在我的应用程序中，我利用 uitable 从我的列表中选择类别。我的任务是，当用户单击或选择一个单元格时，他应该能够在下一个视图（详细视图）中查看所选单元格的详细信息。当他在详细视图中选择项目时，他应该能够在表格视图中返回，并且应该能够在 rootivew 控制器中看到所选项目。
我能够从表格视图正确导航到详细视图，但我无法将详细视图中选择的项目显示给 rootviewcontroller。
请帮我解决这个问题。
图一是我的 rootview 控制器页面。例如：如果用户选择@“make”，他将能够看到@“make”的所有相关类别。在下一页（其中 image2）。
图像是我的详细信息页面。
当用户选择 @"abarth" 时，它应该显示在 rootview 控制器页面（即第一页）中。
以下是我的 rootview 控制器页面代码：
- (void)viewDidLoad
{
self.car = [[NSArray alloc]initWithObjects:@"Make",@"Model",@"Price Min",@"Price Max",@"State",nil];
[super viewDidLoad];
}
-(NSInteger) numberOfSectionInTableView:(UITableView *)tableView
{
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [self.car count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *TextCellIdentifier = @"Cell";
UITableViewCell *cell =[tableView dequeueReusableCellWithIdentifier:TextCellIdentifier];
if (cell==nil)
{
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:TextCellIdentifier];
cell.accessoryType = UITableViewCellAccessoryNone;
cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
cell.textLabel.text = [self.car objectAtIndex:[indexPath row]];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if (0 == indexPath.row)
{
NSLog(@"0");
self.detailcontroller.title = @"Make";
}
else if (1 == indexPath.row)
{
NSLog(@"1");
self.detailcontroller.title = @"Model";
}
else if (2 == indexPath.row)
{
NSLog(@"2");
self.detailcontroller.title = @"Price Min";
}
else if (3 == indexPath.row)
{
self.detailcontroller.title = @"Price Max";
}
else if (4 == indexPath.row)
{
NSLog(@"3");
self.detailcontroller.title = @"State";
}
[self.navigationController
pushViewController:self.detailcontroller
animated:YES];
}
following is my detail view page code:
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
if ([self.title isEqualToString:@"Make"])
{
detail = [[NSArray alloc]initWithObjects:@"Any Make",@"Abarth",@"AC",@"ADAYER",@"Adelaide",@"ALFA ROMEO",@"ALLARD",@"ALPINE-RENAULT",@"ALVIS",@"ARMSTRONG",
@"ASTON MARTIN",@"AUDI",@"AUSTIN",@"AUSTIN HEALEY",@"Barossa",@"BEDFORD",
@"BENTLEY",@"BERTONE",@"BMW",@"BOLWELL",@"BRISTOL",@"BUICK",@"BULLET",
@"CADILLAC",@"CATERHAM",@"CHERY",@"CHEVROLET",@"CHRYSLER",@"CITROEN",
@"Country Central",@"CSV",@"CUSTOM",@"DAEWOO",@"DAIHATSU",@"DAIMLER",
@"DATSUN",@"DE TOMASO",@"DELOREAN",@"DODGE",@"ELFIN",@"ESSEX",
@"EUNOS",@"EXCALIBUR",@"FERRARI",nil];
if ([self.title isEqualToString:@"Abarth"])
{
detail = [[NSArray alloc]initWithObjects:@"HI", nil];
}
}
else if ([self.title isEqualToString:@"Model"])
{
detail = [[NSArray alloc]initWithObjects:@"Any Model", nil];
}
else if ([self.title isEqualToString:@"Price Min"])
{
detail = [[NSArray alloc]initWithObjects:@"Min",@"$2,500",
@"$5,000",
@"$7,500",
@"$10,000",
@"$15,000",
@"$20,000",
@"$25,000",
@"$30,000",
@"$35,000",
@"$40,000",
@"$45,000",
@"$50,000",
@"$60,000",
@"$70,000",
@"$80,000",
@"$90,000",
@"$100,000",
@"$500,000",
@"$1,000,000",nil];
}
else if ([self.title isEqualToString:@"Price Max"])
{
detail = [[NSArray alloc]initWithObjects:@"Max",
@"$2,500",
@"$5,000",
@"$7,500",
@"$10,000",
@"$15,000",
@"$20,000",
@"$25,000",
@"$30,000",
@"$35,000",
@"$40,000",
@"$45,000",
@"$50,000",
@"$60,000",
@"$70,000",
@"$80,000",
@"$90,000",
@"$100,000",
@"$500,000",
@"$1,000,000",nil];
}
else if ([self.title isEqualToString:@"State"])
{
detail = [[NSArray alloc]initWithObjects:@"Any State",
@"Australian Capital Territory",
@"New South Wales",
@"Northern Territory",
@"Queensland",
@"South Australia",
@"Tasmania",
@"Victoria",
@"Western Australia",nil];
}
[self.tableView reloadData];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [detail count];
}
- (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];
}
cell.textLabel.text = [detail objectAtIndex:
[indexPath row]];
cell.font = [UIFont systemFontOfSize:14.0];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[self.navigationController popViewControllerAnimated:YES];
}