Parse a slightly more complex piece of data

We can parse the data as shown, use the value of "name" as the header of the partition header, and use the circled dictionary as a model, and we will resolve it in two ways:

The first way is to use an array and a dictionary, which is used to store the value of "name" as a key; the dictionary is used to store all the data;

The second way is to use two arrays, where one array is used to store the value of "name", and the other array stores all the data;

Gossip: Directly on the code

The first way:

#import "RootTableViewController.h"#import "YHCell.h"@interfaceRoottableviewcontroller () @property (nonatomic, strong) Nsmutablearray*Allkeysarray, @property (nonatomic, strong) Nsmutabledictionary*alldatadict;@end@implementationRoottableviewcontroller//Lazy Loading-(Nsmutabledictionary *) alldatadict {if(!_alldatadict) {_alldatadict=[Nsmutabledictionary dictionary]; }    return_alldatadict;}-(Nsmutablearray *) Allkeysarray {if(!_allkeysarray) {_allkeysarray=[Nsmutablearray array]; }    return_allkeysarray;}- (void) viewdidload {[Super viewdidload]; Self.navigationItem.title=@"Travel"; Self.tableView.showsVerticalScrollIndicator=NO; //Data Processing[self loadwebdata]; //Register Cell[Self.tableview Registerclass:[yhcellclass] Forcellreuseidentifier:@"Cell"]; }//Data Processing- (void) Loadwebdata {nsurl*url = [Nsurl urlwithstring:@"http://api.yhouse.com/m/city/dynmiclist"]; Nsurlrequest*request =[Nsurlrequest Requestwithurl:url]; Nsurlsession*session =[Nsurlsession sharedsession]; Nsurlsessiontask*task = [Session datataskwithrequest:request completionhandler:^ (NSData * _nullable data, Nsurlresponse * _Nullable RESPO NSE, Nserror *_nullable Error) {        if(Error = =Nil) {Nsdictionary*dict =[nsjsonserialization jsonobjectwithdata:data options:nsjsonreadingallowfragments Error:nil]; Nsdictionary*dict1 = dict[@"Data"]; Nsarray*array = dict1[@"allcity"];  for(inti =0; i < Array.count; i++) {nsdictionary*dict2 =Array[i]; Nsmutablearray*dataarray =[Nsmutablearray array];  for(NSString *keyinchdict2) {                                        if([Key isequaltostring:@"name"]) {nsstring*value =Dict2[key];                    [Self.allkeysarray Addobject:value]; }                                        if([Key isequaltostring:@"Tabs"]) {                         for(Nsdictionary *dict3inchDict2[key]) {Model*model =[[Model alloc] init];                                                    [Model SETVALUESFORKEYSWITHDICTIONARY:DICT3];                        [DataArray Addobject:model]; }}} [Self.alldatadict Setobject:dataarray forkey:[self.allkeysarray las            TObject]];        } [Self.tableview Reloaddata];        }    }]; [Task resume];}//set Number of partitions-(Nsinteger) Numberofsectionsintableview: (UITableView *) TableView {returnSelf.dataHandle.allKeysArray.count;}//set the number of rows per partition-(Nsinteger) TableView: (UITableView *) TableView numberofrowsinsection: (nsinteger) Section {nsstring*key =Self.datahandle.allkeysarray[section]; Nsinteger Index=[Self.datahandle.alldatadict[key] count]; returnindex;}//Return to Cell-(UITableViewCell *) TableView: (UITableView *) TableView Cellforrowatindexpath: (Nsindexpath *) Indexpath {Yhcell*cell = [TableView dequeuereusablecellwithidentifier:@"Cell"Forindexpath:indexpath]; Model*model =[[Model alloc] init]; NSString*key =Self.datahandle.allkeysarray[indexpath.section]; Model=Self.datahandle.alldatadict[key][indexpath.row]; //Assigning a value to a cell[Cell Bindmodel:model]; returncell;}//Set Cell height-(CGFloat) TableView: (UITableView *) TableView Heightforrowatindexpath: (Nsindexpath *) Indexpath {return  -;}//Set Header header-(NSString *) TableView: (UITableView *) TableView titleforheaderinsection: (nsinteger) Section {returnself.datahandle.allkeysarray[section];}@end

The first way of parsing data in the middle can also be fully used Foin loop to parse, that is, it can also simplify a bit of code:

- (void) Loadwebdata {nsurl*url = [Nsurl urlwithstring:@"http://api.yhouse.com/m/city/dynmiclist"]; Nsurlrequest*request =[Nsurlrequest Requestwithurl:url]; Nsurlsession*session =[Nsurlsession sharedsession]; Nsurlsessiontask*task = [Session datataskwithrequest:request completionhandler:^ (NSData * _nullable data, Nsurlresponse * _Nullable RESPO NSE, Nserror *_nullable Error) {        if(Error = =Nil) {Nsdictionary*dict =[nsjsonserialization jsonobjectwithdata:data options:nsjsonreadingallowfragments Error:nil]; Nsdictionary*dict1 = dict[@"Data"]; Nsarray*array = dict1[@"allcity"];  for(Nsdictionary *dict2inchArray) {[Self.allkeysarray addobject:dict2[@"name"]]; Nsmutablearray*array1 =[Nsmutablearray array];  for(Nsdictionary *dict3inchdict2[@"Tabs"]) {Model*model =[[Model alloc] init];                    [Model SETVALUESFORKEYSWITHDICTIONARY:DICT3];                [Array1 Addobject:model];            } [Self.alldatadict setobject:array1 forkey:[self.allkeysarray Lastobject];    }} [Self.tableview Reloaddata];        }]; [Task resume];}

The second method:

#import "RootTableViewController.h"#import "YHCell.h"@interfaceRoottableviewcontroller () @property (nonatomic, strong) Nsmutablearray*Allkeysarray, @property (nonatomic, strong) Nsmutablearray*Alldataarray;@end@implementationRoottableviewcontroller//Lazy Loading-(Nsmutablearray *) Allkeysarray {if(!_allkeysarray) {_allkeysarray=[Nsmutablearray array]; }    return_allkeysarray;}-(Nsmutablearray *) Alldataarray {if(!_alldataarray) {_alldataarray=[Nsmutablearray array]; }    return_alldataarray;}- (void) viewdidload {[Super viewdidload]; Self.navigationItem.title=@"Travel"; Self.tableView.showsVerticalScrollIndicator=NO; //Data Processing[self loaddata]; //Register Cell[Self.tableview Registerclass:[yhcellclass] Forcellreuseidentifier:@"Cell"]; }//Data Processing- (void) LoadData {nsurl*url = [Nsurl urlwithstring:@"http://api.yhouse.com/m/city/dynmiclist"]; Nsurlsession*session =[Nsurlsession sharedsession]; Nsurlsessiontask*task = [Session Datataskwithurl:url completionhandler:^ (NSData * _nullable data, Nsurlresponse * _nullable response, NSEr ROR *_nullable Error) {Nsdictionary*dict =[nsjsonserialization jsonobjectwithdata:data options:nsjsonreadingallowfragments Error:nil]; Nsdictionary*dict1 = dict[@"Data"]; Nsarray*array = dict1[@"allcity"];  for(Nsdictionary *dict2inchArray) {Nsmutablearray*array1 =[Nsmutablearray array]; [Self.allkeysarray addobject:dict2[@"name"]];  for(Nsdictionary *dict3inchdict2[@"Tabs"]) {Model*model =[[Model alloc] init];                [Model SETVALUESFORKEYSWITHDICTIONARY:DICT3];            [Array1 Addobject:model];        } [Self.alldataarray Addobject:array1];            } [Self.tableview Reloaddata];        }]; [Task resume];}//Number of partitions-(Nsinteger) Numberofsectionsintableview: (UITableView *) TableView {returnSelf.allKeysArray.count;}//number of rows per partition-(Nsinteger) TableView: (UITableView *) TableView numberofrowsinsection: (nsinteger) Section {return[Self.alldataarray[section] count];}//Return to Cell-(UITableViewCell *) TableView: (UITableView *) TableView Cellforrowatindexpath: (Nsindexpath *) Indexpath {Yhcell*cell = [TableView dequeuereusablecellwithidentifier:@"Cell"Forindexpath:indexpath]; Model*model =[[Model alloc] init]; Nsarray*array =Self.alldataarray[indexpath.section]; Model=Array[indexpath.row]; //Assigning a value to a cell[Cell Bindmodel:model]; returncell;}//Set Cell height-(CGFloat) TableView: (UITableView *) TableView Heightforrowatindexpath: (Nsindexpath *) Indexpath {return  -;}//Set Header header-(NSString *) TableView: (UITableView *) TableView titleforheaderinsection: (nsinteger) Section {returnself.allkeysarray[section];}@end

Parse a slightly more complex piece of data