UITableView

Question

'un her bölümüne ayrı bir başlık ekleme iOS'ta tablo görünümleri oluşturmayı öğreniyorum. Bir veya daha fazla bölümden oluşan bir tablo nasıl oluşturulacağını biliyorum, ancak her bölümün önüne bir başlık ekleyeceğimi bilmiyorum.

İşte kodum.

TableViewController.h

#import <UIKit/UIKit.h> 
@interface TableViewController : UIViewController <UITableViewDelegate, UITableViewDataSource>{ 
    NSMutableArray *tableDataSource;  
} 
@end 

TableViewController.m

#import "FourthViewController.h" 
@implementation TableViewController 

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{ 
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; 
    if (self) { 
     // Custom initialization 
    } 
    return self; 
} 

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

- (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. 
} 

#pragma mark - View lifecycle 

- (void)viewDidLoad{ 
    [super viewDidLoad]; 

    UITableView *table = [[UITableView alloc]initWithFrame:CGRectMake(0, 0, 320, 460) style:UITableViewStyleGrouped]; 
    [table setDataSource:self]; 
    [table setDelegate:self]; 
    [table release]; 

    tableDataSource = [[NSMutableArray alloc]init]; 

    NSMutableArray* sec1 = [[NSMutableArray alloc] init]; 
    [sec1 addObject:@"1"]; 
    [sec1 addObject:@"2"]; 
    [sec1 addObject:@"3"]; 

    [tableDataSource addObject:sec1]; 
    [sec1 release]; 

    NSMutableArray* sec2 = [[NSMutableArray alloc] init]; 
    [sec2 addObject:@"One"]; 
    [sec2 addObject:@"Two"]; 
    [sec2 addObject:@"Three"]; 

    [tableDataSource addObject:sec2]; 
    [sec2 release]; 

    [self.view addSubview:table]; 

} 

- (void)viewDidUnload{ 
    [super viewDidUnload]; 
    // Release any retained subviews of the main view. 
    // e.g. self.myOutlet = nil; 
} 

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation{ 
    // Return YES for supported orientations 
    return (interfaceOrientation == UIInterfaceOrientationPortrait); 
} 

#pragma mark - Table 

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { 
    if (tableDataSource == nil) 
     return 1; 
    return [tableDataSource count]; 
} 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {  
    NSInteger bucketCount = -1; 
    NSObject *target_section; 
    if (tableDataSource == nil) 
     return 0; 
    if((bucketCount = [tableDataSource count]) < 1 || bucketCount <= section || (target_section = [tableDataSource objectAtIndex:section ]) == nil) 
     return 0; 
    return [ (NSMutableArray*)target_section count ]; 
} 

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{  
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:[NSString stringWithFormat:@"Cell %i",indexPath.section]]; 
    if (cell == nil) 
     { 
     cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:[NSString stringWithFormat:@"Cell %i",indexPath.section]] autorelease]; 
     } 

cell.textLabel.text = (NSString*)[ (NSMutableArray*)[tableDataSource objectAtIndex:indexPath.section] objectAtIndex:indexPath.row]; 
    return cell; 
} 

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{  
    [tableView deselectRowAtIndexPath:indexPath animated:YES]; 
} 
@end 

Answer 1

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section 
{ 
    if(section == 0) 
    { 
     return @"Title0"; 
    } 
    else if(section == 1) 
    { 
     return @"Title1"; 
    } 
    else 
    { 
     return @"Title2"; 
    } 
} 

Answer 2

bu deneyin:

NSMutableArray *array = [[NSMutableArray alloc] initWithObjects:@"title1", 
                   @"title2", 
                   @"title3", 
                   @"title4", 
                   nil]; 

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{ 
    return [array objectAtIndex:section]; 
} 

Answer 3

Arayabilirsiniz tablo görünümü veri kaynağı yöntemi

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{ 
    return @"title for header"; 
} 

Burada

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{ 
    if(section == 0) 
     { 
     return @"Section 0 title"; 
     } 
    else if (section == 1){ 
     return @"Section 1 title"; 
     } 
    return @"title for header"; 
}