iOS搜索框功能的实现／UISearchBar/UISearchController的使用,搜索控制器框架

搜索控制器框架PYSearch：https://github.com/ko1o/PYSearch 搜索框功能的实现方法有多种：1.使用UITextField自己封装；2.UISearchBarController3.UISearchBar===========================举例一：searchBarController实现 //UIS...

liyubao160

2581人浏览 · 2016-04-28 21:38:43

liyubao160 · 2016-04-28 21:38:43 发布

搜索控制器框架

PYSearch：https://github.com/ko1o/PYSearch

搜索框功能的实现方法有多种：

1.使用UITextField自己封装；

2.UISearchBarController

3.UISearchBar

===========================

举例一：searchBarController实现

//UISearchBar，

//属性作用

//UIBarStyle barStyle 控件的样式

//id<UISearchBarDelegate> delegate 设置控件的委托

//NSString *text 控件上面的显示的文字

//NSString *prompt显示在顶部的单行文字，通常作为一个提示行

//NSString *placeholder 半透明的提示文字，输入搜索内容消失

//BOOL showsBookmarkButton 是否在控件的右端显示一个书的按钮(没有文字的时候)

//BOOL showsCancelButton 是否显示cancel按钮

//BOOL showsSearchResultsButton 是否在控件的右端显示搜索结果按钮(没有文字的时候)

//BOOL searchResultsButtonSelected 搜索结果按钮是否被选中

//UIColor *tintColor bar的颜色(具有渐变效果)

//BOOL translucent 指定控件是否会有透视效果

//UITextAutocapitalizationType

//autocapitalizationType 设置在什么的情况下自动大写

//UITextAutocorrectionType

//autocorrectionType 对于文本对象自动校正风格

//UIKeyboardType

//keyboardType 键盘的样式

//NSArray *scopeButtonTitles 搜索栏下部的选择栏，数组里面的内容是按钮的标题

//NSInteger selectedScopeButtonIndex搜索栏下部的选择栏按钮的个数

//BOOL showsScopeBar 控制搜索栏下部的选择栏是否显示出来

//代理列表：

//编辑代理

//– searchBar:textDidChange:

//– searchBar:shouldChangeTextInRange:replacementText:

//– searchBarShouldBeginEditing:

//– searchBarTextDidBeginEditing:

//– searchBarShouldEndEditing:

//– searchBarTextDidEndEditing:

//点击按钮

//– searchBarBookmarkButtonClicked:

//– searchBarCancelButtonClicked:

//– searchBarSearchButtonClicked:

//– searchBarResultsListButtonClicked:

//范围代理

//– searchBar:selectedScopeButtonIndexDidChange:

#import "ViewController.h"

@interface ViewController ()<UITableViewDelegate,UITableViewDataSource,UISearchBarDelegate,UISearchResultsUpdating>

@property (nonatomic,strong) UITableView *tableView;

@property (nonatomic,strong) UISearchController * searchController;

@property (nonatomic,strong) NSArray * carNumberArray;//原始数组

@property (nonatomic,strong) NSArray * filteredArray;//过滤后的数组

@property (nonatomic,strong) NSArray * titleArray;

@property(nonatomic,assign) BOOL shouldShowSearchResults;//判断是否显示搜索后的数据

@end

@implementation ViewController

- (NSArray *)titleArray {

if (!_titleArray) {

_titleArray =@[];

}

return_titleArray;

}

- (NSArray *)carNumberArray {

if (!_carNumberArray) {

_carNumberArray =@[@"qwert",@"qwer",@"qwe",@"qw",@"q"];

}

return_carNumberArray;

}

- (void)viewDidLoad {

[superviewDidLoad];

// Do any additional setup after loading the view from its nib.

_tableView = [[UITableViewalloc] initWithFrame:[UIScreenmainScreen].boundsstyle:UITableViewStylePlain];

_tableView.delegate =self;

_tableView.dataSource =self;

[self.viewaddSubview:_tableView];

self.view.backgroundColor = [UIColorclearColor];

[selfconfigureSearchController];

}

- (void)configureSearchController {

_searchController = [[UISearchControlleralloc] initWithSearchResultsController:nil];

_searchController.searchResultsUpdater =self;

_searchController.searchBar.placeholder =@"";

_searchController.dimsBackgroundDuringPresentation =NO;

_searchController.searchBar.delegate = self;

[_searchController.searchBarsizeToFit];

_searchController.searchBar.showsScopeBar=NO;//第一次数显searchbar时不显示，处于编辑状态（或者获得焦点）时会显示

_searchController.searchBar.scopeButtonTitles=@[@"qqq",@"wwww",@"sss",@"ddd"];

UIView *v=[[UIViewalloc]initWithFrame:CGRectMake(0,60, 200, 50)];

v.backgroundColor=[UIColorredColor];

_searchController.searchBar.inputAccessoryView=v;//弹出键盘时会出现在键盘上方的

self.tableView.tableHeaderView = _searchController.searchBar;

}

//当选择不通的scope时调用

-(void)searchBar:(UISearchBar *)searchBar selectedScopeButtonIndexDidChange:(NSInteger)selectedScope{

//在这个方法内可以设置搜索

NSLog(@"scope按钮的索引----%tu",selectedScope);

}

#pragma mark - UISearchBarDelegate

- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar {

self.shouldShowSearchResults =YES;

NSLog(@"开始编辑----%tu",searchBar.selectedScopeButtonIndex);

[self.tableViewreloadData];

}

- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar {

self.shouldShowSearchResults =NO;

NSLog(@"取消----%tu",searchBar.selectedScopeButtonIndex);

[self.tableViewreloadData];

}

- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {

if (!self.shouldShowSearchResults) {

self.shouldShowSearchResults =YES;

[self.tableViewreloadData];

}

NSLog(@"点击search按钮----%tu",searchBar.selectedScopeButtonIndex);

[self.searchController.searchBarresignFirstResponder];

}

#pragma mark - UISearchResultsUpdating

- (void)updateSearchResultsForSearchController:(UISearchController *)searchController {

// NSLog(@"获取scopeIndex----%tu",searchController.searchBar.selectedScopeButtonIndex);

//匹配数组

NSString * searchString = searchController.searchBar.text;

NSPredicate * predicate = [NSPredicate predicateWithFormat:@"SELF CONTAINS %@",searchString];

self.filteredArray = [self.carNumberArrayfilteredArrayUsingPredicate:predicate];

[self.tableViewreloadData];

}

#pragma mark - UITableViewDataSource

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

returnself.shouldShowSearchResults ?self.filteredArray.count :self.carNumberArray.count;

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

staticNSString * cellId = @"car_num_cell_id";

UITableViewCell * cell = [tableViewdequeueReusableCellWithIdentifier:cellId];

if (!cell) {

cell = [[UITableViewCellalloc] initWithStyle:UITableViewCellStyleDefaultreuseIdentifier:cellId];

}

if (self.shouldShowSearchResults) {

cell.textLabel.text =self.filteredArray[indexPath.row];

}else {

cell.textLabel.text =self.carNumberArray[indexPath.row];

}

// cell.imageView.image = [UIImage imageNamed:@"car.png"];

return cell;

}

#pragma mark - UITableViewDelegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

if (self.shouldShowSearchResults) {

//搜索之后，可以点击cell跳转

}else {

}

@end

=============================

1.遍历searchBar中的子控件,可以修改子控件属性

// 小技巧: 如果遇到了不认识的类或控件, 可以通过遍历子视图的方式来查看或修改

//UINavigationButton --> UIButton

for (UIView *subView in searchBar.subviews.firstObject.subviews) {

if ([subView isKindOfClass:[UIButton class]]) {

//NSLog(@"subView:%@",subView);

// 强转类型, 来更改文字

[(UIButton *)subView setTitle:@"取消" forState:UIControlStateNormal];

}

2.searchBar的属性设置

//1.改变背景图片

[searchBar setBackgroundImage:[UIImageimageNamed:@"bg_login_textfield_hl"]];

//2. 显示取消按钮

[searchBar setShowsCancelButton:YESanimated:YES];

//搜索框清空

searchBar.text=@"";

// 设置searchBar的取消按钮颜色

self.searchBar.tintColor = [UIColor redColor];

3.searchBar的代理方法

#pragma mark 当开始编辑的时候会调用

- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar{}

#pragma mark 当结束编辑的时候会调用

- (void)searchBarTextDidEndEditing:(UISearchBar *)searchBar{}

#pragma mark 取消按钮点击

- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar

{

[self.searchBarresignFirstResponder];//取消编辑状态

}

#pragma mark 文字发生改变时调用的方法

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

{

NSLog(@"searchText:%@",searchText);

if (searchText.length) {

self.citySearchVC.view.hidden =NO;//搜索框有文字时,把原来隐藏的控制器的view显示出来

// 传递搜索框内的文字

self.citySearchVC.searchText = searchText;

} else {

self.citySearchVC.view.hidden =YES;//搜索框没有文字时,最上面的搜索结果控制器的view隐藏

}

#pragma mark - SearchBar代理方法

#pragma mark 搜索按钮点击方法

- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar

{

// 只要调用了开始刷新的方法,就可以执行刷新

[self.collectionView.headerbeginRefreshing];

}

／／=============================

举例二：UISearchBar实现：

//UISearchBar，

//属性作用

//UIBarStyle barStyle 控件的样式

//id<UISearchBarDelegate> delegate 设置控件的委托

//NSString *text 控件上面的显示的文字

//NSString *prompt显示在顶部的单行文字，通常作为一个提示行

//NSString *placeholder 半透明的提示文字，输入搜索内容消失

//BOOL showsBookmarkButton 是否在控件的右端显示一个书的按钮(没有文字的时候)

//BOOL showsCancelButton 是否显示cancel按钮

//BOOL showsSearchResultsButton 是否在控件的右端显示搜索结果按钮(没有文字的时候)

//BOOL searchResultsButtonSelected 搜索结果按钮是否被选中

//UIColor *tintColor bar的颜色(具有渐变效果)

//BOOL translucent 指定控件是否会有透视效果

//UITextAutocapitalizationType

//autocapitalizationType 设置在什么的情况下自动大写

//UITextAutocorrectionType

//autocorrectionType 对于文本对象自动校正风格

//UIKeyboardType

//keyboardType 键盘的样式

//NSArray *scopeButtonTitles 搜索栏下部的选择栏，数组里面的内容是按钮的标题

//NSInteger selectedScopeButtonIndex搜索栏下部的选择栏按钮的个数

//BOOL showsScopeBar 控制搜索栏下部的选择栏是否显示出来

//代理列表：

//编辑代理

//– searchBar:textDidChange:

//– searchBar:shouldChangeTextInRange:replacementText:

//– searchBarShouldBeginEditing:

//– searchBarTextDidBeginEditing:

//– searchBarShouldEndEditing:

//– searchBarTextDidEndEditing:

//点击按钮

//– searchBarBookmarkButtonClicked:

//– searchBarCancelButtonClicked:

//– searchBarSearchButtonClicked:

//– searchBarResultsListButtonClicked:

//范围代理

//– searchBar:selectedScopeButtonIndexDidChange:

#import "ViewController.h"

@interface ViewController ()<UITableViewDelegate,UITableViewDataSource,UISearchBarDelegate,UISearchResultsUpdating>

@property (nonatomic,strong) UITableView *tableView;

@property (nonatomic,strong) UISearchController * searchController;

@property (nonatomic,strong) NSArray * carNumberArray;//原始数组

@property (nonatomic,strong) NSArray * filteredArray;//过滤后的数组

@property (nonatomic,strong) NSArray * titleArray;

@property(nonatomic,assign) BOOL shouldShowSearchResults;//判断是否显示搜索后的数据

@end

@implementation ViewController

- (NSArray *)titleArray {

if (!_titleArray) {

_titleArray =@[];

}

return_titleArray;

}

- (NSArray *)carNumberArray {

if (!_carNumberArray) {

_carNumberArray =@[@"qwert",@"qwer",@"qwe",@"qw",@"q"];

}

return_carNumberArray;

}

- (void)viewDidLoad {

[superviewDidLoad];

// Do any additional setup after loading the view from its nib.

_tableView = [[UITableViewalloc] initWithFrame:[UIScreenmainScreen].boundsstyle:UITableViewStylePlain];

_tableView.delegate =self;

_tableView.dataSource =self;

[self.viewaddSubview:_tableView];

self.view.backgroundColor = [UIColorclearColor];

UISearchBar *searchBar=[[UISearchBaralloc]initWithFrame:CGRectMake(50,20, 200,80)];

//=============

_tableView.tableHeaderView=searchBar;

searchBar.showsCancelButton=YES;

searchBar.delegate=self;

//===============

// UISearchBar *searchBar=[[UISearchBar alloc]initWithFrame:CGRectMake(50, 60, 200, 80)];

// self.searchBar=searchBar;

// searchBar.tintColor=[UIColor blackColor];//取消按钮的颜色

// UIButton *cancelBtn=[searchBar valueForKey:@"cancelButton"];

// [cancelBtn setTitle:@"取消" forState:UIControlStateNormal];

// searchBar.delegate=self;

// searchBar.placeholder=@"asdf";//搜索框中的提示文字

// searchBar.returnKeyType=UIReturnKeySearch;//键盘上确定按钮样式

// // searchBar.keyboardType=UIKeyboardTypeNumberPad;//键盘样式

// // searchBar.showsCancelButton=YES;

// [self.view addSubview:searchBar];

// searchBar.showsScopeBar=YES;//searchbar底下显示选择的范围

// // searchBar.searchBarStyle=UISearchBarStyleMinimal;

// searchBar.showsBookmarkButton=YES;//显示书签按钮

// searchBar.showsSearchResultsButton=YES;//显示搜索结果按钮

// searchBar.searchResultsButtonSelected=YES;//搜索结果按钮为选中状态

// searchBar.barStyle=UIBarStyleDefault;//

// searchBar.text=@"qqqqq";//默认的文本

// searchBar.prompt=@"wwwww";//searchbar上方的提示文字

}

#pragma mark - UISearchBarDelegate

//开始编辑的时候调用

- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar {

self.shouldShowSearchResults =YES;

[self.tableViewreloadData];

NSLog(@"开始编辑");

}

- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar {

self.shouldShowSearchResults =NO;

NSLog(@"取消按钮");

//点击取消按钮后，就取消了搜索，显示原始的数据

[self.tableViewreloadData];

}

//点击了搜索按钮

- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {

NSString * searchString = searchBar.text;

NSPredicate * predicate = [NSPredicate predicateWithFormat:@"SELF CONTAINS %@",searchString];

self.filteredArray = [self.carNumberArrayfilteredArrayUsingPredicate:predicate];

[self.tableViewreloadData];

if (!self.shouldShowSearchResults) {

self.shouldShowSearchResults =YES;

[self.tableViewreloadData];

}

NSLog(@"搜索按钮");

}

#pragma mark - UITableViewDataSource

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

returnself.shouldShowSearchResults ?self.filteredArray.count :self.carNumberArray.count;

}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

staticNSString * cellId = @"car_num_cell_id";

UITableViewCell * cell = [tableViewdequeueReusableCellWithIdentifier:cellId];

if (!cell) {

cell = [[UITableViewCellalloc] initWithStyle:UITableViewCellStyleDefaultreuseIdentifier:cellId];

}

if (self.shouldShowSearchResults) {

cell.textLabel.text =self.filteredArray[indexPath.row];

}else {

cell.textLabel.text =self.carNumberArray[indexPath.row];

}

// cell.imageView.image = [UIImage imageNamed:@"car.png"];

return cell;

}

#pragma mark - UITableViewDelegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

if (self.shouldShowSearchResults) {

//搜索之后，可以点击cell跳转

}else {

}

//============searchController代理方法

//- (void)willPresentSearchController:(UISearchController *)searchController{

// NSLog(@"searchVC将要出现");

//}

//- (void)didPresentSearchController:(UISearchController *)searchController{

// NSLog(@"searchVC已经出现");

//}

//- (void)willDismissSearchController:(UISearchController *)searchController{

// NSLog(@"searchVC将要消失");

//}

//- (void)didDismissSearchController:(UISearchController *)searchController{

// NSLog(@"searchVC 已经消失");

//}

//- (void)presentSearchController:(UISearchController *)searchController{

// NSLog(@"searchBar开始编辑时调用");

//}

//=====================searchBar的代理方法

#pragma mark 当结束编辑的时候会调用

- (void)searchBarTextDidEndEditing:(UISearchBar *)searchBar{

NSLog(@"编辑结束");

}

#pragma mark 文字发生改变时调用的方法

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

{

NSString * searchString = searchBar.text;

NSPredicate * predicate = [NSPredicate predicateWithFormat:@"SELF CONTAINS %@",searchString];

self.filteredArray = [self.carNumberArrayfilteredArrayUsingPredicate:predicate];

[self.tableViewreloadData];

//可以实时获取输入框中的文字

NSLog(@"searchText:%@",searchText);

}

@end

**************搜索控制器框架：https://github.com/ko1o/PYSearch

//搜索控制器
-(void)searchContgroller{
 
    NSArray *hotSeaches = @[@"Java", @"Python", @"Objective-C", @"Swift", @"C", @"C++", @"PHP", @"C#", @"Perl", @"Go", @"JavaScript", @"R", @"Ruby", @"MATLAB"];
   
    PYSearchViewController *searchViewController = [PYSearchViewController searchViewControllerWithHotSearches:hotSeaches searchBarPlaceholder:@"搜索" didSearchBlock:^(PYSearchViewController *searchViewController, UISearchBar *searchBar, NSString *searchText) {
       //搜索结束回调，跳转到结果控制器
        [searchViewController.navigationController pushViewController:[[LYBsearchResultVC alloc] init] animated:YES];
        
    }];
    searchViewController.delegate=self;
    searchViewController.dataSource=self;
    // 1. Set searchResultShowMode
    searchViewController.searchResultShowMode = PYSearchResultShowModeEmbed;
    // 2. Set searchResultController
    searchViewController.searchResultController = [[UIViewController alloc] init];
 
    // Set hotSearchStyle
    searchViewController.hotSearchStyle = PYHotSearchStyleColorfulTag;
 
    // Set searchHistoryStyle
    searchViewController.searchHistoryStyle = PYSearchHistoryStyleBorderTag;
   
    // Set searchHistoriesCachePath
    searchViewController.searchHistoriesCachePath = @"The cache path";
    
    // Set searchHistoriesCount
    searchViewController. searchHistoriesCount = 6;
  
    // Set searchResultShowMode
    searchViewController.searchResultShowMode = PYSearchResultShowModeEmbed;
   
    // Set searchSuggestionHidden
    searchViewController.searchSuggestionHidden = YES;
    UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:searchViewController];
    
    [self presentViewController:nav  animated:NO completion:nil];

}

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