Ios 从JSON输出中提取JSON对象

这是我的JSON输出

{"activitiesList":{"auid":"19UG9IZ","comments":"Please enter Description","createDate":"09/19/2012 07:32:56 AM","id":"19UG9IZ","owner":"04256CRM","response":"Missing Response","status":"Assigned","type":"Request Action"}}

当我有多个activitiesList时，下面的代码可以工作，而不是上面的输出，它只有一个activitiesList

@try {
    NSError* error;
    NSDictionary* json = [NSJSONSerialization JSONObjectWithData:responseData options:kNilOptions error:&error];
    NSArray* activityListFromSiebel = [json objectForKey:@"activitiesList"]; //2
    NSLog(@" Count is %d", [activityListFromSiebel count]);
    for (int i = 0; i < [activityListFromSiebel count]; i++) {
        //if ([activityListFromSiebel count] > 1) {
            NSDictionary* completeActivity = [activityListFromSiebel objectAtIndex:i];

            ObjActivityData *dataActivity = [[ObjActivityData alloc] init];
            dataActivity.activityUID      = [completeActivity objectForKey:@"auid"];
            dataActivity.activitytype     = [completeActivity objectForKey:@"type"];
            dataActivity.activityStatus   = [completeActivity objectForKey:@"status"];
            dataActivity.activityOpenedDt = [completeActivity objectForKey:@"createDate"];
            dataActivity.activityDueDt    = @"";
            dataActivity.activityDesc     = [completeActivity objectForKey:@"comments"];
            dataActivity.activityResponse = [completeActivity objectForKey:@"response"];
            [Activities addObject:dataActivity];
            dataActivity = nil;
        //}
    }
    [self.tableView reloadData];
} @catch (NSException * e) {
    NSLog(@"catching %@ reason %@", [e name], [e reason]);
} @finally {
    NSLog(@"finally");
}

@试试看{
n错误*错误；
NSDictionary*json=[NSJSONSerialization JSONObject WithData:responseData选项：针织错误：&错误]；
NSArray*activityListFromSiebel=[json objectForKey:@“activitiesList”]；//2
NSLog（@“计数为%d，[activityListFromSiebel计数]）；
对于（int i=0；i<[activityListFromSiebel count]；i++）{
//如果（[activityListFromSiebel count]>1）{
NSDictionary*completeActivity=[activityListFromSiebel对象索引：i]；
ObjActivityData*dataActivity=[[ObjActivityData alloc]init]；
dataActivity.activityUID=[completeActivity objectForKey:@“auid”]；
dataActivity.activitytype=[completeActivity objectForKey:@“类型”]；
dataActivity.activityStatus=[completeActivity objectForKey:@“状态”]；
dataActivity.ActivityOpenEdtt=[completeActivity objectForKey:@“createDate”]；
dataActivity.activityDueDt=@”；
dataActivity.activityDesc=[completeActivity objectForKey:@“comments”]；
dataActivity.activityResponse=[completeActivity objectForKey:@“响应”]；
[Activities addObject:dataActivity]；
数据活动=零；
//}
}
[self.tableView重载数据]；
}@catch（n例外*e）{
NSLog（@“捕获%@reason%@，[e name]，[e reason]）；
}@终于{
NSLog（@“最终”）；
}

抛出的try/catch错误是NSInvalidArgumentException原因-[\uu nsFarray length]：发送到实例0x68c8e90的无法识别的选择器。 如果JSON输出仅为1个数组元素，那么我应该以不同的方式解析JSON输出吗。感谢你的帮助

谢谢你这么做

id obj = [json objectForKey:@"activitiesList"];
NSArray* activityListFromSiebel = nil;

if ([obj isKindOfClass:[NSArray class]]) {
    activityListFromSiebel = (NSArray *)obj;
} else {
    activityListFromSiebel = [NSArray arrayWithObject:obj];
}

问题是，当您试图使用代码时，您假设

[json objectForKey:@“activitiesList]”

是一个数组，但实际上它只是一个字典，只有一个条目存在。您可以通过传递for循环并将字典转换为else部分中的

ObjActivityData

对象，也可以将其作为快速修复添加到您现在使用的for循环之前

因此，您的代码将如下所示

NSError* error;
NSDictionary* json = [NSJSONSerialization JSONObjectWithData:responseData options:kNilOptions error:&error];

id obj = [json objectForKey:@"activitiesList"];
NSArray* activityListFromSiebel = nil;

if ([obj isKindOfClass:[NSArray class]]) {
    activityListFromSiebel = (NSArray *)obj;
} else {
    activityListFromSiebel = [NSArray arrayWithObject:obj];
}

NSLog(@" Count is %d", [activityListFromSiebel count]);
for (int i = 0; i < [activityListFromSiebel count]; i++) {
    //if ([activityListFromSiebel count] > 1) {
        NSDictionary* completeActivity = [activityListFromSiebel objectAtIndex:i];

        ObjActivityData *dataActivity = [[ObjActivityData alloc] init];
        dataActivity.activityUID      = [completeActivity objectForKey:@"auid"];
        dataActivity.activitytype     = [completeActivity objectForKey:@"type"];
        dataActivity.activityStatus   = [completeActivity objectForKey:@"status"];
        dataActivity.activityOpenedDt = [completeActivity objectForKey:@"createDate"];
        dataActivity.activityDueDt    = @"";
        dataActivity.activityDesc     = [completeActivity objectForKey:@"comments"];
        dataActivity.activityResponse = [completeActivity objectForKey:@"response"];
        [Activities addObject:dataActivity];
        dataActivity = nil;
    //}
}
[self.tableView reloadData];

NSError*错误；
NSDictionary*json=[NSJSONSerialization JSONObject WithData:responseData选项：针织错误：&错误]；
id obj=[json objectForKey:@“活动列表”]；
NSArray*activityListFromSiebel=nil；
if（[obj是kindof类：[NSArray类]]）{
activityListFromSiebel=（NSArray*）obj；
}否则{
activityListFromSiebel=[NSArray arrayWithObject:obj]；
}
NSLog（@“计数为%d，[activityListFromSiebel计数]）；
对于（int i=0；i<[activityListFromSiebel count]；i++）{
//如果（[activityListFromSiebel count]>1）{
NSDictionary*completeActivity=[activityListFromSiebel对象索引：i]；
ObjActivityData*dataActivity=[[ObjActivityData alloc]init]；
dataActivity.activityUID=[completeActivity objectForKey:@“auid”]；
dataActivity.activitytype=[completeActivity objectForKey:@“类型”]；
dataActivity.activityStatus=[completeActivity objectForKey:@“状态”]；
dataActivity.ActivityOpenEdtt=[completeActivity objectForKey:@“createDate”]；
dataActivity.activityDueDt=@”；
dataActivity.activityDesc=[completeActivity objectForKey:@“comments”]；
dataActivity.activityResponse=[completeActivity objectForKey:@“响应”]；
[Activities addObject:dataActivity]；
数据活动=零；
//}
}
[self.tableView重载数据]；

@user1509593，很乐意帮忙。：）