我遇到了一个要求，其中我有 UISearchBar，如下所示。
步骤:1(SearchBar 的初始外观)
步骤:2(用户输入字符串并立即搜索)
步骤:3(在搜索列表中选择其中任何一个)
步骤:4(在 SearchBar 上添加按钮)
步骤:5(最后在按钮上操作)
这可能会继续下去。我的意思是他可以进一步输入文本，但功能应该是相同的。
有人可以帮帮我吗？拜托，我有需要。
更新
您可以在 iMac Finder Search 上看到同样的功能
这是我试过的。
#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
最佳答案
免责声明:此解决方案存在严重缺陷，可能在很多方面。这是我想出的第一个解决方案，我对它做了很少的优化(也就是没有)。
所以，我很无聊，想出了一些我认为符合要求的东西。请记住，这只会显示您所询问的内容(而且在这方面做得有点差)，它不会处理实际的搜索功能，因为我不确定您在搜索什么。它还在其中编程了一些静态值(例如文件类型数组，我将 View Controller 放入 UINavigationController 并基于它做了一些静态大小)，您将想要更改这些值。我使用 WYPopoverController，可以在这里找到:WYPopoverController .让我知道它是如何为你工作的——如果它可以，请随意批评。
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
搜索按钮.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
搜索按钮.m
no changes to default generated
关于iphone - UISearchBar 与 iMac Finder 搜索功能相同，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/17248080/