在陣列中的.plist

Question

嗨鍵（可可/ iPhone SDK）創建 ，嘗試添加到我的plist編程，繼承人什麼我已經熟了，到目前爲止（對象）：

NSString *documentsDirectory = [[NSString alloc] initWithString:[[[[NSBundle mainBundle] resourcePath] stringByDeletingLastPathComponent] stringByAppendingPathComponent:@"Documents/myfolder"]]; 
     NSString *writablePath = [documentsDirectory stringByAppendingPathComponent:@"Favourites.plist"]; 

     NSMutableDictionary *rootDict = [[NSMutableDictionary alloc] initWithContentsOfFile:writablePath]; 


     [rootDict setValue:@"My Third PDF" forKey:@"Title"]; 
     [rootDict writeToFile:writablePath atomically: YES]; 

和繼承人我的plist：

<plist version="1.0"> 
<dict> 
    <key>Rows</key> 
    <array> 
     <dict> 
      <key>SaveName</key> 
      <string>first.pdf</string> 
      <key>Title</key> 
      <string>My first PDF</string> 
     </dict> 
     <dict> 
      <key>SaveName</key> 
      <string>second.pdf</string> 
      <key>Title</key> 
      <string>My Second PDF</string> 
     </dict> 
    </array> 
</dict> 
</plist> 

如何去增加一個像

<dict> 
      <key>SaveName</key> 
      <string>third.pdf</string> 
      <key>Title</key> 
      <string>My third PDF</string> 
     </dict> 

我的plist（對象？）？謝謝！

Answer 1

你會拳頭必須確保行數組是可變的：

[rootDict setObject:[[rootDict objectForKey:@"Rows"] mutableCopy] forKey:@"Rows"]; 

您將需要創建與結構，例如一個字典

NSDictionary *third = [NDSictionary dictionaryWithObjectsAndKeys: 
         @"third.pdf", @"SaveName", 
         @"My third PDF", @"Title", 
         nil]; 

，並將其添加到陣列：

[[rootDict objectforKey:@"Rows"] addObject:third];