运行效果如下，分别是折叠状态的tabview和展开状态的tabview：
一、新建UITableViewController
.h文件如下，包含了一个用于显示的视图tableview和用于表示模型数据的MutableArray. @interface GDXXDetailVC :UITableViewController <UITableViewDelegate,UITableViewDataSource,UIActionSheetDelegate> { UITableView* tableView; NSMutableArray* model; UIBarButtonItem *btnSave; NSString *account,*pass; NSArray* keys; } -(void)setModel:(NSString*)_account pass:(NSString*)_pass data:(NSArray*)_data; -(void)save; -(void)collapseOrExpand:(int)section; -(Boolean)isExpanded:(int)section; @end.m文件如下，包含了tableview的datasource方法，和模型的处理逻辑。#import "GDXXDetailVC.h"@implementation GDXXDetailVC -(id)init{ if(self=[super init]){ self.title=@"工单处理"; } return self; } -(void)setModel:(NSString*)_account pass:(NSString*)_pass data:(NSArray*)_data { account=_account; pass=_pass; model=[[NSMutableArray alloc]init]; [model setArray:_data]; [_data release]; } -(void)loadView{ self.view=[[UIView alloc]initWithFrame:CGRectMake(0, 0, 320, 480)]; tableView=[[UITableView alloc]initWithFrame:CGRectMake(0, 20, 320, 480) style:UITableViewStyleGrouped]; [self.view addSubview:tableView]; tableView.delegate=self; tableView.dataSource=self; //这个图片中工具栏中显示一个保存按钮 btnSave= [[UIBarButtonItem alloc]initWithTitle:@"处理"style:UIBarButtonItemStyleBorderedtarget:selfaction:@selector(save)]; self.navigationItem.rightBarButtonItem = btnSave; [btnSave release]; } -(void)saveData{ } #pragma mark Actionsheet 委托方法 - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {//当ActionSheet的某个按钮被按下时触发 if(buttonIndex == 0)//第一个按钮表示保存按钮 { [self performSelector:@selector(saveData)]; } //解散actionSheet [actionSheet dismissWithClickedButtonIndex: buttonIndex animated:YES];} #pragma mark ===table view dataSource method and delegate method=== //返回分组数 -(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{ return [model count]; } //返回组标题 //-(NSString*)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section //{ // NSDictionary* d=[model objectAtIndex:section]; // if(d!=nil) //title=[d objectForKey:@"title"]; // else return nil; //} //自定义section header - (UIView *) tableView: (UITableView *) tableView viewForHeaderInSection: (NSInteger) section { NSString*title=@"notitle"; NSDictionary* d=[model objectAtIndex:section]; if(d!=nil) title=[d objectForKey:@"title"]; CGRect screenRect = [[UIScreen mainScreen] applicationFrame]; UIView* footerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, screenRect.size.width, 44.0)]; footerView.autoresizesSubviews = YES; footerView.autoresizingMask = UIViewAutoresizingFlexibleWidth; footerView.userInteractionEnabled = YES; footerView.hidden = NO; footerView.multipleTouchEnabled = NO; footerView.opaque = NO; footerView.contentMode = UIViewContentModeScaleToFill; // Add the label UILabel* footerLabel = [[UILabel alloc] initWithFrame:CGRectMake(64, 5, 120.0, 45.0)]; footerLabel.backgroundColor = [UIColor clearColor]; footerLabel.opaque = NO; footerLabel.text = title; footerLabel.textColor = [UIColor blackColor]; footerLabel.highlightedTextColor = [UIColor blueColor]; footerLabel.font = [UIFont boldSystemFontOfSize:17]; footerLabel.shadowColor = [UIColor whiteColor]; footerLabel.shadowOffset = CGSizeMake(0.0, 1.0); [footerView addSubview: footerLabel]; [footerLabel release];// Add the button
UIButton* footerButton = [[UIButton alloc] initWithFrame:CGRectMake(12, 5, 48.0, 48.0)]; //一开始小节是处于“折叠状态”，“＋/-”按钮显示“＋号”图标 if ([self isExpanded:section]) {//若本节转换到“展开”状态，需要把图标显示成“-”号 [footerButton setBackgroundImage:[UIImage imageNamed:@"minus.png"] forState:UIControlStateNormal]; }else [footerButton setBackgroundImage:[UIImage imageNamed:@"plus.png"] forState:UIControlStateNormal]; [footerButton addTarget:self action:@selector(expandButtonClicked:) forControlEvents:UIControlEventTouchUpInside]; footerButton.tag=section;//把节号保存到按钮tag，以便传递到expandButtonClicked方法 [footerView addSubview: footerButton]; [footerButton release]; // Return the footerView return footerView; } //当“＋/-”按钮被点击时触发 -(void)expandButtonClicked:(id)sender{ UIButton* btn=(UIButton*)sender; int section=btn.tag; //取得节号 [self collapseOrExpand:section]; //刷新tableview [tableView reloadData]; } //对指定的节进行“展开/折叠”操作 -(void)collapseOrExpand:(int)section{ Boolean expanded=NO; NSMutableDictionary* d=[model objectAtIndex:section]; //若本节model中的“expanded”属性不为空，则取出来 if([d objectForKey:@"expanded"]!=nil) expanded=[[d objectForKey:@"expanded"]intValue]; //若原来是折叠的则展开，若原来是展开的则折叠 [d setObject:[NSNumber numberWithBool:!expanded] forKey:@"expanded"]; } //返回指定节的“expanded”值 -(Boolean)isExpanded:(int)section{ Boolean expanded=NO; NSMutableDictionary* d=[model objectAtIndex:section]; //若本节model中的“expanded”属性不为空，则取出来 if([d objectForKey:@"expanded"]!=nil) expanded=[[d objectForKey:@"expanded"]intValue]; return expanded; } // 设置header的高度 - (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section { return 60; } //返回分组的行数 -(NSInteger)tableView:(UITableView *)table numberOfRowsInSection:(NSInteger)section{ //对指定节进行“展开”判断 if (![self isExpanded:section]) {//若本节是“折叠”的，其行数返回为0 return 0; } NSDictionary* d=[model objectAtIndex:section]; return [[d objectForKey:@"items"] count]; } //设置行高 -(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{ return 50; } //设置每一单元格的内容 -(UITableViewCell*)tableView:(UITableView *)table cellForRowAtIndexPath:(NSIndexPath *)indexPath{ static NSString*cellId=@"setcell"; UITableViewCell* cell=(UITableViewCell*)[table dequeueReusableCellWithIdentifier:cellId]; if(cell==nil){ cell=[[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellId]autorelease]; cell.selectionStyle=UITableViewCellSelectionStyleNone; } NSDictionary* items=[[model objectAtIndex:indexPath.section] objectForKey:@"items"]; keys=[items allKeys]; cell.textLabel.text=[items objectForKey:[keys objectAtIndex:indexPath.row]]; cell.textLabel.font=[UIFont fontWithName:@"Arial" size:18.0]; return cell; } //单元格选中时触发 -(void)tableView:(UITableView *)table didSelectRowAtIndexPath:(NSIndexPath *)indexPath{ } -(void)save{ } -(void)dealloc{ [model release]; [tableView release]; [super dealloc]; }@end二、在application的AppDelegate中实例化TableViewController 在application方法中，构造好一个Array，把要展示的数据放到其中，然后调用TableViewController的setModel方法设置tableview的model。这个Array的结构应该是这样的： NSArray 中的元素为NSMutableDictionary(必须是Mutable，不能是NSDictionary)。每一个 NSMutableDictionary代表了一个小节的数据，包含若干key-value，其中Title为小节名称，expanded为小节的展开/ 折叠状态，items为小节中每一行的数据。 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { window=[[UIWindow alloc]initWithFrame:[[UIScreen mainScreen]bounds]]; GDXXDetailVC* rootController=[[GDXXDetailVC alloc]init]; NSMutableArray* items=[[NSMutableArray alloc]init]; for (int i=1; i<10; i++) { NSDictionary *d=[NSDictionary dictionaryWithObjectsAndKeys: [NSString stringWithFormat:@"section %d item1",i],@"1", [NSString stringWithFormat:@"section %d item2",i],@"2", [NSString stringWithFormat:@"section %d item3",i],@"3", nil]; NSMutableDictionary* dic=[NSMutableDictionary dictionaryWithObjectsAndKeys: [NSString stringWithFormat:@"title %d",i],@"title", d,@"items",[NSNumber numberWithBool:NO],@"expanded", nil]; //[d release]; [items addObject:dic]; //[dic release];} [rootController setModel:nil pass:nil data:items]; //[items release]; [rootController setTitle:@"无线应用"]; [window addSubview:rootController.view]; //[rootController release]; [window makeKeyAndVisible]; return YES; }