ios [__NSCFNumber length]：无法识别的选择器发送到实例 UITableView
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[__NSCFNumber length]: unrecognized selector sent to instance UITableView
提问by lhencq
i'm experiencing an error
我遇到了错误
[__NSCFNumber length]: unrecognized selector sent to instance 0x15580c90 2014-02-18 15:10:49.490 CIB[1706:60b] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFNumber length]: unrecognized selector sent to instance 0x15580c90' *First throw call stack: (0x2da18e83 0x37d756c7 0x2da1c7b7 0x2da1b0af 0x2d969dc8 0x2e33b695 0x2e33b169 0x301ab2fd 0x1603ad 0x302cf315 0x302776cd 0x30276ef1 0x3019d353 0x2fe23943 0x2fe1f167 0x2fe1eff9 0x2fe1ea0d 0x2fe1e81f 0x2fe1854d 0x2d9e3f69 0x2d9e18f7 0x2d9e1c43 0x2d94c471 0x2d94c253 0x326862eb 0x30201845 0x113de1 0x3826eab7) libc++abi.dylib: terminating with uncaught exception of type NSException
[__NSCFNumber 长度]：无法识别的选择器发送到实例 0x15580c90 2014-02-18 15:10:49.490 CIB[1706:60b] * 由于未捕获的异常“NSInvalidArgumentException”而终止应用程序，原因：“-[__NSCFNumber lengthized] 选择器到实例0x15580c90' *第一掷调用堆栈：（0x2da18e83 0x37d756c7 0x2da1c7b7 0x2da1b0af 0x2d969dc8 0x2e33b695 0x2e33b169 0x301ab2fd 0x1603ad 0x302cf315 0x302776cd 0x30276ef1 0x3019d353 0x2fe23943 0x2fe1f167 0x2fe1eff9 0x2fe1ea0d 0x2fe1e81f 0x2fe1854d 0x2d9e3f69 0x2d9e18f7 0x2d9e1c43 0x2d94c471 0x2d94c253 0x326862eb 0x30201845 0x113de1 0x3826eab7）的libc ++ abi.dylib：与未捕获的终止NSException 类型的异常
I have loop here. from array in Json to my model tasklist then stored to NSMutableArray _tasklist
我这里有循环。从 Json 中的数组到我的模型任务列表，然后存储到 NSMutableArray _tasklist
NSArray *taskJson = [json objectForKey:@"fOTaskListModelWss"];
for (NSDictionary *dictCQ in taskJson) {
NSLog(@"TASKLIST: %@", [dictCQ objectForKey:@"foTaskListModelWs"]);
NSDictionary *datadic = [dictCQ objectForKey:@"foTaskListModelWs"];
TaskList *task = [[TaskList alloc]init];
[task setTaskCount:datadic[@"count"]];
[task setFuncCd:datadic[@"funcCd"]];
[task setFuncCdDscp:datadic[@"funcCdDscp"]];
[task setRequestStatus:datadic[@"requestStatus"]];
[task setRole:datadic[@"role"]];
[_taskList addObject:task];
}
then here is my code in cellForRowAtRowPathIndex
那么这是我在 cellForRowAtRowPathIndex 中的代码
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString * simpleTableIdentifier = @"MenuTableViewCell";
MenuTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"MenuTableViewCell" owner:self options:nil];
cell = [nib objectAtIndex:0];
}
TaskList *txn = [_taskList objectAtIndex:indexPath.row];
cell.titleLabel.text = txn.funcCdDscp;
cell.totalCountLabel.text = txn.taskCount;
return cell;}
回答by Steven Fisher
cell.titleLabel.text = txn.funcCdDscp;
cell.totalCountLabel.text = txn.taskCount;
One of these (not sure which, but my guess would be taskCount) is a NSNumber. Text takes an NSString.
其中之一（不确定是哪个，但我的猜测是taskCount）是 NSNumber。文本需要一个 NSString。
回答by codercat
cell.titleLabel.text = txn.funcCdDscp;
cell.totalCountLabel.text = [txn.taskCount stringValue];
OR
或者
Use this as this is best solution
按原样使用它 best solution
cell.totalCountLabel.text = [NSString stringWithFormat:@"%@",txn.taskCount];
回答by muthukumaresh
Hope the following will help you if you are manipulating JSON data from webservice
如果您正在处理来自 webservice 的 JSON 数据，希望以下内容对您有所帮助
cell.textLabel.text=[NSString stringWithFormat:@"%@",[[JsonDictionaryObject objectForKey:@"Respected_Key_Name"]objectAtIndex:indexPath.row]];
回答by Priyanka
Here it is expecting NSStringinstead of NSNumberso that is the reason it crashes.So convert that to NSStringthen it will be resolved.
这里是期待NSString而不是NSNumber所以这就是它崩溃的原因。所以将其转换为NSString然后它将被解决。
