SBJson

          #import “MyDataSource.h”
          #import “JSON.h”
          @implementation MyDataSource
          + (NSDictionary *)fetchLibraryInformation
          {
          NSString *urlString = [NSString stringWithFormat:@"http://wangjun.easymorse.com/wp-content/video/hello.jison"];
          NSURL *url = [NSURL URLWithString:urlString];
          NSLog(@”fetching library data”);
          return [self fetchJSONValueForURL:url];
          }
          + (id)fetchJSONValueForURL:(NSURL *)url
          {
          NSString *jsonString = [[NSString alloc] initWithContentsOfURL:url
          encoding:NSUTF8StringEncoding error:nil];
          id jsonValue = [jsonString JSONValue];
          [jsonString release];
          return jsonValue;
          }
          @end
          table数据展示：
          #import “JSONTableTestViewController.h”
          #import “MyDataSource.h”
          @implementation JSONTableTestViewController
          @synthesize myData;
          - (void)viewDidLoad {
          NSLog(@”加载数据“);
          myData = [[MyDataSource fetchLibraryInformation] retain];
          }
          - (void)didReceiveMemoryWarning {
          // Releases the view if it doesn’t have a superview.
          [super didReceiveMemoryWarning];
          // Release any cached data, images, etc that aren’t in use.
          }
          - (void)viewDidUnload {
          // Release any retained subviews of the main view.
          // e.g. self.myOutlet = nil;
          }
          - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
          return [myData count]; //有多少个section，也就是“几家”
          }
          - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
          return [[myData valueForKey:[[myData allKeys] objectAtIndex:section]] count];
          //这里我们需要告诉UITableViewController每个section里面有几个，也就是“一家里面有几口人”
          }
          - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
          static NSString *CellIdentifier = @”Cell”;
          UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
          if (cell == nil) {
          cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
          reuseIdentifier:CellIdentifier] autorelease];
          }
          //上面的东西都是重复白给的，平时没事不用想为什么，照抄就可以了
          cell.textLabel.text = [[myData valueForKey:[[myData allKeys] objectAtIndex:indexPath.section]] objectAtIndex:indexPath.row];
          //这句看上去复杂，但是其实不过是在特定section里面找到对应的array，
          //然后在array中找到indexPath.row所在的内容
          return cell;
          }
          - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
          {
          return [[myData allKeys] objectAtIndex:section];
          //这里设置对应section的名字，很简单allKey返回所有的键值为一个array，也就是“张家”，“李家”
          //然后用objectAtIndex: 来找出究竟是哪一个就可以了！
          }
          - (void)dealloc {
          [myData release];
          [super dealloc];
          }
          @end