iOS搜索栏无法显示结果

*更新：这实际上有效，我的自定义单元格的样式没有遇到，所以单元格看起来是空白的。 那么如何让searchResultsTableView使用我的自定义单元格呢？

我在表格视图中实现了一个搜索栏。 在我调试时搜索，过滤所有工作，但是当我在搜索栏中输入字符时，结果不会加载或显示。 这就是我正在做的一切：

 @interface InviteTableViewController () @property(nonatomic, strong) NSNumber *contactsCount; @property(nonatomic, strong) InviteTableViewCell *selectedCell; @property(strong, nonatomic) NSMutableArray *filteredContactArray; @property (weak, nonatomic) IBOutlet UISearchBar *contactsSearchBar; @end @implementation InviteTableViewController - (id)initWithStyle:(UITableViewStyle)style { self = [super initWithStyle:style]; if (self) { // Custom initialization } return self; } - (void) extractAllContacts: (ABAddressBookRef) addressBookRef{ NSMutableArray *contactsArray = [NSMutableArray array]; CFArrayRef allPeople = ABAddressBookCopyArrayOfAllPeople(addressBookRef); CFIndex numberOfPeople = ABAddressBookGetPersonCount(addressBookRef); for(int i = 0; i < numberOfPeople; i++){ ABRecordRef person = CFArrayGetValueAtIndex( allPeople, i ); NSString *firstName = (__bridge NSString *)(ABRecordCopyValue(person, kABPersonFirstNameProperty)); if(firstName){ ABMultiValueRef emails = ABRecordCopyValue(person, kABPersonEmailProperty); for (CFIndex i = 0; i < ABMultiValueGetCount(emails); i++) { NSString *email = (__bridge_transfer NSString *) ABMultiValueCopyValueAtIndex(emails, i); MyUser *amUser = [[MyUser alloc] init]; amUser.email =email; NSString *fullName =[NSString stringWithFormat:@"%@ %@",firstName, (__bridge NSString *)(ABRecordCopyValue(person, kABPersonLastNameProperty))]; amUser.fullName = fullName; [contactsArray addObject:amUser]; } } } NSLog(@"================================count ============= %d", [contactsArray count]); contactsArray = [contactsArray sortedArrayUsingComparator:^NSComparisonResult(id a, id b) { NSDate *first = [(MyUser*) a fullName]; NSDate *second = [(MyUser*)b fullName]; return [first compare:second]; }]; self.inviteContactsArray = contactsArray; self.filteredContactArray = [NSMutableArray arrayWithCapacity:[contactsArray count]]; [self.tableView reloadData]; } - (void)viewDidLoad { [super viewDidLoad]; _contactsCount = [NSNumber numberWithInt:0]; ABAddressBookRef addressBookRef = ABAddressBookCreateWithOptions(NULL, NULL); if (ABAddressBookGetAuthorizationStatus() == kABAuthorizationStatusNotDetermined) { ABAddressBookRequestAccessWithCompletion(addressBookRef, ^(bool granted, CFErrorRef error) { if (granted) { [self extractAllContacts: addressBookRef]; [self.tableView reloadData]; } else { NSString *message = [NSString stringWithFormat:@"You have not given permission to use your address book. Please allow in settings "]; UIAlertView* alert = [[UIAlertView alloc] initWithTitle:@"Enable Contacts" message:message delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; } }); } else if (ABAddressBookGetAuthorizationStatus() == kABAuthorizationStatusAuthorized) { // The user has previously given access, add the contact [self extractAllContacts:addressBookRef]; } else { // The user has previously denied access // Send an alert telling user to change privacy setting in settings app } [self.tableView reloadData]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } #pragma mark - Table view data source - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { // Return the number of sections. return 1; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { if (tableView == self.searchDisplayController.searchResultsTableView) { return [self.filteredContactArray count]; } else { return [self.inviteContactsArray count]; } } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"InviteCell"; InviteTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if ( cell == nil ) { cell = [[InviteTableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier]; } MyUser *person = nil; if (tableView == self.searchDisplayController.searchResultsTableView) { person = [self.filteredContactArray objectAtIndex:[indexPath row]]; NSMutableArray *tempArray = self.filteredContactArray; } else { person = [self.inviteContactsArray objectAtIndex:[indexPath row]]; } //InviteTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; person = [self.inviteContactsArray objectAtIndex:indexPath.row]; cell.nameLabel.text = person.fullName; cell.emailLabel.text = person.email; return cell; } #pragma mark Content Filtering -(void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope { // Update the filtered array based on the search text and scope. // Remove all objects from the filtered search array [self.filteredContactArray removeAllObjects]; // Filter the array using NSPredicate NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF.fullName contains[c] %@",searchText]; self.filteredContactArray = [NSMutableArray arrayWithArray:[self.inviteContactsArray filteredArrayUsingPredicate:predicate]]; } #pragma mark - UISearchDisplayController Delegate Methods -(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString { [self filterContentForSearchText:searchString scope:[[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:[self.searchDisplayController.searchBar selectedScopeButtonIndex]]]; return YES; } @end 

这就是它的样子：

Answer 1

同意@rdelmar。

但是，如果您更改代码，TableView中会出现一种棘手的行为

 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { .... InviteTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; .... } 

至

 InviteTableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 

如果添加前缀“self”。 你的代码应该工作正常。

和

 if ( cell == nil ) { cell = [[InviteTableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier]; } 

是不必要的。 它只是为你创建一个标准的“字幕单元格”，看起来不是你想要的，只需将它们删除即可。

Answer 2

如果要对主表和搜索结果表使用相同的单元格，则应将单元格设置为xib（或者可以完全在代码中完成）。 在viewDidLoad中，为两个表视图注册nib，

 - (void)viewDidLoad { [super viewDidLoad]; [self.searchDisplayController.searchResultsTableView registerNib:[UINib nibWithNibName:@"InviteTableViewCell" bundle:nil] forCellReuseIdentifier:@"InviteCell"]; [self.tableView registerNib:[UINib nibWithNibName:@"InviteTableViewCell" bundle:nil] forCellReuseIdentifier:@"inviteCell"]; } 

在cellForRowAtIndexPath中，您可以执行以下操作，

 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { InviteTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"InviteCell" forIndexPath:indexPath]; MyUser *person = ([tableView isEqual:self.tableView])? self.inviteContactsArray[indexPath.row] : self.filteredContactArray[indexPath row]; cell.nameLabel.text = person.fullName; cell.emailLabel.text = person.email; return cell; } 

如果您已经在故事板中设置了单元格，则可以将其复制并粘贴到空的xib文件中，这样您就不必再重新设置它。 您可以从故事板表视图中删除单元格，因为您将从xib文件中获取单元格。

Answer 3

viewdidload下面的行应该可以解决问题

 self.searchDisplayController.searchResultsTableView.rowHeight = self.tableView.rowHeight