这一直有效，直到最近更新了tvOS。任何想法发生了什么？应用程序中仍然存在搜索栏，只是直接跳到了表格视图。
首次发布该应用程序时，一切正常，但在某些时候，它只是退出了工作。我在控制台中没有任何错误，一切都说它已分配并初始化。
-(void)viewDidLoad {
[super viewDidLoad];
_resultsTableController = [[APLResultsTableController alloc] init];
_searchController = [[UISearchController alloc] initWithSearchResultsController:self.resultsTableController];
self.searchController.searchResultsUpdater = self;
[self.searchController.searchBar sizeToFit];
self.tableView.tableHeaderView = self.searchController.searchBar;
self.resultsTableController.tableView.delegate = self;
self.searchController.delegate = self;
self.searchController.searchBar.delegate = self; // so we can monitor text changes + others
self.definesPresentationContext = YES; // know where you want UISearchController to be displayed
}
- (void)viewWillAppear:(BOOL)animated {
if (self.searchControllerWasActive) {
self.searchController.active = self.searchControllerWasActive;
_searchControllerWasActive = NO;
if (self.searchControllerSearchFieldWasFirstResponder) {
[self.searchController.searchBar becomeFirstResponder];
_searchControllerSearchFieldWasFirstResponder = NO;
}
}
NSBundle *bundle = [NSBundle mainBundle];
self.files = [bundle pathsForResourcesOfType:@"pdf" inDirectory:@"AIMPDF"];
NSString *documentsDirectoryPath = [self.files objectAtIndex:thepath.row];
self.title = @"Devo Songs";
self.filenames = [[documentsDirectoryPath lastPathComponent] stringByDeletingPathExtension];
NSLog(@"%@", filenames);
NSMutableArray *names = [NSMutableArray arrayWithCapacity:[self.files count]];
for (NSString *path in self.files) {
[names addObject:[[path lastPathComponent] stringByDeletingPathExtension]];
}
self.files = names;
self.files = [names sortedArrayUsingSelector:@selector(localizedCaseInsensitiveCompare:)];
self.tableView.backgroundColor = [UIColor whiteColor];
self.parentViewController.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"iphonebackground.png"]];
[super viewDidLoad];
[super viewWillAppear:animated];
}
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {
[searchBar resignFirstResponder];
}
- (void)updateSearchResultsForSearchController:(UISearchController *)searchController {
// update the filtered array based on the search text
NSString *searchText = searchController.searchBar.text;
NSMutableArray *searchResults2 = [self.files mutableCopy];
// strip out all the leading and trailing spaces
NSString *strippedString = [searchText stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
// break up the search terms (separated by spaces)
NSArray *searchItems = nil;
if (strippedString.length > 0) {
searchItems = [strippedString componentsSeparatedByString:@" "];
}
// build all the "AND" expressions for each value in the searchString
//
NSMutableArray *andMatchPredicates = [NSMutableArray array];
for (NSString *searchString in searchItems) {
// each searchString creates an OR predicate for: name, yearIntroduced, introPrice
//
// example if searchItems contains "iphone 599 2007":
// name CONTAINS[c] "iphone"
// name CONTAINS[c] "599", yearIntroduced ==[c] 599, introPrice ==[c] 599
// name CONTAINS[c] "2007", yearIntroduced ==[c] 2007, introPrice ==[c] 2007
//
NSPredicate *sPredicate =
[NSPredicate predicateWithFormat:@"SELF contains[c] %@", searchString];
[searchResults2 filterUsingPredicate:sPredicate];
// at this OR predicate to our master AND predicate
// NSCompoundPredicate *orMatchPredicates = [NSCompoundPredicate orPredicateWithSubpredicates:searchItemsPredicate];
//[andMatchPredicates addObject:orMatchPredicates];
}
// match up the fields of the Product object
// NSCompoundPredicate *finalCompoundPredicate =
//[NSCompoundPredicate andPredicateWithSubpredicates:andMatchPredicates];
//searchResults2 = [[searchResults filteredArrayUsingPredicate:finalCompoundPredicate] mutableCopy];
// hand over the filtered results to our search results table
APLResultsTableController *tableController = (APLResultsTableController *)self.searchController.searchResultsController;
tableController.filteredProducts = searchResults2;
[tableController.tableView reloadData];
}
- (void)handleSearchForTerm:(NSString *)searchTerm
{
[self setSavedSearchTerm:searchTerm];
if ([self searchResults] == nil)
{
NSMutableArray *array = [[NSMutableArray alloc] init];
[self setSearchResults:array];
array = nil;
}
[[self searchResults] removeAllObjects];
if ([[self savedSearchTerm] length] != 0)
{
for (NSString *currentString in [self files])
{
if ([currentString rangeOfString:searchTerm options:NSCaseInsensitiveSearch].location != NSNotFound)
{
[[self searchResults] addObject:currentString];
}
}
}
}- (void)viewDidUnload
{
[super viewDidUnload];
// Save the state of the search UI so that it can be restored if the view is re-created.
[self setSavedSearchTerm:[[[self searchDisplayController] searchBar] text]];
[self setSearchResults:nil];
}
/*
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
}
*/
/*
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
}
*/
/*
- (void)viewDidDisappear:(BOOL)animated {
[super viewDidDisappear:animated];
}
*/
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 30200
if( UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad )
{
// The device is an iPad running iPhone 3.2 or later.
return YES;
}
else
{
// The device is an iPhone or iPod touch.
return YES;
}
#else
// iPhone simulator
return YES;
#endif
}
/*- (BOOL)searchDisplayController:(UISearchDisplayController *)controller
shouldReloadTableForSearchString:(NSString *)searchString
{
[self handleSearchForTerm:searchString];
return YES;
}
- (void)searchDisplayControllerWillEndSearch:(UISearchDisplayController *)controller
{
[self setSavedSearchTerm:nil];
[[self tableView] reloadData];
}*/
#pragma mark -
#pragma mark Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
// Return the number of rows in the section.
NSInteger rows;
rows = [[self files] count];
return rows;
}
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *filename = [[[self.files objectAtIndex:indexPath.row] lastPathComponent] stringByDeletingPathExtension];
NSInteger row = [indexPath row];
NSString *contentForThisRow = nil;
contentForThisRow = filename;
static NSString *CellIdentifier = @"CellIdentifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
[[cell textLabel] setText:contentForThisRow];
cell.textLabel.font = [UIFont fontWithName:@"Helvetica Neue" size:90];
cell.textLabel.textColor = [UIColor blackColor];
cell.backgroundColor = [UIColor lightGrayColor];
return cell;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if( UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad ) {
return 80;
}
else {
return 120;
}
}
- (void)tableView:(UITableView *)tableView didUpdateFocusInContext:(UITableViewFocusUpdateContext *)context withAnimationCoordinator:(UIFocusAnimationCoordinator *)coordinator
{
//this gives you the indexpath of the focused cell
NSIndexPath *nextIndexPath = [context nextFocusedIndexPath];
NSLog(@"Do Something");
}
/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
// Return NO if you do not want the specified item to be editable.
return YES;
}
*/
/*
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
// Delete the row from the data source.
NSString *selectedHtml = [self.files objectAtIndex:indexPath.row];
NSFileManager *fileManager = [NSFileManager defaultManager];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
[fileManager removeItemAtPath:[documentsDirectory stringByAppendingPathComponent:selectedHtml] error:NULL];
[self.files removeObjectAtIndex:indexPath.row];
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
else if (editingStyle == UITableViewCellEditingStyleInsert) {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view.
}
}
*/
/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath {
}
*/
/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath {
// Return NO if you do not want the item to be re-orderable.
return YES;
}
*/
#pragma mark -
#pragma mark Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
self.selectedCountry = (tableView == self.tableView) ?
self.files[indexPath.row] : self.resultsTableController.filteredProducts[indexPath.row];
[self performSegueWithIdentifier:@"ShowSong" sender:self];
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
// Make sure your segue name in storyboard is the same as this line
if ([[segue identifier] isEqualToString:@"ShowSong"])
{
NSLog(@"Selecting %@", self.selectedCountry);
FirstViewController* userViewController = [segue destinationViewController];
userViewController.selectedCountry = self.selectedCountry;
//if you need to pass data to the next controller do it here
}
}