我有一个为iOS 7编写的应用程序我需要更新，因为UISearchDisplayController已弃用于UISearchController。
我已经完成了几个教程并尝试了但是我无法让它工作，但是我很接近。
我正在关注此pattern。
我遇到的问题是我跟随的模式将子文件中的数据加载到NSDict对象中，但我的数据在数组中。没问题，我只是修改了搜索以使用谓词（我现在硬编码了一些东西，得到名字中带有E的所有记录）。
但是我收到以下错误：
2017-09-12 13：01：41.538 Scoular [7644：1963822] - [employee isEqualToString：]：无法识别的选择器发送到实例0x608000105580 2017-09-12 13：01：41.604 Scoular [7644：1963822] ***由于未捕获的异常终止应用程序＆＃39; NSInvalidArgumentException＆＃39;，原因：＆＃39; - [employee isEqualToString：]：无法识别的选择器已发送例如0x608000105580＆＃39;
在SearchResultsTableViewController.m文件中，在
行 cell.textLabel.text = self.searchResults[indexPath.row];
来自下面的m文件。我很难过。任何帮助将不胜感激。
#import "SearchResultsTableViewController.h"
@interface SearchResultsTableViewController ()
@property (nonatomic, strong) NSArray *array;
@end
@implementation SearchResultsTableViewController
#pragma mark - Table view data source
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [self.searchResults count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"SearchResultCell" forIndexPath:indexPath];
cell.textLabel.text = self.searchResults[indexPath.row];
return cell;
}
@end
标头文件
@import UIKit;
@class EmployeeDetailViewController;
#import <CoreData/CoreData.h>
#import "EmployeeDatabase.h"
@interface EmployeeListViewController : UITableViewController
@end
实施档案
#import "EmployeeListViewController.h"
#import "EmployeeDetailViewController.h"
#import "SearchResultsTableViewController.h"
@interface EmployeeListViewController () <UISearchResultsUpdating>
@property (nonatomic, strong) NSMutableArray *employees;
@property (nonatomic, strong) UISearchController *searchController;
@property (nonatomic, strong) NSMutableArray *searchResults;
@property (nonatomic,retain) NSMutableDictionary *sections;
@end
@implementation EmployeeListViewController
BOOL isSearching;
//Do I still need this
- (void)awakeFromNib {
if ([[UIDevice currentDevice] userInterfaceIdiom] ==
UIUserInterfaceIdiomPad) {
self.clearsSelectionOnViewWillAppear = NO;
self.preferredContentSize = CGSizeMake(320.0, 600.0);
}
[super awakeFromNib];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
- (void)viewDidLoad {
[super viewDidLoad];
// Get array of employees and sections
self.employees = [EmployeeDatabase getEmployees];
self.sections = [EmployeeDatabase getSections:_employees];
// There's no transition in our storyboard to our search results tableview or navigation controller
// so we'll have to grab it using the instantiateViewControllerWithIdentifier: method
UINavigationController *searchResultsController = [[self storyboard] instantiateViewControllerWithIdentifier:@"TableSearchResultsNavController"];
// Our instance of UISearchController will use searchResults
self.searchController = [[UISearchController alloc] initWithSearchResultsController:searchResultsController];
// The searchcontroller's searchResultsUpdater property will contain our tableView.
self.searchController.searchResultsUpdater = self;
// The searchBar contained in XCode's storyboard is a leftover from UISearchDisplayController.
// Don't use this. Instead, we'll create the searchBar programatically.
self.searchController.searchBar.frame = CGRectMake(self.searchController.searchBar.frame.origin.x,
self.searchController.searchBar.frame.origin.y,
self.searchController.searchBar.frame.size.width, 44.0);
self.tableView.tableHeaderView = self.searchController.searchBar;
// Set the back bar button
UIBarButtonItem *backButton =
[[UIBarButtonItem alloc] initWithTitle:@"Employees"
style:UIBarButtonItemStylePlain
target:nil
action:nil];
self.navigationItem.backBarButtonItem = backButton;
}
#pragma mark - Table Sections
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
NSInteger tmpCount;
if (isSearching) {
tmpCount = 1;
} else {
tmpCount = [[self.sections allKeys] count];
}
return tmpCount;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [self.employees count];
}
#pragma mark - Table View
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell =
[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [self.tableView dequeueReusableCellWithIdentifier:CellIdentifier];
}
employee *thisEmployee =
[[self.sections
valueForKey:[[[self.sections allKeys]
sortedArrayUsingSelector:
@selector(localizedCaseInsensitiveCompare:)]
objectAtIndex:indexPath.section]]
objectAtIndex:indexPath.row];
cell.textLabel.text = thisEmployee.fulNme;
return cell;
}
- (NSString *)tableView:(UITableView *)tableView
titleForHeaderInSection:(NSInteger)section {
NSString *tmpString;
//if (tableView == self.searchDisplayController.searchResultsTableView) {
//tmpString = nil;
//} else {
tmpString =
[[[self.sections allKeys]
sortedArrayUsingSelector:@selector(localizedCaseInsensitiveCompare:
)] objectAtIndex:section];
//}
return tmpString;
}
#pragma mark - Right side bar alphabetical index
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
NSArray *tmpTitle;
if (isSearching) {
tmpTitle = nil;
} else {
tmpTitle = [[self.sections allKeys]
sortedArrayUsingSelector:@selector(localizedCaseInsensitiveCompare:)];
}
return tmpTitle;
}
#pragma mark - UISearchControllerDelegate & UISearchResultsDelegate
// Called when the search bar becomes first responder
- (void)updateSearchResultsForSearchController:(UISearchController *)searchController
{
// Set searchString equal to what's typed into the searchbar
NSString *searchString = self.searchController.searchBar.text;
[self updateFilteredContentForAirlineName:searchString];
// If searchResultsController
if (self.searchController.searchResultsController) {
UINavigationController *navController = (UINavigationController *)self.searchController.searchResultsController;
// Present SearchResultsTableViewController as the topViewController
SearchResultsTableViewController *vc = (SearchResultsTableViewController *)navController.topViewController;
// Update searchResults
vc.searchResults = self.searchResults;
// And reload the tableView with the new data
[vc.tableView reloadData];
}
}
// Update self.searchResults based on searchString, which is the argument in passed to this method
- (void)updateFilteredContentForAirlineName:(NSString *)employeeName
{
if (employeeName == nil) {
// If empty the search results are the same as the original data
self.searchResults = [self.employees mutableCopy];
} else {
NSArray *searchResults2 = [[NSMutableArray alloc] init];
NSPredicate *predicate = [NSPredicate predicateWithFormat:@"fulNme contains 'E'"];
searchResults2 = [self.employees filteredArrayUsingPredicate:predicate];
self.searchResults = [searchResults2 mutableCopy];
}
}
@end
答案 0 :(得分：1)
在updateFilteredContentForAirlineName函数中，您正在从self.employees数组中搜索可能包含employee自定义类对象的数组。因此，您的self.searchResults数组也包含相同的类对象。
但是，在您cellForRowAtIndexPath SearchResultsTableViewController cell.textLabel.text = self.searchResults[indexPath.row];中，employee表示您在cell.textLabel中将- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"SearchResultCell" forIndexPath:indexPath];
employee *thisEmployee = self.searchResults[indexPath.row];
cell.textLabel.text = thisEmployee.fulNme;
return cell;
}
对象添加为字符串，导致您的应用崩溃。相反，你可以试试这个：
using (var client = new ScpClient(Config.UnixServer, Config.UnixUsername, Config.UnixPassword))
{
client.Connect();
client.Upload(new FileInfo(fileUpload), fileName);
client.Disconnect();
}