我正在从网络服务器接收 json 文件。我正在使用 JSON 文件来解析（到数组和字典中）并使用接收到的信息。但是在某个时间点，我正在尝试保存字典并且无法写入文件。dict 将具有以下格式：
{
author = "<null>";
category = {
"created_at" = "2011-02-06T18:11:39Z";
id = 1;
name = animals;
};
"created_at" = "<null>";
id = 16;
"mobile_user_id" = "<null>";
"rating_count" = "4.33333333333333";
status = 1;
text = "A boy at a cinema notices what looks like a bear sitting next to him \"Are you a bear? \"\"Yes \"\"What are you doing at the movies? \"\"Well, I liked the book! \"";
title = "Various animal jokes";
}
我正在使用以下代码进行保存：
-(BOOL)savePlistFiles:(int)fileNumber
{
BOOL success = NO;
switch (fileNumber) {
case SAVE_FAVORITES_JOKES:
success = [self.favoriteJokes writeToFile:self.favSaveFilePath atomically:YES];
break;
case SAVE_RATED_JOKES:
success = [self.ratedJokes writeToFile:self.ratingSaveFilePath atomically:YES];
break;
default:
NSLog(@"Improper file to save");
success = NO;
break;
}
return success;
}
-(BOOL)addJokeToFavorite:(NSDictionary*)joke
{
NSLog(@"Joke: %@",joke);
BOOL success = NO;
[self.favoriteJokes addObject:joke];
for(NSDictionary* dict in self.favoriteJokes)
NSLog(@"%@", dict);
success = [self savePlistFiles:SAVE_FAVORITES_JOKES];
return success;
}
我用字典调用 addJokeToFavorite 。在 addJokeToFavorite 方法中，self.favoriteJokes 是一个属性，它也被保留。方法 savePlistFiles 总是返回我成功=否。我无法指出它根本不写入文件的原因。我也尝试先创建文件然后再写入。它也没有工作。我还尝试删除值为 的键，但仍然没有输出。
我正在使用以下代码创建 plist 文件：
NSFileManager* fm = [NSFileManager defaultManager];
NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString* documentsDirectory = [paths objectAtIndex:0];
self.favSaveFilePath = [documentsDirectory stringByAppendingPathComponent:@"Favorites.plist"];