ios - 当searchBar文本大于0时删除单元格

我创建了一个tableView，我首先将其设置为如果searchController处于 Activity 状态，则应使用过滤后的数组。但是，当searchBar包含超过0个字符时，我想先执行此操作。但是，这似乎不起作用。这是我到目前为止在cellForRowAtIndexPath中所做的

    if (count(self.teamSearchController.searchBar.text) > 0) {
        team = filteredTableData[indexPath.row] as Team
        cell.textLabel?.text = team.name as String

    } else {
        team = self.teamArray[indexPath.row] as Team
        cell.textLabel?.font = UIFont(name: "HelveticaNeue-Light", size: 20)
        cell.textLabel?.text = team.name as String

    }

updateSearchResultsForSearchController

func updateSearchResultsForSearchController(searchController: UISearchController)
{



    filteredTableData.removeAll(keepCapacity: false)

    let searchPredicate = NSPredicate(format: "name CONTAINS[c] %@ OR shortname CONTAINS[c] %@", searchController.searchBar.text, searchController.searchBar.text)
    let array = (teamArray as NSArray).filteredArrayUsingPredicate(searchPredicate) as! [Team]
    filteredTableData = array

    self.tableView.reloadData()
}

最佳答案

您应该检查updateSearchResultsForSearchController中搜索文本的长度

func updateSearchResultsForSearchController(searchController: UISearchController)
{

    if searchController.searchBar.text == "" {
        filteredTableData = self.teamArray
    } else {
        filteredTableData.removeAll(keepCapacity: false)

        let searchPredicate = NSPredicate(format: "name CONTAINS[c] %@ OR shortname CONTAINS[c] %@", searchController.searchBar.text, searchController.searchBar.text)

        let array = (teamArray as NSArray).filteredArrayUsingPredicate(searchPredicate) as! [Team]
        filteredTableData = array
    }
    self.tableView.reloadData()
}

如下所示更新cellForRowAtIndexPath中的代码，只需检查searchController是否处于 Activity 状态

if (self.teamSearchController.active) {
    team = filteredTableData[indexPath.row] as Team

} else {
    team = self.teamArray[indexPath.row] as Team
    cell.textLabel?.font = UIFont(name: "HelveticaNeue-Light", size: 20)
}
cell.textLabel?.text = team.name as String