使用iOS在PropertyList中添加其他键和值

Question

我需要将下面提到的keys和values（图像红色标记值）添加到propertylist中。

需要的结构（需要在同一位置添加红色标记的键和值）

现在我的plist：

我的确切方案

1. 我创建了plist，并且我正在获取存储空间 来自JSON解析器的数据。
2. 我有一个基于它的标准中介存储结构 存储（我在上面添加了图像二）
3. 现在我需要添加两个布尔键和值 手动，进入plist。在哪里和哪个位置所有信息 我已经通过上面的图像标记并提到了一个。
4. JSON解析将数据存储到plist中，因为我使用了以下代码

我正在使用的代码：

NSDictionary *JSON = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves | NSJSONReadingMutableContainers error:&error];
 NSDictionary *response = JSON[@"response"];
 NSArray *keys = [response allKeys];

 NSMutableArray *objects = [NSMutableArray new];
 for (NSString *key in keys) {
     NSMutableDictionary *object = response[key];
     NSPredicate *predicate = [NSPredicate predicateWithFormat:@"subject = %@",object[@"subject"]];
     NSArray *objectsWithSameSubject = [objects filteredArrayUsingPredicate:predicate];
     NSInteger subjects = [object[@"subject"] integerValue];
     if (subjects > 0) {

         NSMutableArray *Objects_Subjectcount = [NSMutableArray new];
         [object setObject:Objects_Subjectcount forKey:@"Objects_Subjectcount"];
         for (NSInteger i = 0; i < subjects; i++) {
             [Objects_Subjectcount addObject:object];// object or anything you need

         }
     }
     [objects addObject:object];
 }

 NSArray *paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES);
 NSString *documentsPath = paths.firstObject;
 NSString *plistPath = [documentsPath stringByAppendingPathComponent:@"File.plist"];
 NSError *writeError = nil;
 NSDictionary *finalDict = @{@"Objects": objects};
 NSData *plistData = [NSPropertyListSerialization dataWithPropertyList:finalDict format:NSPropertyListXMLFormat_v1_0 options:NSPropertyListImmutable error:&writeError];
 if(plistData){
     [plistData writeToFile:plistPath atomically:YES];
 }
 else {
     NSLog(@"Error in saveData: %@", error);
 }

Answer 1

假设您的现有plist是由此代码创建的：

NSDictionary *dic = @{@"Planet":@"Earth",
                      @"Earth":@{@"1":@"Asia",
                                 @"2":@"Africa"}
                      };

[dic writeToFile:path atomically:YES];

然后你需要在地球内插入一个新的键值对。

//read
NSDictionary *readDict = [NSDictionary dictionaryWithContentsOfFile:path];
//create a mutable dict to edit it
NSMutableDictionary *mDict = [readDict mutableCopy];
//read the key-value for earth, and we are gonna edit it
NSMutableDictionary *earthDict = mDict[@"Earth"];
//set new object, it can be anything, string, array, dictionary etc
[earthDict setObject:@{@"myName":@"Anoop"}
          forKey:@"new"];
//write it back to same file
[mDict writeToFile:path atomically:YES];

现在plist看起来像这样：