最近在项目开发中用到了搜索框，之前都是用的系统的searchbar，现有项目中用的是EVNCustomSearchBar，我试了一下还挺方便，下面说一下具体的用法。

第一步：引入添加相关的委托代理EVNCustomSearchBarDelegate，懒加载初始化对象

if (!_searchBar) {

    _searchBar = [[EVNCustomSearchBar alloc] initWithFrame:CGRectMake(16, 0, K_CC_SCREEN_WIDTH-32, 44)];

    _searchBar.backgroundColor = K_CC_COLOR_STRING(@"#F5F5F5");

    _searchBar.textColor = K_CC_COLOR_STRING(@"#999999");

    _searchBar.textFieldColor = [UIColor clearColor];

    _searchBar.iconImage = K_CC_IMAGE(@"newhome_search");

    _searchBar.iconAlign = EVNCustomSearchBarIconAlignCenter;

    [_searchBar setPlaceholder:K_CC_LOCAL_STR(@"home.search")];// 搜索框的占位符

    _searchBar.placeholderColor = K_CC_COLOR_STRING(@"#999999");

    _searchBar.delegate = self; //设置代理

    _searchBar.isHiddenCancelButton = YES;

    _searchBar.tintColor = K_CC_COLOR_STRING(@"#999999");

    [_searchBar sizeToFit];

    

}

return _searchBar;

第二步：添加到相应的view上

UIView *headerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, K_CC_SCREEN_WIDTH, 44)];

headerView.backgroundColor = [UIColor clearColor];

[headerView addSubview:self.searchBar];

self.distributeTable.tableHeaderView = headerView;

第三步：添加相关的搜索代理逻辑处理

pragma mark - EVNCustomSearchBarDelegate -

• (void)searchBar:(EVNCustomSearchBar *)searchBar textDidChange:(NSString *)searchText {

  if (searchText.length > 0) {

    // 根据模型属性搜索结果
  
    self.searchList=[NSMutableArray arrayWithArray:[[NDSearchTool tool] searchWithFieldArray:@[@"username"] inputString:searchText inArray:self.dataAddressList]];
  
    self.isSearch = YES;
  

  }else{

    self.isSearch = NO;
  
    self.currentSeasSearchItem=-1;
  
    //清空搜索内容Id
  
    [self.searchList removeAllObjects];
  

  }

  [self.distributeTable reloadData];

}

• (NSArray *)searchWithFieldArray:(NSArray *)fieldArray

                  inputString:(NSString *)inputString
  
                      inArray:(NSArray *)array
  

{

if (![array count] || ![fieldArray count])

{

    return nil;

}



NSPredicate *scopePredicate;

NSMutableArray *backArray = [NSMutableArray array];



for (NSString *fieldString in fieldArray)

{

    NSArray *tempArray;

    scopePredicate = [NSPredicate predicateWithFormat:@"SELF.%@ contains[c] %@", fieldString, inputString];

    tempArray = [array filteredArrayUsingPredicate:scopePredicate];

    

    for (NSObject *object in tempArray)

    {

        if (![backArray containsObject:object])

        {

            [backArray nd_addObj:object];

        }

    }

}



return backArray;

}

完成这些就可以实现动态的模糊搜索，大功告成。