[英]UITableViewController with Json
i'm trying to fill a tableview with a Json response this is the Json that i'm reading from the callback 我正在尝试用Json响应填充表格视图,这是我从回调中读取的Json
{
"Categories": {
"Beer": [
{
"id": "3",
"nombre": "Bud ligth",
"precio": "10",
"categoriaid": "3",
"url": "false"
}
],
"Whiskey": [
{
"id": "2",
"nombre": "Red label",
"precio": "100",
"categoriaid": "2",
"url": "false"
}
]
}
}
and this is my code but it breaks the app any ideas on how can i make change my code in order to make it fill the tableview with its correspondent section and rows in each sections 这是我的代码,但是它破坏了应用程序有关如何更改我的代码的任何想法,以便使它的对应部分以及每个部分中的行填充到表格视图中
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:self.menuInfo options:NSJSONReadingMutableContainers error:nil];
NSDictionary *cat = [json objectForKey:@"Categories"];
for(NSString *categories in cat){
Categorias *categorias = [[Categorias alloc]initWithNombre:categories];
NSDictionary *listTagDict = [cat objectForKey:categories];
for (NSString *prod in listTagDict) {
NSArray *rows = [listTagDict objectForKey:prod];
for (NSDictionary *rowDict in rows) {
NSString* pID = [rowDict objectForKey:@"id"];
NSString* pNombre = [rowDict objectForKey:@"nombre"];
NSString* pPrecio = [rowDict objectForKey:@"precio"];
NSString* pUrl = [rowDict objectForKey:@"url"];
Productos* productos = [[Productos alloc]initWithNombre:pNombre productoID:pID precio:pPrecio iconUrl:pUrl];
[categorias addRow:productos];
}
}
}
here are my two object clases the .m part 这是我的两个对象的.m部分
@implementation Productos
-(id)initWithNombre:(NSString *)name productoID:(NSString *)pId precio:(NSString*)prec iconUrl:(NSString*)url{
self = [super init];
if (self) {
self.nombre = name;
self.productoID = pId;
self.precio = prec;
self.iconUrl = url;
}
return self;
}
@end
@interface Categorias(){
NSMutableArray *rows;
}
@end
@implementation Categorias
-(id)initWithNombre:(NSString *)name{
self = [super init];
if (self) {
self.nombre = name;
}
return self;
}
-(void)addRow:(Productos *)row {
[rows addObject: row];
}
-(NSArray *)rowData {
return [NSArray arrayWithArray: rows];
}
@end
you are parsing the json response in wrong way, try this, 您以错误的方式解析json响应,请尝试此操作,
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:self.menuInfo options:NSJSONReadingMutableContainers error:nil];
NSDictionary *cat = [json objectForKey:@"Categories"];
NSMutableArray *categoryArray = [NSMutableArray new];
for(NSString *key in [cat allKeys]){
Categorias *category = [[Categorias alloc]initWithNombre:key];
NSArray *listTagDict = [cat objectForKey:key];
for (NSDictionary *prod in listTagDict) {
NSString* pID = [prod objectForKey:@"id"];
NSString* pNombre = [prod objectForKey:@"nombre"];
NSString* pPrecio = [prod objectForKey:@"precio"];
NSString* pUrl = [prod objectForKey:@"url"];
Productos* productos = [[Productos alloc]initWithNombre:pNombre productoID:pID precio:pPrecio iconUrl:pUrl];
[category addRow:productos];
}
[categoryArray addObject:category];
}
use categoryArray
to populate tableview. 使用
categoryArray
填充tableview。 in this, categoryArray
count will be section count, and each section contains rows with rowData
array of each category. 在这种情况下,
categoryArray
计数将是部分计数,并且每个部分都包含具有每个类别的rowData
数组的行。
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return [categoryArray count];
}
-(NSString *) tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
Category *category = [categoryArray objectAtIndex:section];
return category.nombre;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
Category *category = [categoryArray objectAtIndex:section];
NSArray *rows = [category rowData];
return [rows count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath]; return cell;
Category *category = [categoryArray objectAtIndex:indexPath.section];
NSArray *rows = [category rowData];
Product *product = [rows objectAtIndex:indexPath.row];
//populate cell with product
}
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