IOS 对象的归档与解档

1、归档

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documentsDirectory = [paths objectAtIndex:0];

NSString *filePaths = [documentsDirectory stringByAppendingPathComponent:@"cityModel.src"];

NSData*data=[NSKeyedArchiver archivedDataWithRootObject:cityModel];

[data writeToFile:filePaths atomically:NO];

2、解档

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documentsDirectory = [paths objectAtIndex:0];

NSString *filePaths = [documentsDirectory stringByAppendingPathComponent:@"cityModel.src"];

return [NSKeyedUnarchiver unarchiveObjectWithFile:filePaths];