• 搜索框 -- 搜索


    //搜索框

        UIView *searchBarView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, 58)];

        searchBarView.backgroundColor = [UIColor whiteColor];

        [self.view addSubview:searchBarView];

        

        self.searchBar = [[UISearchBar alloc]initWithFrame:CGRectMake(0, 12, SCREEN_WIDTH, 34)];

        [searchBarView addSubview:self.searchBar];

        _searchBar.placeholder = @"输入问题或关键字";

        _searchBar.backgroundImage = [WWTolls imageWithColor:[WWTolls colorWithHexString:@"#FFFFFF"]];

        _searchBar.barTintColor = ZDS_BACK_COLOR;

        _searchBar.clipsToBounds = YES;

        

        UIView *searchTextField = [[[_searchBar.subviews firstObject] subviews] lastObject];

        searchTextField.backgroundColor = [WWTolls colorWithHexString:@"#F7F1F1"];

        searchTextField.layer.cornerRadius = 14;

        searchTextField.clipsToBounds = YES;

        [searchTextField setValue:[WWTolls colorWithHexString:@"#BCBCBC"] forKeyPath:@"_placeholderLabel.textColor"];

        

        [_searchBar setImage:[UIImage imageNamed:@"Imported Layers Copy"] forSearchBarIcon:UISearchBarIconSearch state:UIControlStateNormal];

        _searchBar.barStyle = UIBarStyleDefault;

        _searchBar.delegate = self;

        UITextField *searchField = [_searchBar valueForKey:@"_searchField"];

        searchField.textColor = [WWTolls colorWithHexString:@"#535353"];

    #pragma mark UISearchBarDelegate

    - (void)searchBarCancelButtonClicked:(UISearchBar *) searchBar

    {

        [self.searchBar resignFirstResponder];

    }

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

    {

        NSString *inputStr = searchText;

        

        if([inputStr length] == 0){

            [self searchbarNotext];

            return;

        }

        

        if([WWTolls isHasSensitiveWord:inputStr]){

            [self showAlertMsg:ZDS_HASSENSITIVE yOffset:0];

            return;

        }

        

        NSString *regex = @"[a-zA-Z0-9u4e00-u9fa5]+";

        NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];

        BOOL isMatch = [pred evaluateWithObject:inputStr];

        if(!isMatch){

            DXAlertView *alert = [[DXAlertView alloc] initWithTitle:@"提示" contentText:@"关键字只能由汉字,数字或者英文字母组成" leftButtonTitle:@"" rightButtonTitle:@"确认"];

            [alert show];

        }

        self.searchValue = searchText;

        

        NSLog(@"输入的搜索字符%@",self.searchValue);

    }

    - (BOOL)searchBar:(UISearchBar *)searchBar shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text{

        

        if (range.location > 20) {

            return NO;

        }

        

        return YES;

    }

    #pragma mark 点击键盘上搜索按钮

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

        mob(@"jy_knowhome_search");

        

        [self.searchBar resignFirstResponder];

        

        [self.buttonView removeFromSuperview];

        [self.scrollView removeFromSuperview];

        [self initTableView];

        

        [self showSearch:self.searchValue];

    }

    - (void)initTableView

    {

        _tableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 73, SCREEN_WIDTH,SCREEN_HEIGHT - 73 - 64 - 15 - 50)];

        _tableView.backgroundColor = [WWTolls colorWithHexString:@"#F7F1F1"];

        _tableView.delegate = self;

        _tableView.dataSource = self;

        _tableView.showsVerticalScrollIndicator = NO;

        _tableView.scrollsToTop = YES;

        _tableView.sectionFooterHeight = 0;

        _tableView.sectionHeaderHeight = 0;

        _tableView.separatorStyle = UITableViewCellSeparatorStyleNone;

        [self.view addSubview:_tableView];

    }

    -(void)searchbarNotext{

        [self.searchBar endEditing:YES];

        

        [self.tableView removeFromSuperview];

        [self setGUI];

    }

    // 查询请求

    -(void)showSearch:(NSString*)txt{

        [self showWaitView];

        NSMutableDictionary *dictionary = [NSMutableDictionary dictionary];

        [dictionary setObject:txt forKey:@"criteria"];

        [dictionary setObject:@"1" forKey:@"pageNum"];

        [dictionary setObject:@"99" forKey:@"pageSize"];

        

        [WWRequestOperationEngine operationManagerRequest_Post:@"/search/question.do" parameters:dictionary requestOperationBlock:^(NSDictionary *dic) {

            if (!dic[ERRCODE]) {

                [self removeWaitView];

                

                [self.resultsData removeAllObjects];

                NSArray *tempArray = dic[@"questionlist"];

                

                for (NSDictionary *dic in tempArray) {

                    MinusAboutKnowModel *model = [MinusAboutKnowModel modelWithDic:dic];

                    [self.resultsData addObject:model];

                }

                

                // 将MinusAboutKnowModel数组转化为MinusAboutKnowFrame数组

                NSArray *newFrames = [self knowFramesWithKnow:self.resultsData];

                

                [self.knowFrames removeAllObjects];

                [self.knowFrames addObjectsFromArray:newFrames];

                [self.tableView reloadData];

            }

            

            [self.buttonView removeFromSuperview];

            if (self.knowFrames.count == 0) {

                

                UIView *noResultView = [[UIView alloc] initWithFrame:self.tableView.bounds];

                noResultView.backgroundColor = [WWTolls colorWithHexString:@"#F7F1F1"];

                [self.tableView addSubview:noResultView];

                self.noResultView = noResultView;

                

                UIImageView *tt = [[UIImageView alloc] init];

                tt.image = [UIImage imageNamed:@"kbicon-120"];

                tt.frame = CGRectMake(SCREEN_MIDDLE(60), 85, 60, 60);

                [noResultView addSubview:tt];

                UILabel *ll = [[UILabel alloc] initWithFrame:CGRectMake(0, tt.bottom + 30, SCREEN_WIDTH, 27)];

                ll.font = MyFont(13);

                ll.textColor = [WWTolls colorWithHexString:@"#A7A7A7"];

                ll.textAlignment = NSTextAlignmentCenter;

                ll.text = @"没有搜到相关的内容呢";

                [noResultView addSubview:ll];

                self.noResultView.hidden = NO;

            }else{

                self.noResultView.hidden = YES;

            }

            

            [self removeWaitView];

        }];

    }

    - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{

        return self.knowFrames.count;

    }

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

        return 1;

    }

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

        

        //获得cell

        MinusAboutKnowCell *cell = [MinusAboutKnowCell cellWithTableView:tableView];

        

        // 给cell传递数据模型

        cell.knowFrame = self.knowFrames[indexPath.section];

        

        cell.backgroundColor = [UIColor whiteColor];

        

        return cell;

    }

    - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{

        

        MinusAboutKnowFrame *frame = self.knowFrames[indexPath.section];

        return frame.cellHeight;

        

    }

    //- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section

    //{

    //    return 15;

    //}

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

        

        MinusAboutKnowFrame *frame = self.knowFrames[indexPath.section];

        MinusAboutKnowModel *model = frame.Knowmodel;

        

        YCProblemDetailViewController *vc = [[YCProblemDetailViewController alloc] init];

        vc.questionid = model.questionid;

        [self.navigationController pushViewController:vc animated:YES];

    }

    - (NSArray *)knowFramesWithKnow:(NSArray *)know{

        // 将know数组转化为WBStatusFrame数组

        NSMutableArray *frames = [NSMutableArray array];

        for (MinusAboutKnowModel *knowmodel in know) {

            MinusAboutKnowFrame *f = [[MinusAboutKnowFrame alloc] init];

            f.Knowmodel = knowmodel;

            [frames addObject:f];

        }

        return [frames copy];

    }

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  • 原文地址:https://www.cnblogs.com/jiqiaochun/p/5121072.html
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