紀錄在機器上的讀取與寫入

如果要進行遊戲/程式的存檔的語法：


使用：XCode 4





讀入與把不存在的檔案複製過去：

   NSString *dataname = @"DataName" ;
    NSArray *dirpathary = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    dirpath = [dirpathary objectAtIndex:0] ;


    NSString *path = [dirpath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.plist",dataname] ];
  
    
    NSFileManager *fileManager = [NSFileManager defaultManager];
    
    //假如在document內沒有這個存檔紀錄的話，那就複製一份內定（？）的過去
    if (![fileManager fileExistsAtPath: path]) 
    {
        NSError *error;
        NSString *file = [[NSBundle mainBundle] pathForResource:dataname ofType:@"plist"];
        
        [fileManager copyItemAtPath:file toPath:path error:&error]; 
    }
    
    NSArray *data = [[NSArray arrayWithContentsOfFile:path] retain];

儲存檔案：

   NSArray *data = [NSArray arrayWithObjects:.....,nil];
  NSString *dataname = @"DataName" ;
  NSArray *dirpathary = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
  dirpath = [dirpathary objectAtIndex:0];
  NSString *path = [dirpath stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.plist",dataname] ];
  [data writeToFile:path atomically:NO];