UISearchBar+UItableView组合使用

不多说，上代码，直接拿来用就行了，别客气哈。。。

#import "BaseSearchViewController.h"
#define cellIdentify @"cellReuse"
@interface BaseSearchViewController ()<UITableViewDelegate,UITableViewDataSource,UISearchBarDelegate>

@property(nonatomic, strong) UITableView *tableView;
@property(nonatomic, strong) UISearchBar *searchBar;
@property (nonatomic,strong) UIButton *backgroundView;//淡黑色半透明遮盖view
@property(nonatomic, strong) NSString *placeHolder;
@property(nonatomic, assign) BOOL dismissAfterSeleted;//选择后，退出搜索
@property(nonatomic, assign) BOOL shouldShowSearchReaults;
@property (nonatomic,strong)NSMutableArray *searchArrays;

@end

@implementation BaseSearchViewController

- (NSMutableArray *)searchArrays {
    if (!_searchArrays) {
        _searchArrays = [NSMutableArray array];
    }
    return _searchArrays;
}

- (UIButton *)backgroundView {
    if (!_backgroundView) {
        _backgroundView =[[UIButton alloc]initWithFrame:self.view.bounds];
        [_backgroundView addTarget:self action:@selector(cancelSearch) forControlEvents:UIControlEventTouchUpInside];
        _backgroundView.backgroundColor =[UIColor blackColor];
        _backgroundView.alpha =0.3;
    }
    return _backgroundView;
}

- (UISearchBar *)searchBar {
    if (!_searchBar) {
        _searchBar = [[UISearchBar alloc] init];
        _searchBar.delegate = self;
        _searchBar.placeholder = @"search here ...";
        [_searchBar sizeToFit];
        _searchBar.showsCancelButton = YES;
    }
    return _searchBar;
}

#pragma mark - setter 方法
- (void)setShouldShowSearchReaults:(BOOL)shouldShowSearchReaults {
    _shouldShowSearchReaults = shouldShowSearchReaults;
    self.tableView.hidden = !shouldShowSearchReaults;
    if (shouldShowSearchReaults) {
        [self.view bringSubviewToFront:self.tableView];
        [self.tableView reloadData];
    }else {
        [self.backgroundView removeFromSuperview];
    }
    self.searchBar.showsCancelButton = shouldShowSearchReaults;
}

- (void)setPlaceHolder:(NSString *)placeHolder {
    if (_placeHolder != placeHolder) {
        _placeHolder = placeHolder;
        self.searchBar.placeholder = placeHolder;
    }
}

#pragma mark - view
- (void)viewDidLoad {
    [super viewDidLoad];
    [self initView];
}

- (void)initView {
    self.view.backgroundColor = [UIColor whiteColor];
    self.shouldShowSearchReaults = false;
    CGRect frame = self.view.bounds;
    CGRect rect = [[UIApplication sharedApplication] statusBarFrame];
    CGFloat height =  rect.size.height;
    CGFloat navigationheight = self.navigationController.navigationBar.frame.size.height;
    CGRect bframe = self.searchBar.frame;
    bframe.origin.y += (height + navigationheight);
    self.searchBar.frame = bframe;
    [self.view addSubview:self.searchBar];
    frame.origin.y += (CGRectGetHeight(bframe) + CGRectGetMinY(bframe));
    frame.size.height -= CGRectGetMinY(frame);
    self.tableView = [[UITableView alloc] initWithFrame:frame];
    self.tableView.delegate = self;
    self.tableView.dataSource = self;
    [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:cellIdentify];
    self.tableView.tableFooterView = [UIView new];
    [self.view addSubview:self.tableView];
    [self.tableView reloadData];
    self.tableView.hidden = !self.shouldShowSearchReaults;
    self.backgroundView.frame = frame;
}

//点击遮罩，改变搜索状态
-(void)cancelSearch {
    [self searchBarCancelButtonClicked:self.searchBar];
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
     return self.searchArrays.count;
 }
 
 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    
     UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:cellIdentify];
     if (cell == nil) {
         cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:cellIdentify];
     }
     cell.textLabel.text = sqlite.buildName;
     return cell;
 }
 
 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
     [self.searchBar resignFirstResponder];
     [tableView deselectRowAtIndexPath:indexPath animated:YES];
 }

#pragma mark - search Bar
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
    NSString *filterString = searchBar.text;
    if (filterString.length <= 0) {
        return;
    }
    [self.backgroundView removeFromSuperview];
   
}

 - (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {
     if (!self.shouldShowSearchReaults) {
         self.shouldShowSearchReaults = YES;
     }
     [self.backgroundView removeFromSuperview];
     [searchBar resignFirstResponder];
 }
 
 - (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar {
     [self.searchArrays removeAllObjects];
     self.shouldShowSearchReaults = false;
     [self.searchBar resignFirstResponder];
     searchBar.text = @"";
}

- (BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar {
    [self.searchArrays removeAllObjects];
    self.shouldShowSearchReaults = YES;
    if (self.shouldShowSearchReaults) {
        [self.view addSubview:self.backgroundView];
    }
   
    return YES;
}

- (BOOL)searchBarShouldEndEditing:(UISearchBar *)searchBar {
    [self.searchBar resignFirstResponder];
    return YES;
}

#pragma mark - 直接读取
- (CGRect)searchBarFrame {
    return self.searchBar.frame;
}

@end