我收到此错误，当用户开始输入查询（XCODE 5.1）时，我的搜索功能不执行任何操作。
我不知道-webView是如何与此错误相关的，因为我没有在这些文件中使用webView。任何意见，将不胜感激。谢谢。
OrdersViewController.h
#import <UIKit/UIKit.h>
@interface OrdersViewController : UITableViewController <UISearchBarDelegate>
//NSmurray is set because we want to edit/move items as well (this will be implemented later)
@property (nonatomic, strong) NSMutableArray *jsonParseArray;
@property (nonatomic, strong) NSMutableArray *ordersArray;
@property (strong, nonatomic) IBOutlet UISearchBar *searchOrders;
@property (nonatomic, strong ) NSMutableArray *orderSearchResults;
#pragma mark -
#pragma mark Class Methods
-(void) retrieveOrderData;
@end
OrdersViewController.m
#import "OrdersViewController.h"
#import "Order.h"
#import "OrderDetailViewController.h"
#define getDataURL @"http://gkhns-macbook-pro.local/gj-3.php"
@interface OrdersViewController ()
@end
@implementation OrdersViewController
@synthesize jsonParseArray, ordersArray;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Uncomment the following line to preserve selection between presentations.
// self.clearsSelectionOnViewWillAppear = NO;
//
// self.navigationItem.rightBarButtonItem = self.editButtonItem;
self.title = @"ORDERS";
[self retrieveOrderData];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void)searchThroughOrders {
self.orderSearchResults = nil;
//gettig the text that is entered in the search bar and it creates nspredicated self containes the search and this text will be replaced by search field
NSPredicate *orderResultsPredicate = [NSPredicate predicateWithFormat:@"SELF contains [search] %@", self.searchOrders.text];
//filtering the predicate that is set before
self.orderSearchResults = [[self.ordersArray filteredArrayUsingPredicate:orderResultsPredicate] mutableCopy];
}
//detect when the user typed in the search
-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
[self searchThroughOrders];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
//are we in regular table view or search display view? Lets check that
if (tableView == self.tableView)
{
return ordersArray.count;
}
else{
[self searchThroughOrders];
// Return the number of rows in the section.
return self.orderSearchResults.count;
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"OrderCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if(cell==nil){
cell=[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
cell.selectionStyle=UITableViewCellStyleDefault;
}
if (tableView== self.tableView)
// Configure the cell...
{Order *orderObject;
orderObject = [ordersArray objectAtIndex:indexPath.row];
cell.textLabel.text=orderObject.order_id;
cell.detailTextLabel.text=orderObject.firstname;
}
else
{
cell.textLabel.text = self.orderSearchResults [indexPath.row];
}
//accessory
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the specified item to be editable.
return YES;
}
*/
/*
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete) {
// Delete the row from the data source
[tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
else if (editingStyle == UITableViewCellEditingStyleInsert) {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
*/
/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath
{
}
*/
/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the item to be re-orderable.
return YES;
}
*/
#pragma mark - Navigation
//In a story board-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
if ([[segue identifier] isEqualToString:@"pushOrderDetailView"]){
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
Order* object = [ordersArray objectAtIndex:indexPath.row];
[[segue destinationViewController] getOrder:object];
}
}
#pragma mark -
#pragma mark Class Methods
-(void) retrieveOrderData{
NSURL * url = [NSURL URLWithString:getDataURL];
NSData * data = [NSData dataWithContentsOfURL:url];
jsonParseArray=[NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
//orders array
ordersArray= [[NSMutableArray alloc]init];
//loop through the jason array
for (int i=0; i<jsonParseArray.count; i++)
{
//create the order object
NSString *oId = [[jsonParseArray objectAtIndex:i] objectForKey:@"order_id"];
NSString *eMail = [[jsonParseArray objectAtIndex:i] objectForKey:@"email"];
NSString *fName = [[jsonParseArray objectAtIndex:i] objectForKey:@"firstname"];
NSString *lName = [[jsonParseArray objectAtIndex:i] objectForKey:@"lastname"];
NSString *sName = [[jsonParseArray objectAtIndex:i] objectForKey:@"store_name"];
NSString *iPrefix = [[jsonParseArray objectAtIndex:i] objectForKey:@"invoice_prefix"];
NSString *pAddress1 = [[jsonParseArray objectAtIndex:i] objectForKey:@"payment_address_1"];
NSString *sPaymentAddress2 = [[jsonParseArray objectAtIndex:i] objectForKey:@"payment_address_2"];
//add order to orders array
[ordersArray addObject:[[Order alloc]initWithOrderId: (NSString *)oId andInvoicePrefix: (NSString*)iPrefix andStoreName:(NSString*)sName andFirstName:(NSString*)fName andLastName:(NSString*)lName andEmail:(NSString*)eMail andPaymentAddress1:(NSString*)pAddress1 andPaymentAddress2:(NSString*)sPaymentAddress2]];
}
//reload the view
[self.tableView reloadData];
}
@end
答案 0 :(得分：0)
我只使用搜索栏而不是搜索栏和可能导致此问题的搜索显示控制器。
还对searchdisplay控制器实现进行了一些更改，修改了问题。
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{
[self searchThroughOrders:searchString
scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
objectAtIndex:[self.searchDisplayController.searchBar
selectedScopeButtonIndex]]];
return YES;
}
-(void)searchDisplayController:(UISearchDisplayController *)controller didLoadSearchResultsTableView:(UITableView *)tableView{
[tableView registerClass:[CustomOrdersCell class] forCellReuseIdentifier:@"OrderCell"];
}
-(void)searchThroughOrders:(NSString *)searchText scope:(NSString*)scope {
//getting the text that is entered in the search bar and it creates nspredicated self containes the search and this text will be replaced by search field
NSPredicate *orderResultsPredicate = [NSPredicate predicateWithFormat:@"order_id contains[c] %@", searchText];
//filtering the predicate that is set before
_orderSearchResults = [ordersArray filteredArrayUsingPredicate:orderResultsPredicate];
}