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我是新手编程。我正在构建一个扫描条形码并将UPC编号放入我的表格视图中的搜索框中的程序。现在我想要做的就是创建一个搜索扫描的UPC。 viewTable显示来自sqlite数据库的清单。 搜索栏是我所需要做的就是编程它搜索，我还没有找到任何关于如何做到这一点的好教程。我怎样才能实现这个？如何在iOS 7 tableView中实现搜索栏？
#import "MasterViewController.h"
#import "DetailViewController.h"
#import "ScanViewController.h"
#import <sqlite3.h>
@interface MasterViewController()
{
NSMutableArray *_objects;
}
@end
@implementation MasterViewController
{
}
- (void)awakeFromNib
{
[super awakeFromNib];
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
// Get the DBAccess object;
DBAccess *dbAccess = [[DBAccess alloc] init];
// Get the products array from the database
self.products = [dbAccess getAllProducts];
// Close the database because we are finished with it
[dbAccess closeDatabase];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)insertNewObject:(id)sender
{
if (!_objects) {
_objects = [[NSMutableArray alloc] init];
}
[_objects insertObject:[NSDate date] atIndex:0];
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
[self.tableView insertRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
}
#pragma mark - Table View
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView
numberOfRowsInSection:(NSInteger)section
{
return [self.products count];
}
// Customize the appearance of table view cells.
- (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];
}
// Configure the cell.
cell.accessoryType = UITableViewCellAccessoryNone;
Product* product = [self.products objectAtIndex:[indexPath row]];
cell.textLabel.text = product.serial;
return cell;
}
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the specified item to be editable.
return NO;
}
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete) {
[_objects removeObjectAtIndex:indexPath.row];
[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.
}
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:@"showDetail"])
{
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
Product *theProduct = _products[indexPath.row];
[[segue destinationViewController] setDetailItem:theProduct];
NSLog(@"this is prepare for segue");
}
}
- (void)scanditSDKOverlayController: (ScanditSDKOverlayController *)scanditSDKOverlayController
didScanBarcode:(NSDictionary *)barcodeResult
{
// add your own code to handle the barcode result e.g.
scanResult = [barcodeResult valueForKey:@"barcode"];
//barcodelabel.text = [NSString stringWithFormat:@"The barcode is: %@", scanResult];
searchLabel.text = [NSString stringWithFormat:@"%@", scanResult];
[self dismissViewControllerAnimated:YES completion:nil];
self.tableView.contentOffset = CGPointMake(0, 0 - self.tableView.contentInset.top);
[searchLabel becomeFirstResponder];
[super viewDidAppear:YES];
}
- (void)scanditSDKOverlayController: (ScanditSDKOverlayController *)scanditSDKOverlayController
didCancelWithStatus:(NSDictionary *)status
{
// add your own code to handle the user canceling the barcode scan process
}
- (void)scanditSDKOverlayController: (ScanditSDKOverlayController *)scanditSDKOverlayController
didManualSearch:(NSString *)input
{
// add your own code to handle user input in the search bar
// (only required if you use the search bar provided by the Scandit SDK
}
-(IBAction)scanClick:(id)sender;
{
ScanditSDKBarcodePicker *picker = [[ScanditSDKBarcodePicker alloc] initWithAppKey:@"oK1ckH/7EeOPhaseNDXmvNVu+pCX2y6UHZWZ/VYw0hE"];
picker.overlayController.delegate = self;
[picker startScanning];
[self presentViewController:picker animated:YES completion:nil];
//[[self navigationController]pushViewController:picker animated:YES];
[searchLabel becomeFirstResponder];
}
-(void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
[searchBar resignFirstResponder];
}
-(void)searchBarCancelButtonClicked:(UISearchBar *)searchBar
{
searchBar.text = nil;
[searchBar resignFirstResponder];
}
@end