iOS écrire à un txt

Question

Je veux écrire dans un txt, mais mon code ne fonctionne pas ...

Ceci est mon code:

-(void)bestScore{ 
    if(cptScore > bestScore){ 
     bestScore = cptScore; 
     highScore.text =[[NSString alloc] initWithFormat: @" %.d", bestScore]; 
     NSString *filePath = [[NSBundle mainBundle] pathForResource:@"bestScore" ofType:@"txt"]; 
     NSString *test = @"test"; 
     [test writeToFile:filePath atomically:YES encoding:NSUTF8StringEncoding error:nil]; 
    } 
} 

J'ai déjà un fichier nommé dans bestScore.txt mon dossier "Supporting Files"

Pouvez-vous m'aider s'il vous plaît?

Merci

EDIT: Je peux lire mon dossier "bestScore.txt" avec ce code:

NSString *filePath = [[NSBundle mainBundle] pathForResource:@"bestScore" ofType:@"txt"]; 
    NSString *textFromFile = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:nil]; 
    highScore.text = textFromFile; 
    bestScore = [textFromFile intValue]; 

Answer 1

Essayez ceci:

-(void)bestScore{ 
    if(cptScore > bestScore){ 
     bestScore = cptScore; 
     highScore.text =[[NSString alloc] initWithFormat: @" %.d", bestScore]; 
     NSString *filePath = [NSHomeDirectory() stringByAppendingPathComponent:@"Library/Preferences/bestScore.txt"]; 
     NSString *test = [NSString stringWithFormat:@"%@",bestStore]; 
     NSError *error; 

     // save a new file with the new best score into ~/Library/Preferences/bestScore.txt 
     if([test writeToFile:filePath atomically:YES encoding:NSUTF8StringEncoding error:&error]) 
     { 
      // wrote to file successfully 
      NSLog(@"succesfully wrote file to %@", filePath); 
     } else { 
      // there was a problem 
      NSLog(@"could not write file to %@ because %@", filePath, [error localizedDescription]); 
     } 
    } 
} 

Et pour relire le score en , vous pouvez faire:

NSString *filePath = [NSHomeDirectory() stringByAppendingPathComponent:@"Library/Preferences/bestScore.txt"]; 
NSString *textFromFile = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:nil]; 
if(textFromFile) 
{ 
    highScore.text = textFromFile; 
    bestScore = [textFromFile intValue]; 
} else { 
    // if the file doesn't exist or if there's an error, initialize bestScore to zero 
    bestScore = 0; 
    highScore.text = @""; 
}