運行效果如下，分別是折疊狀態(tài)的tabview和展開狀態(tài)的tabview：

一、新建UITableViewController

.h文件如下，包含了一個用于顯示的視圖tableview和用于表示模型數(shù)據(jù)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，和模型的處理邏輯。

#import "GDXXDetailVC.h"

@implementation GDXXDetailVC

-(id)init{

if(self=[super init]){

self.title=@"工單處理";

}

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;

//這個圖片中工具欄中顯示一個保存按鈕

btnSave= [[UIBarButtonItem alloc]

initWithTitle:@"處理"

style:UIBarButtonItemStyleBordered

target:self

action:@selector(save)];

self.navigationItem.rightBarButtonItem = btnSave;

[btnSave release];

}

-(void)saveData{

}

#pragma mark Actionsheet 委托方法

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex

{//當ActionSheet的某個按鈕被按下時觸發(fā)

if(buttonIndex == 0)//第一個按鈕表示保存按鈕

{

[self performSelector:@selector(saveData)];

}

//解散actionSheet

[actionSheet dismissWithClickedButtonIndex: buttonIndex animated:YES];

}

#pragma mark ===table view dataSource method and delegate method===

//返回分組數(shù)

-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{

return [model count];

}

//返回組標題

//-(NSString*)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section

//{

// NSDictionary* d=[model objectAtIndex:section];

// if(d!=nil)

// title=[d objectForKey:@"title"];

// else return nil;

//}

//自定義section header

- (UIView *) tableView: (UITableView *) tableView

viewForHeaderInSection: (NSInteger) section

{

NSString* title=@"no title";

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)];

//一開始小節(jié)是處于“折疊狀態(tài)”，“＋/-”按鈕顯示“＋號”圖標

if ([self isExpanded:section]) {//若本節(jié)轉(zhuǎn)換到“展開”狀態(tài)，需要把圖標顯示成“-”號

[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;//把節(jié)號保存到按鈕tag，以便傳遞到expandButtonClicked方法

[footerView addSubview: footerButton];

[footerButton release];

// Return the footerView

return footerView;

}

//當“＋/-”按鈕被點擊時觸發(fā)

-(void)expandButtonClicked:(id)sender{

UIButton* btn=(UIButton*)sender;

int section=btn.tag; //取得節(jié)號

[self collapseOrExpand:section];

//刷新tableview

[tableView reloadData];

}

//對指定的節(jié)進行“展開/折疊”操作

-(void)collapseOrExpand:(int)section{

Boolean expanded=NO;

NSMutableDictionary* d=[model objectAtIndex:section];

//若本節(jié)model中的“expanded”屬性不為空，則取出來

if([d objectForKey:@"expanded"]!=nil)

expanded=[[d objectForKey:@"expanded"]intValue];

//若原來是折疊的則展開，若原來是展開的則折疊

[d setObject:[NSNumber numberWithBool:!expanded] forKey:@"expanded"];

}

//返回指定節(jié)的“expanded”值

-(Boolean)isExpanded:(int)section{

Boolean expanded=NO;

NSMutableDictionary* d=[model objectAtIndex:section];

//若本節(jié)model中的“expanded”屬性不為空，則取出來

if([d objectForKey:@"expanded"]!=nil)

expanded=[[d objectForKey:@"expanded"]intValue];

return expanded;

}

// 設(shè)置header的高度

- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {

return 60;

}

//返回分組的行數(shù)

-(NSInteger)tableView:(UITableView *)table numberOfRowsInSection:(NSInteger)section{

//對指定節(jié)進行“展開”判斷

if (![self isExpanded:section]) {//若本節(jié)是“折疊”的，其行數(shù)返回為0

return 0;

}

NSDictionary* d=[model objectAtIndex:section];

return [[d objectForKey:@"items"] count];

}

//設(shè)置行高

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{

return 50;

}

//設(shè)置每一單元格的內(nèi)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;

}

//單元格選中時觸發(fā)

-(void)tableView:(UITableView *)table didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

}

-(void)save{

}

-(void)dealloc{

[model release];

[tableView release];

[super dealloc];

}

@end

二、在application的AppDelegate中實例化TableViewController

在application方法中，構(gòu)造好一個Array，把要展示的數(shù)據(jù)放到其中，然后調(diào)用TableViewController的setModel方法設(shè)置tableview的model。這個Array的結(jié)構(gòu)應(yīng)該是這樣的：

實現(xiàn)可折疊的分組tableview