推Uiview並填充數據

Question

我正在創建一個簡單的應用程序，它將數據存儲到sqlite數據庫並從中檢索數據。我能夠存儲數據，並且我還能夠使用所有數據填充UITableView，並在原型單元格中顯示一個字段（名稱）。我現在想要做的是打開一個視圖，以顯示所有的細節。所以我確實設置了一個帶有3個字段的viewController來填充，但我不知道如何在該單元格之間傳輸數據到新視圖。

這裏是我的代碼：

#import "RootViewController.h" 
#import "AppDelegate.h" 
#import "Inserimento_Esame.h" 
#import "Dettagli_Esame.h" 

@interface RootViewController() 

@end 

@implementation RootViewController 

@synthesize nome,crediti,voto; 

- (id)initWithStyle:(UITableViewStyle)style 
{ 
self = [super initWithStyle:style]; 
if (self) { 
    // Custom initialization 
} 
return self; 
} 

- (void)viewDidLoad 
{ 
[super viewDidLoad]; 
NSString *docsDir; 
NSArray *dirPaths; 
dirPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, 
YES); 
docsDir = [dirPaths objectAtIndex:0]; 

databasePath = [[NSString alloc] initWithString: [docsDir stringByAppendingPathComponent: 
@"Esami.sqlite"]]; 
dataList = [[Data alloc] init:databasePath]; 

} 

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

- (BOOL)shouldAutorotateToInterfaceOrientation: 
(UIInterfaceOrientation)interfaceOrientation 
{return YES;} 

#pragma mark - Table view data source 

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView 
{ 
// Return the number of sections. 
return 1; 
} 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
// Return the number of rows in the section. 
return [dataList getSize]; 
} 

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath 
*)indexPath 
{ 
static NSString *CellIdentifier = @"Cell"; 
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
if (cell == nil) { 
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle 
reuseIdentifier:CellIdentifier]; 
} 

NSDictionary *itemAtIndex = (NSDictionary *)[dataList objectAtIndex:indexPath.row]; 
cell.textLabel.textColor = [UIColor whiteColor]; 
cell.textLabel.text = [itemAtIndex objectForKey:@"nome"]; 
cell.detailTextLabel.textColor = [UIColor whiteColor]; 
cell.detailTextLabel.text = [itemAtIndex objectForKey:@"voto"]; 
return cell; 
} 


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

[self performSegueWithIdentifier:@"DETTAGLI" sender:indexPath]; 

} 





- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender 
{ 
if ([[segue identifier] isEqualToString:@"DETTAGLI"]) { 
    NSLog(@"Dettagli"); 
    Dettagli_Esame *destination = [segue destinationViewController]; 
    NSIndexPath * myIndexPath = [self.tableView indexPathForSelectedRow]; 
    NSDictionary *itemAtIndex = (NSDictionary *)[dataList objectAtIndex:myIndexPath.row]; 
    destination.Dett = itemAtIndex; 

// I THINK I MUST PUT HERE MY MISSING CODE 

} 
} 
@end 


EDIT3 

#import "Dettagli_Esame.h" 

@interface Dettagli_Esame() 

@end 

@implementation Dettagli_Esame 
@synthesize nome; 
@synthesize crediti; 
@synthesize voto; 
@synthesize Dett; 

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


- (void)viewDidLoad 
{[super viewDidLoad];} 

EDIT5-6: 

-(void)viewDidAppear:(BOOL)animated{ 
NSString *docsDir; 
NSArray *dirPaths; 
NSLog(@"Dettagli Esame"); 

dirPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, 
YES); 
docsDir = [dirPaths objectAtIndex:0]; 

databasePath = [[NSString alloc] initWithString: [docsDir stringByAppendingPathComponent: 
@"Esami.sqlite"]]; 
dataList = [[Data alloc] init:databasePath]; 
nome.text = [Dett objectForKey:@"nome"]; 
crediti.text = [Dett objectForKey:@"crediti"]; 
voto.text = [Dett objectForKey:@"voto"]; 
NSLog(@"Dettagli Esame: %@", self.Dett); 
} 

Answer 1

你似乎是在正確的軌道上。這destination需要的是你用來填充你的電池相同的信息（實際上，你說3場，但我假設他們都在同一個字典），所以：

NSDictionary *itemAtIndex = (NSDictionary *)[dataList objectAtIndex:myIndexPath.row]; 

然後，你需要創建於Dettagli_Esame類NSDictionary屬性，並指定它，像：

destination.displayDictionary = itemAtIndex; 

這些線路會去你表示「缺碼」。