这是如何将文件保存到 iPhone 上的文档以供以后使用的一个示例。这将存储列表中的字典,更改值,然后将更新字典写回指定的文件。让我知道这是否是您想要的。
//user document directory and instantiate dictionary
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectoryPath = [paths objectAtIndex:0];
NSString *plistFilePathInDocumentsDirectory = [documentsDirectoryPath stringByAppendingPathComponent:@"YourFile"];
NSMutableDictionary *yourList= [[NSMutableDictionary alloc] initWithContentsOfFile:plistFilePathInDocumentsDirectory];
//save the new information to the plist in the user documents directory
[yourList setObject:someObject forKey:someKey];
[yourList writeToFile:plistFilePathInDocumentsDirectory atomically:YES];