我已经尝试了几个小时但无法解决这个问题。
我正在制作一个保存未完成的国际象棋游戏的应用程序,因此我尝试将数组写入文件。
如果有意义的话,这就是数组:
-NSMutableArray savedGames
--GameSave a
---NSMutableArray board;
----Piece a, b, c, etc.
-----some ints
---NSString whitePlayer, blackPlayer;
---int playerOnTop, turn;
--GameSave b
---NSMutableArray board;
----Piece a, b, c, etc.
-----some ints
---NSString whitePlayer, blackPlayer;
---int playerOnTop, turn;
etc.
这些是我的 NSCoding 方法:
游戏保存.m
- (void)encodeWithCoder:(NSCoder *)coder {
[coder encodeObject:whitePlayer forKey:@"whitePlayer"];
[coder encodeObject:blackPlayer forKey:@"blackPlayer"];
[coder encodeInt:playerOnTop forKey:@"playerOnTop"];
[coder encodeInt:turn forKey:@"turn"];
[coder encodeObject:board forKey:@"board"];
}
- (id)initWithCoder:(NSCoder *)coder {
self = [[GameSave alloc] init];
if (self != nil)
{
board = [coder decodeObjectForKey:@"board"];
whitePlayer = [coder decodeObjectForKey:@"whitePlayer"];
blackPlayer = [coder decodeObjectForKey:@"blackPlayer"];
playerOnTop = [coder decodeIntForKey:@"playerOnTop"];
turn = [coder decodeIntForKey:@"turn"];
}
return self;
}
Piece.m
- (void)encodeWithCoder:(NSCoder *)coder {
[coder encodeInt:color forKey:@"color"];
[coder encodeInt:piece forKey:@"piece"];
[coder encodeInt:row forKey:@"row"];
[coder encodeInt:column forKey:@"column"];
}
- (id)initWithCoder:(NSCoder *)coder {
self = [[Piece alloc] init];
if (self != nil)
{
color = [coder decodeIntForKey:@"color"];
piece = [coder decodeIntForKey:@"piece"];
row = [coder decodeIntForKey:@"row"];
column = [coder decodeIntForKey:@"column"];
}
return self;
}
这是尝试存档并保存到文件的代码:
- (void)saveGame {
ChessSaverAppDelegate *delegate = (ChessSaverAppDelegate *) [[UIApplication sharedApplication] delegate];
[[delegate gameSave] setBoard:board];
NSMutableArray *savedGames = [NSKeyedUnarchiver unarchiveObjectWithFile:[self dataFilePath]];
if (savedGames == nil) {
[NSKeyedArchiver archiveRootObject:[delegate gameSave] toFile:[self dataFilePath]];
} else {
[savedGames addObject:[delegate gameSave]];
[NSKeyedArchiver archiveRootObject:savedGames toFile:[self dataFilePath]];
}
}
- (NSString *)dataFilePath {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
return [documentsDirectory stringByAppendingPathComponent:@"gameSaves.plist"];
}
抱歉,问题是这样的:
设置一些断点后,在 -saveGame 的这一行之后出现错误:
[NSKeyedArchiver archiveRootObject:savedGames toFile:[self dataFilePath]];
这就是控制台中显示的内容:
2010-05-11 17:04:08.852 ChessSaver[62065:207] *** -[NSCFType encodeWithCoder:]: unrecognized selector sent to instance 0x3d3cd30
2010-05-11 17:04:08.891 ChessSaver[62065:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSCFType encodeWithCoder:]: unrecognized selector sent to instance 0x3d3cd30'
2010-05-11 17:04:08.908 ChessSaver[62065:207] Stack: (
32339035,
31077641,
32720955,
32290422,
32143042,
238843,
25827,
238843,
564412,
342037,
238843,
606848,
17686,
2733061,
4646817,
2733061,
3140430,
3149167,
3144379,
2837983,
2746312,
2773089,
41684313,
32123776,
32119880,
41678357,
41678554,
2777007,
9884,
9738
)
如果重要的话,-saveGame 会从导航控制器中的 UIBarButton 调用。
如有任何帮助,我们将不胜感激,谢谢。