UITableView - Grouped Table. iOS (Cocoa Touch), Objective-C - UITableView - Grouped Table. iOS (Cocoa Touch), Objective-C 小贝子编程网

我找到了一个UITableView教程-下钻表视图，源代码，但我想添加一点升级。我的目标是在level 0 (CurrentLevel == 0)中添加2个section的分组表视图。

将表视图样式(在RootViewController.xib)从Plain更改为Grouped。(没问题)。
RootViewController.m:

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

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

为数据添加新键。列表名称:Other.

之后CurrentLevel 0为objectForKey:@"行"返回具有相同数据的2节。我不知道该怎么改

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

方法从data中加载数据。

为我的新键@"Other"，其中键@"Other"表示在CurrentLevel 0表视图中表的第二部分。

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

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, 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;   
}
#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

编辑:

我的尝试:

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;   
}
#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... don't 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

创建第二个数组来保存第二个部分的数据
在viewDidLoad中使用@"Other"键填充此数组
在相关的数据源方法中使用indexPath.section，这样你就知道你的表视图询问你关于哪个部分，并返回相关数组的对象/计数。indexPath.section在第一部分为0，在第二部分为1。
无论你在哪里使用tableDataSource，你需要检查你在哪个部分。它要么作为整数(section)传入，要么作为indexpath的一部分传入(因此您可以通过indexpath .section获得它)。如果你在section 0，使用tableDataSource，如果你在section 1，使用otherDataSource。

UITableView - Grouped Table. iOS (Cocoa Touch), Objective-C

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