UISearchBar giống như iMac Finder Chức năng tìm kiếm

Question

Tôi đã đáp ứng yêu cầu trong đó tôi đã có UISearchBar như sau.

Bước: 1 (cái nhìn ban đầu của thanh tìm kiếm)

Bước: 2 (loại tài khoản chuỗi và ngay lập tức kiếm)

Bước: 3 (Chọn một trong số chúng trong Danh sách Tìm kiếm)

Bước: 4 (Thêm nút trên thanh tìm kiếm)

Bước: 5 (Cuối cùng hành động vào nút)

Điều này có thể tiếp tục. Ý tôi là anh ta có thể nhập thêm văn bản nhưng chức năng phải giống nhau.

Có ai vui lòng giúp tôi không? Xin vui lòng, tôi đang có nhu cầu.

CẬP NHẬT

Bạn có thể xem chức năng này tương tự trên của bạn iMac Finder Tìm kiếm

Đây là những gì tôi đã cố gắng.

#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

TỪ BỎ: giải pháp này rất thiếu sót, có thể theo nhiều cách. Đó là giải pháp đầu tiên mà tôi đã đưa ra và tôi đã thực hiện tối ưu hóa rất ít trên nó (aka none).

Vì vậy, tôi đã chán, và tôi nghĩ ra điều gì đó mà tôi nghĩ phù hợp với dự luật. Hãy nhớ rằng điều này chỉ hiển thị những gì bạn đang hỏi (và nó hơi kém ở đó), nó không xử lý chức năng tìm kiếm thực tế vì tôi không chắc bạn đang tìm kiếm gì. Nó cũng có một số giá trị tĩnh được lập trình trong (chẳng hạn như mảng loại tệp và tôi đã giảm trình điều khiển chế độ xem thành một UINavigationController và đã thực hiện một số kích thước tĩnh dựa trên đó) mà bạn sẽ muốn thay đổi. Tôi sử dụng số WYPopoverController, có thể tìm thấy tại đây: WYPopoverController. Hãy cho tôi biết làm thế nào nó hoạt động cho bạn - cảm thấy tự do để phê phán địa ngục ra nếu nó.

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