ios - NSDictionary 键比较失败

Question

我正在处理一个非常基本的问题，我有两个字典键需要比较，但是当我这样做时它没有给我正确的答案，不知何故我无法创建逻辑。

所以我在字典的 plist 数组和来自服务器的 json 数组中有这个如果 plist 中存在事件，我想比较它们是否做某事，如果不做另一件事；

问题:
根据我的逻辑，如果 plist 中的两个事件等于来自服务器的其他两个事件，如果逻辑应该为每个来自服务器的字典打印，那么在这种情况下总共打印 2 次，但在我的代码中打印 4 次。基本上每次都是满足条件。

NS日志:

evreka find the id
evreka find the id
evreka find the id
evreka find the id

来源:在 plist 中；

createList (
        {
        "end_date" = "2013-07-24";
        ends = "13:07:00";
        "event_id" = 173;
        "event_name" = Static;
        location = Asdad;
        "root_folder" = "dadapof@gmail.com";
        "start_date" = "2013-07-24";
        starts = "13:07:00";
        "user_id" = 13;
    },
        {
        "end_date" = "2013-07-25";
        ends = "13:08:00";
        "event_id" = 174;
        "event_name" = "Event Delete";
        location = Asdsad;
        "root_folder" = "dadapof@gmail.com";
        "start_date" = "2013-07-25";
        starts = "13:08:00";
        "user_id" = 13;
    }
)

这来自服务器

responseobj (
        {
        "end_date" = "2013-07-24";
        ends = "13:07:00";
        "event_id" = 173;
        "event_name" = Static;
        location = Asdad;
        "root_folder" = "dadapof@gmail.com";
        "start_date" = "2013-07-24";
        starts = "13:07:00";
        "user_id" = 13;
    },
        {
        "end_date" = "2013-07-25";
        ends = "13:08:00";
        "event_id" = 174;
        "event_name" = "Event Delete";
        location = Asdsad;
        "root_folder" = "dadapof@gmail.com";
        "start_date" = "2013-07-25";
        starts = "13:08:00";
        "user_id" = 13;
    }
)

代码:

比较代码；

if ([[NSFileManager defaultManager] fileExistsAtPath:dataPath]){
        createList= [NSMutableArray arrayWithContentsOfFile:dataPath];
        NSLog(@"createList %@",createList);
        NSLog(@"responseobj %@",responseObj);


        //compare plist and response object
        for (int i=0; i<[responseObj count]; i++) {
            NSDictionary *dataDict = [responseObj objectAtIndex:i];

            NSString *event_name =[dataDict objectForKey:@"event_name"];
            //NSString *event_id =[dataDict objectForKey:@"event_id"];

            BOOL eventExistInPlist=NO;


            for (int j=0; j<[createList count]; j++) {
                NSDictionary *createDict = [createList objectAtIndex:i];

                //NSString *create_id =[createDict objectForKey:@"event_id"];
                NSNumber *create_id =[createDict objectForKey:@"event_id"];

                if ([[dataDict objectForKey:@"event_id"] isEqual:[createDict objectForKey:@"event_id"]]) {
               // if (create_id==event_id) {
                    NSLog(@"evreka find the id"); 

我尝试过的:我尝试将它们作为字符串(isEqualtoString)、数字(==)和 isEqual: 方法进行比较，它们都失败了。

我做错了什么？

Answer 1

在

 NSDictionary *createDict = [createList objectAtIndex:i];
                                                      ^----- HERE

您使用了错误的索引，对于内部循环，它应该是 j 而不是 i。