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我正在嘗試搜索，但它不能完全爲我工作。當我輸入B時，我需要輸入所有以B開頭的單詞。我仍然想知道我在做錯什麼。我對ios很陌生。搜索不起作用
這裏是我的代碼： - ContactViewController.h
#import <UIKit/UIKit.h>
@interface ContactViewController :
UIViewController<UITableViewDataSource,UITableViewDelegate,UISearchBarDelegate>
{
UISearchBar* searchBar;
IBOutlet UITableView* contactTableView;
NSMutableArray *listOfItems;
NSMutableArray *copyListOfItems;
NSArray *content;
NSArray *indices;
NSArray* contacts;
BOOL searching;
BOOL letUserSelectRow;
}
-(void)btn_AddContact;
@end
ContactViewController.m
#import "ContactViewController.h"
#import "AddContactsViewController.h"
#import "CustomCell.h"
#import "DataGenerator.h"
@interface ContactViewController()
@end
@implementation ContactViewController
- (void)viewDidLoad
{
[super viewDidLoad];
const NSInteger searchBarHeight = 45;
searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, 320,
searchBarHeight)];
[self.view addSubview:searchBar];
searchBar.delegate = self;
[self.view addSubview:searchBar];
UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithTitle:@"Refresh"
style:UIBarButtonItemStyleBordered target:self action:@selector(onAddContact)];
self.navigationItem.rightBarButtonItem = addButton;
UILabel *label = [[UILabel alloc] initWithFrame:CGRectZero];
label.backgroundColor = [UIColor clearColor];
label.font = [UIFont boldSystemFontOfSize:20.0];
label.shadowColor = [UIColor colorWithWhite:0.0 alpha:0.5];
label.textAlignment = UITextAlignmentCenter;
label.textColor = [UIColor whiteColor]; // change this color
self.navigationItem.titleView = label;
label.text = NSLocalizedString(@"All Contacts", @"");
[label sizeToFit];
content = [DataGenerator wordsFromLetters];
indices = [[content valueForKey:@"headerTitle"] retain];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:
(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
#pragma mark -
#pragma mark Table view data source
// Customize the number of sections in the table view.
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return [content count];
}
// Customize the number of rows in the table view.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:
(NSInteger)section {
return [[[content objectAtIndex:section] objectForKey:@"rowValues"] 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:UITableViewCellStyleSubtitle
reuseIdentifier:CellIdentifier];
}
if(searching) {
cell.textLabel.text = [copyListOfItems objectAtIndex:indexPath.row];
cell.detailTextLabel.text=[NSString stringWithFormat:@"%@ %@ %@",
@"[email protected]", @" |",@"123456777"] ;
}else {
cell.textLabel.text = [[[content objectAtIndex:indexPath.section]
objectForKey:@"rowValues"]
objectAtIndex:indexPath.row];
//cell.detailTextLabel.numberOfLines=2;
//cell.detailTextLabel.lineBreakMode=NSLineBreakByWordWrapping;
cell.detailTextLabel.text=[NSString stringWithFormat:@"%@ %@ %@",
@"[email protected]", @" |",@"123456777"] ;
}
return cell;
}
- (NSString *)tableView:(UITableView *)aTableView titleForHeaderInSection:
(NSInteger)section {
return [[content objectAtIndex:section] objectForKey:@"headerTitle"];
}
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
return [content valueForKey:@"headerTitle"];
}
- (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:
(NSString *)title atIndex:(NSInteger)index {
return [indices indexOfObject:title];
}
-(void)onAddContact
{
// AddContactsViewController* add = [[AddContactsViewController alloc]
initWithNibName:@"AddContactsViewController" bundle:nil];
// [self.navigationController pushViewController:add animated:YES];
}
-(void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar
{
if(searching)
return;
searching = YES;
letUserSelectRow = NO;
[contactTableView setScrollEnabled:NO];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]
initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self
action:@selector(btn_DoneSearch)];
}
-(void)btn_DoneSearch
{
searchBar.text = @"";
[searchBar resignFirstResponder];
searching = NO;
letUserSelectRow = YES;
[contactTableView setScrollEnabled:YES];
self.navigationItem.rightBarButtonItem = nil;
[contactTableView reloadData];
}
-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
//Remove all objects first.
[copyListOfItems removeAllObjects];
if([searchText length] > 0){
searching = YES;
letUserSelectRow = YES;
[contactTableView setScrollEnabled:YES];
[self searchTableView];
}else {
searching = NO;
letUserSelectRow = NO;
[contactTableView setScrollEnabled:NO];
}
[contactTableView reloadData];
}
-(void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
[self searchTableView];
}
-(void)searchTableView
{
NSString *searchText = searchBar.text;
NSMutableArray *searchArray = [[NSMutableArray alloc] init];
for (NSDictionary *dictionary in content)
{
NSArray *array = [dictionary objectForKey:@"rowValues"];
[searchArray addObjectsFromArray:array];
}
for (NSString *sTemp in searchArray)
{
NSRange titleResultsRange = [sTemp rangeOfString:searchText
options:NSCaseInsensitiveSearch];
if (titleResultsRange.length>0)
{
[copyListOfItems addObject:sTemp];
NSLog(@"lenght : %d",titleResultsRange.length);
}
}
searchArray = nil;
}
@end
你正在添加searchBar 2次[self.view addSubview：searchBar]; – Rajneesh071