UISearchBar 与 iMac Finder 搜索功能相同
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【中文标题】UISearchBar 与 iMac Finder 搜索功能相同【英文标题】：UISearchBar same as like iMac Finder Search Functionality 【发布时间】：2013-06-22 06:42:26 【问题描述】：我遇到了一个要求，其中我有 UISearchBar，如下所示。
步骤：1（搜索栏的初始外观）
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（在搜索栏上添加按钮）
第 5 步（最后对按钮执行操作）
这可能会继续。我的意思是他可以输入更多的文字，但功能应该是一样的。
谁能帮帮我？拜托，我有需要。
更新
您可以在 iMac Finder 搜索上观看相同的功能
这是我尝试过的。
#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
【问题讨论】：
你解释问题的方式太棒了..... 如果你能减小你的字体大小会很好看。 由于您似乎没有特别的问题，这里有一条建议：创建单独的类，例如带有弹出框的按钮跨度，搜索字段的另一个弹出框等。这样更容易划分将问题转化为任务，在某些时候它们会一起工作。 确切地说，创建一个具有搜索功能和委托方法的自定义UIView。之后为选定的搜索标签创建自定义UIButtons。
请叫我 manohar。
【参考方案1】：
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，我想出了一些我认为符合要求的东西。请记住，这只会显示您要询问的内容（并且在这方面做得有些差），它不处理实际的搜索功能，因为我不确定您在搜索什么。它还具有一些您想要更改的静态值（例如文件类型数组，我将视图控制器放入UINavigationController 并基于此做了一些静态大小）。我使用WYPopoverController，可以在这里找到：WYPopoverController。让我知道它是如何为您工作的 - 如果有，请随时批评。
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
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
【讨论】：
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