UITableView - 分組表。 iPhone SDK（Cocoa Touch），Objective C

我找到了一個UITableView的教程 - 向下瀏覽表格視圖，source code，但我想添加一點點升級。我的目標是在級別0（CurrentLevel == 0）中添加2個分區的分組表格視圖。所以我開始：UITableView - 分組表。 iPhone SDK（Cocoa Touch），Objective C

從普通到分組更改表視圖樣式（在RootViewController.xib）。（工作正常）。
變化在RootViewController.m：

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return 1;

到

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { 
if(CurrentLevel == 0)  
    return 2; 
else 
    return 1;

添加新鍵data.plist命名：其他。

之後CurrentLevel 0返回具有相同數據的2個部分objectForKey：@「Rows」。我不知道熱改變

-(void)viewDidLoad, 
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section, 
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

方法從data.plist加載數據爲我的新的關鍵@「其他」，其中key @「其他」是指CurrentLevel 0表視圖表的第二部分。

這是源代碼：

DrillDownAppAppDelegate.h

// 
// DrillDownAppAppDelegate.h 
// DrillDownApp 
// 
// Created by iPhone SDK Articles on 3/8/09. 
// Copyright www.iPhoneSDKArticles.com 2009. 
// 

#import <UIKit/UIKit.h> 

@interface DrillDownAppAppDelegate : NSObject <UIApplicationDelegate> { 

    UIWindow *window; 
    UINavigationController *navigationController; 

    NSDictionary *data; 
} 

@property (nonatomic, retain) IBOutlet UIWindow *window; 
@property (nonatomic, retain) IBOutlet UINavigationController *navigationController; 

@property (nonatomic, retain) NSDictionary *data; 

@end

DrillDownAppAppDelegate.m

// 
// DrillDownAppAppDelegate.m 
// DrillDownApp 
// 
// Created by iPhone SDK Articles on 3/8/09. 
// Copyright www.iPhoneSDKArticles.com 2009. 
// 

#import "DrillDownAppAppDelegate.h" 
#import "RootViewController.h" 


@implementation DrillDownAppAppDelegate 

@synthesize window; 
@synthesize navigationController; 
@synthesize data; 


- (void)applicationDidFinishLaunching:(UIApplication *)application { 

    NSString *Path = [[NSBundle mainBundle] bundlePath]; 
    NSString *DataPath = [Path stringByAppendingPathComponent:@"data.plist"]; 

NSDictionary *tempDict = [[NSDictionary alloc] initWithContentsOfFile:DataPath]; 
self.data = tempDict; 
[tempDict release]; 

// Configure and show the window 
[window addSubview:[navigationController view]]; 
[window makeKeyAndVisible]; 
} 


- (void)applicationWillTerminate:(UIApplication *)application { 
// Save data if appropriate 
} 


- (void)dealloc { 
[data release]; 
[navigationController release]; 
[window release]; 
[super dealloc]; 
} 

@end

RootViewController.h

// 
// RootViewController.h 
// DrillDownApp 
// 
// Created by iPhone SDK Articles on 3/8/09. 
// Copyright www.iPhoneSDKArticles.com 2009. 
// 

#import <UIKit/UIKit.h> 

@interface RootViewController : UITableViewController { 

NSArray *tableDataSource; 
NSString *CurrentTitle; 
NSInteger CurrentLevel; 
} 

@property (nonatomic, retain) NSArray *tableDataSource; 
@property (nonatomic, retain) NSString *CurrentTitle; 
@property (nonatomic, readwrite) NSInteger CurrentLevel; 

@end

RootViewContro ller.m

// 
// RootViewController.m 
// DrillDownApp 
// 
// Created by iPhone SDK Articles on 3/8/09. 
// Copyright www.iPhoneSDKArticles.com 2009. 
// 

#import "RootViewController.h" 
#import "DrillDownAppAppDelegate.h" 
#import "DetailViewController.h" 

@implementation RootViewController 

@synthesize tableDataSource, CurrentTitle, CurrentLevel; 


- (void)viewDidLoad { 
    [super viewDidLoad]; 

if(CurrentLevel == 0) { 

    //Initialize our table data source 
    NSArray *tempArray = [[NSArray alloc] init]; 
    self.tableDataSource = tempArray; 
    [tempArray release]; 

    DrillDownAppAppDelegate *AppDelegate = (DrillDownAppAppDelegate *)[[UIApplication sharedApplication] delegate]; 
    self.tableDataSource = [AppDelegate.data objectForKey:@"Rows"]; 

    self.navigationItem.title = @"Zvolte trasu"; 
} 
else 
    self.navigationItem.title = CurrentTitle; 
} 

- (void)didReceiveMemoryWarning { 
[super didReceiveMemoryWarning]; // Releases the view if it doesn't have a superview 
// Release anything that's not essential, such as cached data 
} 

#pragma mark Table view methods 

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { 
if(CurrentLevel == 0)  
    return 2; 
else 
    return 1; 
} 


// Customize the number of rows in the table view. 
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { 
    return [self.tableDataSource count]; 
} 


// Customize the appearance of table view cells. 
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 

static NSString *CellIdentifier = @"Cell"; 

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
if (cell == nil) { 
    cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease]; 
} 

// Set up the cell... 


NSDictionary *dictionary = [self.tableDataSource objectAtIndex:indexPath.row]; 
cell.textLabel.text = [dictionary objectForKey:@"Title"]; 
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; 
UIImage *rowImage = [UIImage imageNamed:[dictionary objectForKey:@"Image"]]; 
cell.imageView.image = rowImage; 

return cell; 
} 


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

//Get the dictionary of the selected data source. 
NSDictionary *dictionary = [self.tableDataSource objectAtIndex:indexPath.row]; 

//Get the children of the present item. 
NSArray *Children = [dictionary objectForKey:@"Children"]; 

if([Children count] == 0) { 

    DetailViewController *dvController = [[DetailViewController alloc] initWithNibName:@"DetailView" bundle:[NSBundle mainBundle]]; 
    [self.navigationController pushViewController:dvController animated:YES]; 
    [dvController release]; 
} 
else { 

    //Prepare to tableview. 
    RootViewController *rvController = [[RootViewController alloc] initWithNibName:@"RootViewController" bundle:[NSBundle mainBundle]]; 

    //Increment the Current View 
    rvController.CurrentLevel += 1; 

    //Set the title; 
    rvController.CurrentTitle = [dictionary objectForKey:@"Title"]; 

    //Push the new table view on the stack 
    [self.navigationController pushViewController:rvController animated:YES]; 

    rvController.tableDataSource = Children; 

    [rvController release]; 
} 
} 

- (void)dealloc { 
[CurrentTitle release]; 
[tableDataSource release]; 
[super dealloc]; 
} 

@end

謝謝大家誰可以幫助我！

編輯：

我嘗試：

RootViewController.h

// 
// RootViewController.h 
// DrillDownApp 
// 
// Created by iPhone SDK Articles on 3/8/09. 
// Copyright www.iPhoneSDKArticles.com 2009. 
// 

#import <UIKit/UIKit.h> 

@interface RootViewController : UITableViewController { 

NSArray *tableDataSource; 
    NSArray *otherDataSource; 
NSString *CurrentTitle; 
NSInteger CurrentLevel; 
} 

@property (nonatomic, retain) NSArray *tableDataSource; 
@property (nonatomic, retain) NSArray *otherDataSource; 
@property (nonatomic, retain) NSString *CurrentTitle; 
@property (nonatomic, readwrite) NSInteger CurrentLevel; 

@end

RootViewController.m

// 
// RootViewController.m 
// DrillDownApp 
// 
// Created by iPhone SDK Articles on 3/8/09. 
// Copyright www.iPhoneSDKArticles.com 2009. 
// 

#import "RootViewController.h" 
#import "DrillDownAppAppDelegate.h" 
#import "DetailViewController.h" 

@implementation RootViewController 

@synthesize tableDataSource, otherDataSource, CurrentTitle, CurrentLevel; 


- (void)viewDidLoad { 
    [super viewDidLoad]; 

    if(CurrentLevel == 0) { 

     //Initialize our table data source 
    NSArray *tempArray = [[NSArray alloc] init]; 
    self.tableDataSource = tempArray; 
    self.otherDataSource = tempArray; 
      [tempArray release]; 

    DrillDownAppAppDelegate *AppDelegate = (DrillDownAppAppDelegate *)[[UIApplication sharedApplication] delegate]; 
    self.tableDataSource = [AppDelegate.data objectForKey:@"Rows"]; 
    self.otherDataSource = [AppDelegate.data objectForKey:@"Other"]; 

    self.navigationItem.title = @"Root"; 
} 
else 
    self.navigationItem.title = CurrentTitle; 
} 

- (void)didReceiveMemoryWarning { 
[super didReceiveMemoryWarning]; // Releases the view if it doesn't have a superview 
// Release anything that's not essential, such as cached data 
} 

#pragma mark Table view methods 

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { 
if(CurrentLevel == 0) 
    return 2; 
else  
    return 1; 
} 


// Customize the number of rows in the table view. 
//Not sure about this. When I select some cell from section 1, what will appear at didSelectRowAtIndexPath? 
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { 
if(section == 0 && CurrentLevel == 0) 
    return [self.tableDataSource count]; 
if(section == 1 && CurrentLevel == 0) 
    return [self.tableDataSource count]; 
else 
    return [self.tableDataSource count]; 
} 

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

if(section == 0 && CurrentLevel == 0) 
    return nil; 
else 
    return nil; 
} 


// Customize the appearance of table view cells. 
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 

static NSString *CellIdentifier = @"Cell"; 

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
if (cell == nil) { 
    cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease]; 
} 

// Set up the cell... dont know how. 

//here is only tableDataSource 
NSDictionary *dictionary = [self.tableDataSource objectAtIndex:indexPath.section]; 
cell.textLabel.text = [dictionary objectForKey:@"Title"]; 
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; 
UIImage *rowImage = [UIImage imageNamed:[dictionary objectForKey:@"Image"]]; 
cell.imageView.image = rowImage; 

return cell; 
} 

//same problem 
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { 

//only tableDataSource 
NSDictionary *dictionary = [self.tableDataSource objectAtIndex:indexPath.row]; 

//Get the children of the present item. 
NSArray *Children = [dictionary objectForKey:@"Children"]; 

if([Children count] == 0) { 

    DetailViewController *dvController = [[DetailViewController alloc] initWithNibName:@"DetailView" bundle:[NSBundle mainBundle]]; 






    [self.navigationController pushViewController:dvController animated:YES]; 
    [dvController release]; 





} 
else { 

    //Prepare to tableview. 
    RootViewController *rvController = [[RootViewController alloc] initWithNibName:@"RootViewController" bundle:[NSBundle mainBundle]]; 

    //Increment the Current View 
    rvController.CurrentLevel += 1; 

    //Set the title; 
    rvController.CurrentTitle = [dictionary objectForKey:@"Title"]; 

    //Push the new table view on the stack 
    [self.navigationController pushViewController:rvController animated:YES]; 

    rvController.tableDataSource = Children; 

    [rvController release]; 
} 
} 

- (void)dealloc { 
[CurrentTitle release]; 
[tableDataSource release]; 
    [otherDataSource release]; 
[super dealloc]; 
} 

@end

來源

2011-09-29 Tom

創建第二個陣列浩LD使用@「其他」關鍵的第二部分
數據填充這個數組中viewDidLoad
使用indexPath.section在相關數據源的方法，讓你知道你的表視圖問你哪一部分，並返回對象/相關數組的數量。第一部分爲indexPath.section，第二部分爲1。
無論你正在使用tableDataSource，你需要檢查你是哪個部門，這是無論是在傳遞一個整數（部分）或作爲indexpath的一部分（這樣你就可以通過indexPath.section得到它）。如果你在第0節中，使用tableDataSource，否則如果你在第1節中，使用otherDataSource。

來源

2011-09-29 12:20:12 jrturton

感謝您快速的解答。當然，我想是這樣，我知道如何解決這個問題對於普通陣列，但我不知道如何改變通過的.plist文件中提供的數據的方法。再一次：謝謝！ – Tom

我假設你剛剛添加另一個數組到您的.plist文件下一個不同的密鑰，所以appdelegate.data是2列在裏面，一個用鑰匙字典@「行」和一個用鑰匙@」其他」。這不是這種情況嗎？ – jrturton

完全一樣，你說... – Tom

UITableView - 分組表。 iPhone SDK（Cocoa Touch），Objective C

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