IOS開發----UISearchBar，搜索框的使用

demo下載：http://www.oschina.net/code/snippet_661032_15006

- (void)viewDidLoad { //去除SearchBar的背景 [[_searchBarOf_Ready.subviews objectAtIndex:0] setHidden:YES]; [[_searchBarOf_Ready.subviews objectAtIndex:0] removeFromSuperview]; for (UIView *subview in _searchBarOf_Ready.subviews) { if ([subview isKindOfClass:NSClassFromString(@"UISearchBarBackground")]) { [subview removeFromSuperview]; break; } } [super viewDidLoad]; //Do any additional setup after loading the view from its nib. }

1.

NSArray *dataList;
    NSMutableArray *showData;

定義2個數組，showData用來搜索存放顯示的數據，dataList用來存放原始數據.

2.實現如下幾個代理方法

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return [_showData count]>0?[_showData count]:0;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *TableSampleIdentifier = @"TableSampleIdentifier";
    
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:
                             TableSampleIdentifier];
    if (cell == nil) {
        cell = [[UITableViewCell alloc]
                initWithStyle:UITableViewCellStyleDefault
                reuseIdentifier:TableSampleIdentifier];
    }
    if (_showData != nil && _showData.count >0) {
        NSUInteger row = [indexPath row];
        cell.textLabel.text = [_showData objectAtIndex:row];
    }
    return cell;
}

- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText;
{
    NSLog(@"%i",[_dataList count]);
    if (searchText!=nil && searchText.length>0) {
        self.showData= [NSMutableArray array];
        for (NSString *tempStr in _dataList) {
            if ([tempStr rangeOfString:searchText options:NSCaseInsensitiveSearch].length >0 ) {
                [_showData addObject:tempStr];
                NSLog(@"%d",[_showData count]);
            }
        }
        [_tableView reloadData];
    }
    else
    {
        self.showData = [NSMutableArray arrayWithArray:_dataList];
        [_tableView reloadData];
    }

}

-(void) searchBarSearchButtonClicked:(UISearchBar *)searchBar {
    [self searchBar:self.searchBar textDidChange:nil];
    [_searchBar resignFirstResponder];
}

- (void)searchBarCancelButtonClicked:(UISearchBar *) searchBar
{
    [self searchBar:self.searchBar textDidChange:nil];
    [_searchBar resignFirstResponder];
}