来)---->view（） ------>model（这里是执行数据的操作处理呀）
3.看代码的：
model:
@property(nonatomic,copy)NSString*intro;
@property(nonatomic,copy)NSString*kpic;
@property(nonatomic,copy)NSString*longTitle;
cell代码：
- (void)setModel:(IconModle*)model{
_model= model;
_titleLable.text=_model.intro;
_longTitle.text=_model.longTitle;
NSURL*url=[NSURLURLWithString:_model.kpic];
[_IconImageViewsd_setImageWithURL:url];
}
viewmodel：
viewmodel.h:
typedefvoid(^returnValueBlock) (idreturnValue);
typedefvoid(^returenErrorCodeBlock) (iderrorCode);
@interfaceIconViewModle :NSObject
@property(nonatomic,copy)returnValueBlockreturnValue;
@property(nonatomic,copy)returenErrorCodeBlockerrorCode;
-(void)getIconData;
viewmodel.m
-(void)getIconData{
AFHTTPSessionManager*manager = [AFHTTPSessionManagermanager];
[managerGET:@"http://newsapi.sina.cn/?resource=feed&accessToken=&chwm=3023_0001&city=CHXX0008&connectionType=2&deviceId=3d91d5d90c90486cde48597325cf846b699ceb53&deviceModel=apple-iphone5&from=6053093012&idfa=7CE5628E-577A-4A0E-B9E5-283217ECA1F1&idfv=10E31C9D-59AE-4547-BDEF-5FF3EA045D86&imei=3d91d5d90c90486cde48597325cf846b699ceb53&location=39.998602%2C116.365189&osVersion=9.3.5&resolution=640x1136&token=61903050f1141245bfb85231b58e84fb586743436ceb50af9f7dfe17714ee6f7&ua=apple-iphone5__SinaNews__5.3__iphone__9.3.5&weiboSuid=&weiboUid=&wm=b207&rand=221&urlSign=3c861405dd&behavior=manual&channel=news_pic&lastTimestamp=1473578882&listCount=20&p=1&pullDirection=down&pullTimes=8&replacedFlag=1&s=20"parameters:nilprogress:^(NSProgress*_NonnulldownloadProgress) {
}success:^(NSURLSessionDataTask*_Nonnulltask,id_NullableresponseObject) {
NSLog(@"........get请求url:%@",responseObject);
NSDictionary*dic = responseObject[@"data"];
NSArray*subjects = dic[@"feed"];
NSMutableArray*modelArr = [NSMutableArrayarrayWithCapacity:subjects.count];
for(NSDictionary*subjectindic[@"feed"])
{
IconModle*icon=[[IconModlealloc]init];
icon.intro= subject[@"intro"];
icon.kpic= subject[@"kpic"];
icon.longTitle= subject[@"longTitle"];
[modelArraddObject:icon];
}
_returnValue(modelArr);
}failure:^(NSURLSessionDataTask*_Nullabletask,NSError*_Nonnullerror) {
NSLog(@"error = %@", error);
}];
}
controller的代码：
- (void)viewDidLoad {
self.title=@"MVVM例子二";
[superviewDidLoad];
[selfsetupUI];
}
-(void)setupUI{
UITableView*table=[[UITableViewalloc]initWithFrame:self.view.bounds];
table.delegate=self;
table.dataSource=self;
table.rowHeight=300;
table.tableFooterView=[UIViewnew];
[self.viewaddSubview:table];
IconViewModle*ViewModle=[[IconViewModlealloc]init];
ViewModle.returnValue=^(idreturnValeu){
_modelArray=returnValeu;
[tablereloadData];
};
ViewModle.errorCode=^(iderrorCode){
};
[ViewModlegetIconData];
}
-(NSInteger)tableView:(UITableView*)tableView numberOfRowsInSection:(NSInteger)section
{
return_modelArray.count;
}
-(UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath
{
staticNSString* identifer =@"IconCell";
IconCell* cell = [tableViewdequeueReusableCellWithIdentifier:identifer];
if(!cell)
{
NSArray*array = [[NSBundlemainBundle]loadNibNamed:@"IconCell"owner:niloptions:nil];
cell=[arrayobjectAtIndex:0];
}
cell.model=_modelArray[indexPath.row];
returncell;
}
总结下：viewmodel :里面写的controller的逻辑处理的方法了 view 里面写的是数据的获取的方法