Question

我正在为EmployeeContactDirectory设计一个简单的基于导航的应用程序。我正在显示员工列表。为了显示员工列表，我正在使用restfull webservice。我正在按照自己的意愿得到适当的回应。我有一个Employee Data的实用程序类，类是EmployeeData.h和Employee.m（包含employeeId，employeeFirstName，employeeLastName）。我的解析代码

// Code for parsing the response and getting desired field into the dictionary object and add the dictionaries into the array.     
    -(void)finishedReceivingData:(NSData *)data {   
        NSData *dataRes = [[restConnection stringData] dataUsingEncoding:NSUTF8StringEncoding];
        ////////////////Parsing with XPathQuery Start//////////////////////
        if (dataRes != NULL) {
        employeeData = [[EmployeeData alloc] init];
        NSString *xPathQuery = [NSString stringWithFormat:@"/*",employeeData.employeeID];
        NSArray *arrayWithObjectList = PerformXMLXPathQuery(dataRes, xPathQuery);
        for(NSDictionary *childOfObjectList in arrayWithObjectList){
        NSArray *arrayOfDataValueObj = (NSArray *)[childOfObjectList objectForKey:@"nodeChildArray"];
       for(NSDictionary *childObjListDict in arrayOfDataValueObj){
       NSArray *childObjListDataValue = (NSArray *)[childObjListDict objectForKey:@"nodeChildArray"];
       for(NSDictionary *childDict in childObjListDataValue){
    if([[childDict objectForKey:@"nodeName"] isEqualToString:@"FName" ])
       {
       employeeData.employeeFirstName = [childDict objectForKey:@"nodeContent"];
       }
       if([[childDict objectForKey:@"nodeName"] isEqualToString:@"EmpID"])
       {
       employeeData.employeeID = [childDict objectForKey:@"nodeContent"];
       }
       }
       //employeeFirstNameArray = [NSArray arrayWithObjects:employeeData, nil];
       employeeIDArray = [NSArray arrayWithObjects:employeeData, nil];
       dictionaryEmployeeFirstName = [NSDictionary dictionaryWithObject:employeeData.employeeFirstName forKey:@"employeeData"];
       dictionaryEmployeeID = [NSDictionary dictionaryWithObject:employeeData.employeeID forKey:@"employeeData"];
       tempArray = [NSArray arrayWithObjects:dictionaryEmployeeFirstName, dictionaryEmployeeID, nil];
       NSLog(@"size of temp %d",[tempArray count]);
       }
       }
      //[employeeData release];
      //employeeData = nil;
      }
      [self.tableviewEmloyeeList reloadData];
    //////////////////////////////Parsing with XPathQuery end//////////
    } 


    -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
        static NSString *CellIdentifier = @"Cell";
        UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
        if (cell == nil) {
            cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
        } 
        // Configure the cell..
       NSDictionary *dictionaryEmployee = [tempArray objectAtIndex:indexPath.row];
       NSArray *firstNameArray = [dictionaryEmployee objectForKey:@"employeeData"];
       NSString *cellValue = [firstNameArray objectAtIndex:indexPath.row];
       NSLog(@"cellValue %@",cellValue);
       cell.textLabel.text = cellValue;

       return cell;
    }

当这行代码进入执行流程时，我收到消息（Exc_bad_Access）：

NSDictionary *dictionaryEmployee = [tempArray objectAtIndex:indexPath.row]

The EXC_Bad_Access is at the mail.m file at line nt retVal = UIApplicationMain(argc, argv, nil, nil);

所以，请告诉我在使用NSDictionary时如何将数据设置到tableview中。当用户点击tableview的行时，它将返回所选员工的ID。

Answer 1

而不是行

tempArray = [NSArray arrayWithObjects:dictionaryEmployeeFirstName, dictionaryEmployeeID, nil];

尝试以下方法，

if( tempArray )
{
   [tempArray release];
   tempArray = nil;
}

tempArray = [[NSArray arrayWithObjects:dictionaryEmployeeFirstName, dictionaryEmployeeID, nil] retain];

由于它是自动释放的，因此可能已经内存不足。

Answer 2

您需要实现一个名为

的tableView委托方法

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

在这里，您将获得该部分＆amp;点击表中的行

为什么我在显示此表视图时看到崩溃？

2 个答案: