我有一个与表格视图相关联的搜索显示控制器，因此当用户搜索时，他们可以选择他们想要的选项。在他们选择了他们想要的搜索词之后，表格视图单元格需要将数据解压缩到三个单独的文本字段中，因此我需要知道如何将其嵌入到表格视图单元格中。
以下是搜索显示控制器的代码：
@synthesize candyArray;
@synthesize filteredCandyArray;
@synthesize candySearchBar;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Don't show the scope bar or cancel button until editing begins
[candySearchBar setShowsScopeBar:NO];
[candySearchBar sizeToFit];
// Hide the search bar until user scrolls up
CGRect newBounds = [[self tableView] bounds];
newBounds.origin.y = newBounds.origin.y + candySearchBar.bounds.size.height;
[[self tableView] setBounds:newBounds];
/*** Sample Data for candyArray ***/
candyArray = [NSArray arrayWithObjects:
[Candy candyOfCategory:@"Good" name:@"Bath Towel - Kmart"],
[Candy candyOfCategory:@"Good" name:@"Bath Towel - Wallmart"],
[Candy candyOfCategory:@"Good" name:@"Bath Towel - Target"],
[Candy candyOfCategory:@"Better" name:@"Bath Towel - Khols"],
[Candy candyOfCategory:@"Better" name:@"Bath Towel - JCpenny"],
[Candy candyOfCategory:@"Best" name:@"Bath Towel - Dillards"],
[Candy candyOfCategory:@"Best" name:@"Bath Towel - Macy's"],
[Candy candyOfCategory:@"Good" name:@"Hand Towel - Kmart"],
[Candy candyOfCategory:@"Good" name:@"Hand Towel - Wallmart"],
[Candy candyOfCategory:@"Good" name:@"Hand Towel - Target"][Candy candyOfCategory:@"Best" name:@"Bath Canister - Macy's"], nil];
// Initialize the filteredCandyArray with a capacity equal to the candyArray's capacity
filteredCandyArray = [NSMutableArray arrayWithCapacity:[candyArray count]];
// Reload the table
[[self tableView] reloadData];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#pragma mark - Table view data source
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Check to see whether the normal table or search results table is being displayed and return the count from the appropriate array
if (tableView == self.searchDisplayController.searchResultsTableView)
{
return [filteredCandyArray count];
}
else
{
return [candyArray 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];
}
// Create a new Candy Object
Candy *candy = nil;
// Check to see whether the normal table or search results table is being displayed and set the Candy object from the appropriate array
if (tableView == self.searchDisplayController.searchResultsTableView)
{
candy = [filteredCandyArray objectAtIndex:[indexPath row]];
}
else
{
candy = [candyArray objectAtIndex:[indexPath row]];
}
// Configure the cell
[[cell textLabel] setText:[candy name]];
[cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator];
return cell;
}
#pragma mark - TableView Delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
// Perform segue to candy detail
[self performSegueWithIdentifier:@"candyDetail" sender:tableView];
}
#pragma mark - Segue
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ( [[segue identifier] isEqualToString:@"candyDetail"] ) {
UIViewController *candyDetailViewController = [segue destinationViewController];
// In order to manipulate the destination view controller, another check on which table (search or normal) is displayed is needed
if(sender == self.searchDisplayController.searchResultsTableView) {
NSIndexPath *indexPath = [self.searchDisplayController.searchResultsTableView indexPathForSelectedRow];
NSString *destinationTitle = [[filteredCandyArray objectAtIndex:[indexPath row]] name];
[candyDetailViewController setTitle:destinationTitle];
}
else {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
NSString *destinationTitle = [[candyArray objectAtIndex:[indexPath row]] name];
[candyDetailViewController setTitle:destinationTitle];
}
}
}
- (IBAction)cancel:(id)sender {
[self dismissViewControllerAnimated:YES completion:nil];
}
#pragma mark Content Filtering
- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
// Update the filtered array based on the search text and scope.
// Remove all objects from the filtered search array
[self.filteredCandyArray removeAllObjects];
// Filter the array using NSPredicate
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF.name contains[c] %@",searchText];
NSArray *tempArray = [candyArray filteredArrayUsingPredicate:predicate];
if(![scope isEqualToString:@"All"]) {
// Further filter the array with the scope
NSPredicate *scopePredicate = [NSPredicate predicateWithFormat:@"SELF.category contains[c] %@",scope];
tempArray = [tempArray filteredArrayUsingPredicate:scopePredicate];
}
filteredCandyArray = [NSMutableArray arrayWithArray:tempArray];
}
#pragma mark - UISearchDisplayController Delegate Methods
- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{
// Tells the table data source to reload when text changes
[self filterContentForSearchText:searchString scope:
[[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:[self.searchDisplayController.searchBar selectedScopeButtonIndex]]];
// Return YES to cause the search result table view to be reloaded.
return YES;
}
- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchScope:(NSInteger)searchOption
{
// Tells the table data source to reload when scope bar selection changes
[self filterContentForSearchText:[self.searchDisplayController.searchBar text] scope:
[[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:searchOption]];
// Return YES to cause the search result table view to be reloaded.
return YES;
}
#pragma mark - Search Button
@end
答案 0 :(得分：0)
“[Candy candyOfCategory：@”Good“名称：@”Bath Towel - Kmart“]，”将作为数据，我需要一个nsstring链接到文本字段。
我将假设您在目的地（明细）视图控制器中需要这个？
步骤1：创建一个可用作自定义视图控制器的UIViewController子类
第2步：在自定义VC标头中声明@property个对象，例如：
@property (strong, nonatomic) NSString* category;
@property (strong, nonatomic) NSString* name;
（或者您甚至可以使用自定义的Candy类！）
第3步：而不是将新目标视图控制器声明为UIViewController，而不是将其声明为CandyDetailViewController（或您喜欢的任何名称）：
CandyDetailViewController *candyDetailViewController = [segue destinationViewController];
第4步：在您设置目标标题的位置下方，您现在可以设置属性。
您的prepareForSegue方法现在应该类似于：
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ( [[segue identifier] isEqualToString:@"candyDetail"] ) {
CandyDetailViewController *candyDetailViewController = [segue destinationViewController];
Candy *candy;
if(sender == self.searchDisplayController.searchResultsTableView) {
NSIndexPath *indexPath = [self.searchDisplayController.searchResultsTableView indexPathForSelectedRow];
candy = [filteredCandyArray objectAtIndex:[indexPath row]];
NSString *destinationTitle = [[filteredCandyArray objectAtIndex:[indexPath row]] name];
}
else {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
candy = [filteredCandyArray objectAtIndex:[indexPath row]];
NSString *destinationTitle = [[candyArray objectAtIndex:[indexPath row]] name];
}
candyDetailViewController.name = candy.name;
candyDetailViewController.category = candy.category;
[candyDetailViewController setTitle:destinationTitle];
}
}