Question

从我的后端API，我得到一个由数组，字典，数字，bool，字符串等组成的json对象。例如。

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

有时，total_count中的值是一个数字，有时它是一个字符串。在我的代码中，我编码了

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

这会崩溃，因为total_count键值是一个数字。显然我可以做到这一点

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

但这种情况发生在API的很多地方。字符串来了而不是bool。 data:false代替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

根据您的A string is coming instead of a bool. data:false instead of data:[]

确认后

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否为数字或字符串

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
}

处理不同类型的对象

3 个答案: