将新字典添加到我的 plist 文件中

Question

根 ---- 数组
  项目 0- 字典
    全名 ---- String
    地址 ---- String
  第 1 项 ---- 词典
    全名 ---- String
   地址 ---- 字符串

我有一个看起来像那个的plist。在视图中，我有一个按钮，单击该按钮时我想添加新的“项目 2”或 3、4 或 5 等...我只想添加更多名称和地址。

今晚我花了 3 个小时寻找完美的例子，但没有找到。苹果财产清单样本太深了。我见过可能会接近的代码。

非常感谢

NSMutableDictionary *nameDictionary = [NSMutableDictionary 字典]; [nameDictionary setValue:@"John Doe" forKey:@"fullName"]; [nameDictionary setValue:@"555 W 1st St" forKey:@"address"];

NSMutableArray *plist = [NSMutableArray arrayWithContentsOfFile:[self dataFilePath]];
[plist addObject:nameDictionary];
[plist writeToFile:[self dataFilePath] atomically:YES];

- (NSString *)dataFilePath { NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *path = [documentsDirectory stringByAppendingPathComponent:@"children.plist"]; 返回路径； }

Answer 1

假设 plist 作为文件存储在磁盘上，您可以通过调用 arrayWithContentsOfFile 方法重新打开它并加载新内容。

// Create the new dictionary that will be inserted into the plist.
NSMutableDictionary *nameDictionary = [NSMutableDictionary dictionary];
[nameDictionary setValue:@"John Doe" forKey:@"fullName"];
[nameDictionary setValue:@"555 W 1st St" forKey:@"address"];

// Open the plist from the filesystem.
NSMutableArray *plist = [NSMutableArray arrayWithContentsOfFile:@"/path/to/file.plist"];
if (plist == nil) plist = [NSMutableArray array];
[plist addObject:nameDictionary];
[plist writeToFile:@"/path/to/file.plist" atomically:YES];

-(void)addObject:(id)object 始终插入到数组的末尾。如果需要在特定索引处插入，请使用 -(void)insertObject:(id)object atIndex:(NSUInteger)index 方法。

[plist insertObject:nameDictionary atIndex:2];