处理不同类型的对象

Question

从我的后端API，我得到一个对象的json，该对象由数组，字典，数字，布尔值，字符串等组成。例如。

{
data:[
{
id : 1,
name : "abcd"
},
{
id : 2,
name : "abcde"
},
{
id : 3,
name : "abcde"
},
]
total_count : 10
}

有时total_count中的值是数字，有时是字符串。 在我的代码中，我已经编码

[lbl setText:[jsonObject valueForKey:@"total_count"]]

由于total_count键值为数字时，这会导致崩溃。 显然我可以做到这一点

[lbl setText:[NSString stringWithFormat:@"%d",[[jsonObject valueForKey:@"total_count"] intValue]]];

但这在API中的很多地方都会发生。 字符串代替了布尔。 data:false而不是data:[]

[编辑]

[[AFHTTPRequestOperationManager manager] GET:[URLString attachToken] parameters:parameters success:^(AFHTTPRequestOperation * _Nonnull operation, id  _Nonnull responseObject) {
        if([[[responseObject valueForKey:@"response"] valueForKey:@"status"] boolValue]) {
NSLog(@"success");
}
                if(success)success(operation, **responseObject**);

            } failure:^(AFHTTPRequestOperation * _Nonnull operation, NSError * _Nonnull error) {
                if(failure)failure(operation, error);
                if(operation.response.statusCode == 0) {
                    ATAFNetworkingRequestObject *obj = [[ATAFNetworkingRequestObject alloc] init];
                    obj.urlString = URLString;
                    obj.paramters = parameters;
                    obj.successBlock = success;
                    obj.failureBlock = failure;
                    obj.type = ATNetworkingRequestGET;
                    if(![self duplicateRequestExists:obj])[pendingAPICalls addObject:obj];
                }

                [self logAPIFailedWithOperation:operation parameters:parameters error:error];
            } autoRetry:5 retryInterval:7];

Answer 1

在根据您A string is coming instead of a bool. data:false instead of data:[]之后，您会喜欢A string is coming instead of a bool. data:false instead of data:[] A string is coming instead of a bool. data:false instead of data:[]

if([datajsonObject isKindOfClass:[NSArray class]]){
    //Is array
}else if([datajsonObject isKindOfClass:[NSDictionary class]]){
    //is dictionary
}else if([datajsonObject isKindOfClass:[NSString class]])
 {
    //is String
 }
else{
    //is something else
}

Answer 2

您可以检查服务器值是数字还是字符串

NSString *newString = [NSString stringWithFormat:@"%@",[[jsonObject valueForKey:@"total_count"]

if ([newString isKindOfClass:[NSNumber class]])
{
    NSLog(@"It is number");
}
if ([newString isKindOfClass:[NSString class]])
{
    NSLog(@"It is string");
}

Answer 3

SWIFT代码 ：

lblCount.text = String(datajsonObject["total_count"] as AnyObject)

目标c：

NSString *strCount = [NSString stringWithFormat:@"%@",[jsonObject valueForKey:@"total_count"]]

if ([strCount isKindOfClass:[NSString class]])
{
    // Write your code to show on label
}