UISearchBar taki sam jak iMac Finder Funkcjonalność wyszukiwania

Question

Spotkałem się z wymogiem, w którym miałem UISearchBar jak następuje.

Krok: 1 (Initial wygląd paska wyszukiwania)

Krok: 2 (Typy użytkowników łańcuchowe i natychmiastowe Search)

krok: 3 (Wybór dowolnego z nich na liście wyszukiwania)

krok: 4 (Dodanie przycisk na paska wyszukiwania)

Etap 5 (koniec działania na przycisku)

To może być kontynuowane. Chodzi mi o to, że może wprowadzić tekst dalej, ale funkcjonalność powinna być taka sama.

Czy ktoś mógłby mi pomóc? Proszę, jestem w potrzebie.

UPDATE

Można oglądać tę samą funkcjonalność na iMacu Finder Szukaj

To co próbowałem.

#import "ViewController.h" 
#import "customPopOverController.h" 
#import <QuartzCore/QuartzCore.h> 
@interface ViewController() 
@property (strong, nonatomic) UIView *searchView; 
@property (strong, nonatomic) UITableView *sampleView; 
@property (strong, nonatomic) NSMutableArray *arrayForListing; 
@property (strong, nonatomic) UITextField *txtFieldSearch; 
@end 

@implementation ViewController 
@synthesize searchView = _searchView; 
@synthesize customPopOverController = _customPopOverController; 
@synthesize txtFieldSearch = _txtFieldSearch; 
@synthesize sampleView = _sampleView; 
@synthesize arrayForListing = _arrayForListing; 
@synthesize btnforExtra = _btnforExtra; 
- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    self.arrayForListing = [[NSMutableArray alloc]init]; 
    [self loadTheSearchView]; 
    [self applyUIStyle]; 
} 
- (void)loadTheSearchView 
{ 
    self.searchView = [[UIView alloc]initWithFrame:CGRectMake(20, 100, 280, 44)]; 
    [self.searchView setBackgroundColor:[UIColor whiteColor]]; 
    [self.view addSubview:self.searchView]; 
    [self placeTheTextView]; 
} 
- (void)placeTheTextView 
{ 
    self.txtFieldSearch = [[UITextField alloc]initWithFrame:CGRectMake(25, 9, 230, 30)]; 
    [self.txtFieldSearch setDelegate:self]; 
    [self.searchView addSubview:self.txtFieldSearch]; 
} 
- (void)applyUIStyle 
{ 
    self.searchView.layer.cornerRadius = 20.0f; 
} 
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField 
{ 
    return YES; 
} 
- (void)textFieldDidBeginEditing:(UITextField *)textField 
{ 
} 
- (BOOL)textFieldShouldEndEditing:(UITextField *)textField 
{ 
    return YES; 
} 
- (void)textFieldDidEndEditing:(UITextField *)textField 
{ 

} 
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string 
{ 
    if(textField.text.length!=0) 
    { 
     [self.arrayForListing removeAllObjects]; 
     [self.arrayForListing addObject:[NSString stringWithFormat:@"File Contains %@",textField.text]]; 

     [self callThePop]; 
    } 
    return YES; 
} 
- (void)callThePop 
{ 
    UIViewController *contentViewController = [[UIViewController alloc] init]; 
    contentViewController.contentSizeForViewInPopover = CGSizeMake(self.searchView.frame.size.width, 50); 
    self.sampleView = [[UITableView alloc]initWithFrame:CGRectMake(0, 0, contentViewController.contentSizeForViewInPopover.width, contentViewController.contentSizeForViewInPopover.height)]; 
    [self.sampleView setDelegate:self]; 
    [self.sampleView setDataSource:self]; 
    [self.sampleView setSeparatorStyle:UITableViewCellSeparatorStyleSingleLineEtched]; 
    [self.sampleView setBackgroundColor:[UIColor clearColor]]; 
    [contentViewController.view addSubview:self.sampleView]; 

    self.customPopOverController = [[customPopOverController alloc]initWithContentViewController:contentViewController]; 
    self.customPopOverController.delegate = self; 

    UISwipeGestureRecognizer *swipeRight = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(callYourMethod:)]; 
    swipeRight.direction = UISwipeGestureRecognizerDirectionRight; 
    [self.sampleView addGestureRecognizer:swipeRight]; 

    [self.customPopOverController presentPopoverFromRect:self.searchView.frame inView:self.view permittedArrowDirections:(UIPopoverArrowDirectionUp|UIPopoverArrowDirectionDown| UIPopoverArrowDirectionLeft|UIPopoverArrowDirectionRight) animated:YES]; 
} 
- (BOOL)textFieldShouldClear:(UITextField *)textField 
{ 
    return YES; 
} 
- (BOOL)textFieldShouldReturn:(UITextField *)textField 
{ 
    [textField resignFirstResponder]; 
    return YES; 
} 
- (void)didReceiveMemoryWarning 
{ 
    [super didReceiveMemoryWarning]; 
} 
#pragma mark - Table View Delegate Methods 
#pragma mark 
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
    return self.arrayForListing.count; 
} 
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView 
{ 
    return 1; 
} 
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    static NSString *CellIdentifer = @"Cell"; 
    UITableViewCell *cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifer]; 
    if (cell == nil) 
    { 
     cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifer]; 
    } 
    cell.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; 
    [cell.textLabel setTextAlignment:UITextAlignmentCenter]; 
    [cell.textLabel setNumberOfLines:0]; 
    [cell.textLabel setLineBreakMode:UILineBreakModeCharacterWrap]; 
    cell.textLabel.text = [self.arrayForListing objectAtIndex:indexPath.row]; 
    [cell.textLabel setFont:[UIFont fontWithName:@"TrebuchetMS" size:14]]; 
    cell.textLabel.textColor = [UIColor whiteColor]; 
    return cell; 
} 
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    if (self.customPopOverController) 
    { 
     [self.customPopOverController dismissPopoverAnimated:YES]; 
    } 
    UITableViewCell * cell = (UITableViewCell *)[tableView cellForRowAtIndexPath:indexPath]; 
    if (self.txtFieldSearch.text.length == 0) 
    { 
     self.txtFieldSearch.text = cell.textLabel.text; 
    } 
    else 
    { 
     self.btnforExtra = [[UIButton alloc]initWithFrame:CGRectMake(10+(buttonsCount*45), 8, 45, 25)]; 
     [self.btnforExtra setBackgroundColor:[UIColor colorWithRed:0.503 green:0.641 blue:0.794 alpha:1.000]]; 
     [self.btnforExtra setTitle:self.txtFieldSearch.text forState:UIControlStateNormal]; 
     [self.btnforExtra setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; 
     [self.btnforExtra.layer setCornerRadius:8.0f]; 
     [self.txtFieldSearch setFrame:CGRectMake(self.btnforExtra.frame.origin.x+self.btnforExtra.frame.size.width+10, 9, 230, 30)]; 
     self.txtFieldSearch.text = @""; 
     [self.searchView addSubview:self.btnforExtra]; 
     buttonsCount++; 
    } 
} 
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    if (tableView.editing == UITableViewCellEditingStyleDelete) 
    { 
     [tableView beginUpdates]; 
     [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationLeft]; 
     [self.arrayForListing removeObjectAtIndex:indexPath.row]; 
     [tableView endUpdates]; 
    } 
} 
- (void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath 
{ 
    NSLog(@"IndexPath.row == %i", indexPath.row); 
} 
#pragma mark - custom PopOver Delegate Methods 
#pragma mark 
- (BOOL)popoverControllerShouldDismissPopover:(customPopOverController *)thePopoverController 
{ 
    return YES; 
} 
- (void)popoverControllerDidDismissPopover:(customPopOverController *)thePopoverController 
{ 
    self.customPopOverController = nil; 
} 

@end 

Answer 1

ZASTRZEŻENIE: to rozwiązanie jest głęboko wadliwy, prawdopodobnie na wiele sposobów. To pierwsze rozwiązanie, na które wpadłem i zrobiłem BARDZO małą optymalizację (aka none).

Tak więc byłem znudzony i wymyśliłem coś, co według mnie pasuje do ustawy. Pamiętaj, że to tylko pokazuje, o co pytasz (i robi to trochę źle), nie obsługuje rzeczywistej funkcji wyszukiwania, ponieważ nie jestem pewien, czego szukasz. Ma również pewne zaprogramowane wartości statyczne (takie jak tablica typów plików, a ja upuściłem kontroler widoku do postaci o pewnych rozmiarach statycznych), które będziesz chciał zmienić. Używam WYPopoverController, które można znaleźć tutaj: WYPopoverController. Daj mi znać, jak to działa dla Ciebie - jeśli to możliwe, skrupulatnie skrytykuj.

ViewController.h

@interface ViewController : UIViewController <UITextFieldDelegate, UITableViewDelegate, UITableViewDataSource> 
{ 
} 

ViewController.m

#import "ViewController.h" 
#import "WYPopoverController.h" 
#import "SearchButton.h" 
#import <QuartzCore/QuartzCore.h> 

@interface ViewController() <WYPopoverControllerDelegate> 
{ 
    UITextField *searchField; 

    UIView *searchesView; 
    UIScrollView *scrollView; 
    WYPopoverController *newSearchController; 
    WYPopoverController *existingSearchController; 
    NSMutableArray *buttonsArray; 
    SearchButton *activeButton; 
    NSArray *kindsArray; 
    NSMutableArray *matchedKinds; 

    // using UITableViewController instead of just UITableView so I can set preferredContentSize on the controller 
    UITableViewController *searchTable; 
    UITableViewController *existingTable; 
} 

@end 

@implementation ViewController 

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil 
{ 
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; 
    if (self) { 
     // Custom initialization 
    } 
    return self; 
} 

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view from its nib. 

    searchField = [[UITextField alloc] initWithFrame:CGRectMake(20, 75, 280, 30)]; 
    searchField.borderStyle = UITextBorderStyleRoundedRect; 
    searchField.autocorrectionType = UITextAutocorrectionTypeNo; 
    searchField.delegate = self; 
    [self.view addSubview:searchField]; 

    searchesView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 0, searchField.frame.size.height)]; 
    scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 0, searchField.frame.size.height)]; 

    [scrollView addSubview:searchesView]; 

    searchField.leftView = scrollView; 
    searchField.leftViewMode = UITextFieldViewModeAlways; 
    [searchField becomeFirstResponder]; 

    kindsArray = [NSArray arrayWithObjects:@"Audio", @"Video", @"Other", @"Text", nil]; 
    matchedKinds = [[NSMutableArray alloc] init]; 
    buttonsArray = [[NSMutableArray alloc] init]; 

    [searchField addTarget:self 
        action:@selector(textFieldDidChange:) 
      forControlEvents:UIControlEventEditingChanged]; 
} 

- (void)didReceiveMemoryWarning 
{ 
    [super didReceiveMemoryWarning]; 
    // Dispose of any resources that can be recreated. 
} 


#pragma mark - Text Field Delegate 

- (BOOL)textFieldShouldReturn:(UITextField *)textField 
{ 
    [newSearchController dismissPopoverAnimated:YES completion:^{ 
     [self popoverControllerDidDismissPopover:newSearchController]; 
    }]; 

    return YES; 
} 

// not technically part of the TF delegate, but it fits better here 
- (void)textFieldDidChange:(UITextField *)tf 
{ 
    if(tf.text.length > 0) 
    { 
     if(newSearchController == nil) 
     { 
      searchTable = [[UITableViewController alloc] init]; 
      searchTable.tableView.delegate = self; 
      searchTable.tableView.dataSource = self; 
      searchTable.preferredContentSize = CGSizeMake(320, 136); 

      newSearchController = [[WYPopoverController alloc] initWithContentViewController:searchTable]; 
      newSearchController.delegate = self; 
      newSearchController.popoverLayoutMargins = UIEdgeInsetsMake(10, 10, 10, 10); 
      newSearchController.theme.arrowHeight = 5; 
      searchTable.tableView.tag = 1; 

      [newSearchController presentPopoverFromRect:searchField.bounds 
               inView:searchField 
           permittedArrowDirections:WYPopoverArrowDirectionUp 
               animated:YES 
               options:WYPopoverAnimationOptionFadeWithScale]; 
     } 

     [matchedKinds removeAllObjects]; 
     for(NSString *type in kindsArray) 
     { 
      NSRange foundRange = [[type lowercaseString] rangeOfString:[tf.text lowercaseString]]; 
      if(foundRange.location != NSNotFound) 
      { 
       // Found a match! 
       [matchedKinds addObject:type]; 
      } 
     } 

     [searchTable.tableView reloadData]; 
    } 
    else 
    { 
     [newSearchController dismissPopoverAnimated:YES completion:^{ 
      [self popoverControllerDidDismissPopover:newSearchController]; 
     }]; 
    } 
} 



#pragma mark - Table view data source 

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView 
{ 
    if(tableView.tag == 1) 
     return 2; 

    return 1; 
} 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
    if(tableView.tag == 1) 
    { 
     if(section == 0) 
      return 1; 

     return [matchedKinds count]; 
    } 

    return 3; 
} 

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section 
{ 
    if(tableView.tag == 1) 
    { 
     if(section == 0) 
      return @"Filenames"; 
     else 
      return @"Kinds"; 
    } 

    return nil; 
} 

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    return 30.0f; 
} 


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    UITableViewCell *cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault 
                reuseIdentifier:@"reuser"]; 

    // Configure the cell... 
    if(tableView.tag == 1) 
    { 
     if(indexPath.section == 0) 
     { 
      cell.textLabel.text = [NSString stringWithFormat:@"Name matches: %@", searchField.text]; 

     } 
     else 
     { 
      cell.textLabel.text = [matchedKinds objectAtIndex:indexPath.row]; 
     } 
    } 
    else 
    { 
     if(indexPath.row == 0) 
     { 
      switch (tableView.tag) { 
       case 2: 
        cell.textLabel.text = @"Filename"; 
        break; 

       default: 
        cell.textLabel.text = @"Kind"; 
        break; 
      } 
     } 
     else if(indexPath.row == 1) 
      cell.textLabel.text = @"Everything"; 
     else 
      cell.textLabel.text = @"<Delete>"; 

    } 


    return cell; 
} 


#pragma mark - Table view delegate 

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    if(tableView.tag == 1) // new search table tapped 
    { 
     SearchButton *searchedButton = [SearchButton buttonWithType:UIButtonTypeSystem]; 

     if(indexPath.section == 0) 
     { 
      searchedButton.type = ButtonTypeName; 
      searchedButton.searchedString = searchField.text; 
     } 
     else 
     { 
      searchedButton.type = ButtonTypeKind; 
      searchedButton.searchedString = [matchedKinds objectAtIndex:indexPath.row]; 
     } 

     searchedButton.defaulted = YES; 
     searchedButton.titleLabel.font = [UIFont systemFontOfSize:14.0f]; 
     [searchedButton setTitleColor:[UIColor darkTextColor] 
          forState:UIControlStateNormal]; 
     [searchedButton addTarget:self 
          action:@selector(buttonTapped:) 
       forControlEvents:UIControlEventTouchUpInside]; 
     [searchedButton setBackgroundColor:[UIColor colorWithWhite:0.9f alpha:1.0f]]; 
     searchedButton.layer.cornerRadius = 5.0f; 
     searchedButton.clipsToBounds = YES; 
     [buttonsArray addObject:searchedButton]; 
     activeButton = searchedButton; 
     searchField.text = @""; 

     [self updateButtonsFromCreation:YES]; 


     [newSearchController dismissPopoverAnimated:YES completion:^{ 
      [self popoverControllerDidDismissPopover:newSearchController]; 
     }]; 
    } 
    else // text field of an existing search 
    { 
     switch (indexPath.row) { 
      case 0: 
       activeButton.defaulted = YES; 
       break; 

      case 1: 
       activeButton.defaulted = NO; 
       break; 

      default: 
       [buttonsArray removeObject:activeButton]; 
       break; 
     } 

     [self updateButtonsFromCreation:NO]; 
     [existingSearchController dismissPopoverAnimated:YES completion:^{ 
      [self popoverControllerDidDismissPopover:existingSearchController]; 
     }]; 


    } 
} 


#pragma mark - Popover delegate 

- (void)popoverControllerDidDismissPopover:(WYPopoverController *)controller 
{ 
    if(controller == newSearchController) 
    { 
     newSearchController = nil; 
    } 
    else 
    { 
     existingSearchController = nil; 
    } 
} 



#pragma mark - Other functions 

- (void)updateButtonsFromCreation:(BOOL)creation 
{ 
    [[searchesView subviews] makeObjectsPerformSelector:@selector(removeFromSuperview)]; 
    float widthTotal = 0; 
    for(SearchButton *button in buttonsArray) 
    { 
     NSString *buttonText; 

     if(button.defaulted) 
     { 
      if(button.type == ButtonTypeName) 
       buttonText = @"Name: "; 
      else 
       buttonText = @"Kind: "; 
     } 
     else 
      buttonText = @"Any: "; 

     buttonText = [buttonText stringByAppendingString:button.searchedString]; 

     [button setTitle:buttonText forState:UIControlStateNormal]; 
     CGSize buttonSize = [buttonText sizeWithAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:14.0f]}]; 
     button.frame = CGRectMake(widthTotal + 2, 2, buttonSize.width + 4, searchField.frame.size.height - 4); 
     widthTotal += button.frame.size.width + 2; 

     [searchesView addSubview:button]; 
    } 

    searchesView.frame = CGRectMake(0, 0, widthTotal, searchesView.frame.size.height); 
    scrollView.frame = CGRectMake(0, 0, ((widthTotal > 200) ? 200 : widthTotal), scrollView.frame.size.height); 
    scrollView.contentSize = CGSizeMake(widthTotal, scrollView.frame.size.height); 

    if(creation) 
    { 
     scrollView.contentOffset = CGPointMake(activeButton.frame.origin.x, 0); 
    } 
} 


- (void)buttonTapped:(SearchButton *)sender 
{ 
    activeButton = sender; 
    existingTable = [[UITableViewController alloc] init]; 
    existingTable.tableView.delegate = self; 
    existingTable.tableView.dataSource = self; 
    existingTable.preferredContentSize = CGSizeMake(160, 90); 

    existingSearchController = [[WYPopoverController alloc] initWithContentViewController:existingTable]; 
    existingSearchController.delegate = self; 
    existingSearchController.popoverLayoutMargins = UIEdgeInsetsMake(10, 10, 10, 10); 
    existingSearchController.theme.arrowHeight = 5; 
    existingTable.tableView.tag = sender.type; 

    [existingSearchController presentPopoverFromRect:sender.frame 
               inView:scrollView 
          permittedArrowDirections:WYPopoverArrowDirectionUp 
              animated:YES 
              options:WYPopoverAnimationOptionFadeWithScale]; 
} 


@end 

SearchButton.h

typedef enum {ButtonTypeName = 2, 
       ButtonTypeKind = 3} ButtonType; 

@interface SearchButton : UIButton 

@property (nonatomic) ButtonType type; 
@property (nonatomic) BOOL defaulted; 
@property (nonatomic, retain) NSString *searchedString; 

@end 

SearchButton.m

no changes to default generated