ios - 如何在搜索栏中搜索内容而不按iOS中的按钮？

Question

我想在我的搜索栏中搜索内容而不按搜索按钮意味着当我在搜索栏中输入任何文本时自动搜索在我清除或取消搜索时过滤内容然后在此处显示我的主要内容列表我为搜索栏实现代码

-(void)SearchBarCode
{ 
    self.disableViewOverlay.backgroundColor=[UIColor blackColor];
    self.disableViewOverlay.alpha = 0;
    theSearchBar = [[UISearchBar alloc]initWithFrame:CGRectMake(-61, 46, 378.0f, 50)];
    theSearchBar.autoresizingMask = UIViewAutoresizingFlexibleWidth;
    UIView *searchBarView = [[UIView alloc] initWithFrame:CGRectMake(0.0, 46, 310.0, 44.0)];
    searchBarView.autoresizingMask = 0;
    theSearchBar.delegate =self;
    [searchBarView addSubview:theSearchBar];
    self.navigationItem.title=@"Insta SMS Collection";
    self.navigationItem.titleView=searchBarView;
    theSearchBar.placeholder = @"Search";
}

- (void)viewDidAppear:(BOOL)animated
{
    [self.theSearchBar resignFirstResponder];
    [super viewDidAppear:animated];
}

- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar
{
    theSearchBar.showsScopeBar = YES;
    [theSearchBar invalidateIntrinsicContentSize];
    [theSearchBar setShowsCancelButton:YES animated:YES];
}

- (void)searchBarTextDidEndEditing:(UISearchBar *)searchBar
{
    [theSearchBar invalidateIntrinsicContentSize];
    [theSearchBar setShowsCancelButton:NO animated:YES];
}

- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar
{
    scrollView.scrollEnabled = TRUE;
    theSearchBar.text = @"";

    theSearchBar.text = @"";
    [theSearchBar setShowsCancelButton: NO animated: YES];
    [theSearchBar resignFirstResponder];
}

- (void)searchTableList
{
    NSString *searchString = theSearchBar.text;
    filteredContentList = [[NSMutableArray alloc]init];

    for (SMSCategory *cat in Arrayobject)
    {
        NSString *tempStr = cat.Name;
        NSComparisonResult result = [tempStr compare:searchString options: (NSCaseInsensitiveSearch|NSDiacriticInsensitiveSearch) range:NSMakeRange(0, 
        [searchString length])];
        if (result == NSOrderedSame)
        {
            [filteredContentList addObject:cat];
        }
    }
}

- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
    scrollView.scrollEnabled = TRUE;

    [theSearchBar resignFirstResponder];
    [theSearchBar setShowsCancelButton: NO animated: YES];

    [self searchTableList];
    [self DynamicButton:filteredContentList];
    [self viewDidAppear:true];
}

.h 文件 代码

@interface CategoryMainWindowViewController : UIViewController<UISearchBarDelegate,UITextViewDelegate>{
    NSMutableArray *Arrayobject;
    UIView *disableViewOverlay;
    UITableView *theTableView;
    UISearchBar *theSearchBar;
    NSMutableArray *filteredContentList;
    BOOL isSearching;
}

@property(retain) UIView *disableViewOverlay;
@property(retain) NSMutableArray *Arrayobject;
@property (nonatomic, retain) IBOutlet UITableView *theTableView;
@property (nonatomic, retain) IBOutlet UISearchBar *theSearchBar;
@property(nonatomic,retain) UIScrollView *scrollView;
@property(strong,nonatomic) NSString *databasePath;

-(void)searchBar:(UISearchBar *)searchBar activate:(BOOL) active;
-(void)DynamicButton:(NSMutableArray*)objectName;
-(NSMutableArray*)GetData;

@end

Answer 1

您可以实现委托(delegate)方法

- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText;

每次用户输入字符时都会调用它。然后，您只需使用给定的字符串进行搜索。

例如，您可以调用在单击搜索本身时调用的方法:

- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{
    [self searchBarSearchButtonClicked:searchBar];
}