数组存文件

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0];NSString *folderPath = [documentsDirectory stringByAppendingPathComponent:@"UniqueUserAccount"];if (![[NSFileManager defaultManager] fileExistsAtPath:folderPath])   [[NSFileManager defaultManager] createDirectoryAtPath:folderPath withIntermediateDirectories:NO attributes:nil error:&error]; 

保存NSMutableArray，如果不明白可以百度相关说明

folderPath = [folderPath stringByAppendingPathComponent:@"array.out"]; [yourArray writeToFile:folderPath atomically:YES];

读取数组：

NSArray *arrayFromFile = [NSArray arrayWithContentsOfFile:folderPath];NSLog(@"%@",arrayFromFile);

如果要保存图片的话：

for(int i = 0;i < [arrImages count];i++){  folderPath = [folderPath stringByAppendingPathComponent:[NSString stringWithFormat:@"Images%d",i]];  NSMutableString *imgPath;  imgPath=[[NSMutableString  alloc] initWithString: [[NSBundle mainBundle] resourcePath]];  [imgPath stringByAppendingPathComponent:[arrImages objectAtIndex:i]]; NSData *imageData = [NSData dataWithContentsOfFile:imgPath];  NSData *imageData = UIImagePNGRepresentation([arrImages objectAtIndex:i])  [imageData writeToFile:folderPath atomically:YES]; }