当我在搜索中输入字母时，我会得到大约4秒的滞后，并且无法做任何事情。其他一切都很好。 UISearchDisplayController找到我想要的东西，segue效果很好。我不确定它是关于内存还是我的代码中的一些错误。谁能帮我？感谢
我的代码
TableViewController.m
@implementation TableViewController
@synthesize colorsTable;
@synthesize searchBar;
@synthesize searchController;
@synthesize searchResults;
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:@"showDetail"]) {
{
DetailViewController *sdvc = (DetailViewController *)[segue destinationViewController];
if(self.searchDisplayController.active) {
NSIndexPath *indexPath = [[self tableView] indexPathForSelectedRow];
PFObject *object = [self.objects objectAtIndex:indexPath.row];
object = (PFObject *)[[self searchResults]objectAtIndex:[[[[self searchDisplayController]searchResultsTableView]indexPathForSelectedRow]row]];
sdvc.detailItem = object;
} else {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
PFObject *object = [self.objects objectAtIndex:indexPath.row];
DetailViewController *detailViewController = [segue destinationViewController];
detailViewController.detailItem = object;
}
}
}
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self performSelector:@selector(runThisMethod) withObject:nil afterDelay:1.9f];
self.searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 44)];
self.tableView.tableHeaderView = self.searchBar;
self.searchController = [[UISearchDisplayController alloc] initWithSearchBar:self.searchBar contentsController:self];
self.searchController.searchResultsDataSource = self;
self.searchController.searchResultsDelegate = self;
self.searchController.delegate = self;
CGPoint offset = CGPointMake(0, self.searchBar.frame.size.height);
self.tableView.contentOffset = offset;
self.searchResults = [NSMutableArray array];
-(void)filterResults:(NSString *)searchTerm {
[self.searchResults removeAllObjects];
PFQuery *query = [PFQuery queryWithClassName: self.parseClassName];
[query whereKeyExists:@"MestoName"]; //this is based on whatever query you are trying to accomplish
[query whereKey:@"MestoName" containsString:searchTerm];
NSArray *results = [query findObjects];
NSLog(@"%@", results);
NSLog(@"%u", results.count);
[self.searchResults addObjectsFromArray:results];
}
- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {
[self filterResults:searchString];
return YES;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if (tableView == self.tableView) {
//if (tableView == self.searchDisplayController.searchResultsTableView) {
return self.objects.count;
} else {
return self.searchResults.count;
}
}
- (void)searchDisplayController:(UISearchDisplayController *)controller didLoadSearchResultsTableView:(UITableView *)tableView
{
tableView.rowHeight = 90.0f;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath object:(PFObject *)object {
static NSString *uniqueIdentifier = @"colorsCell";
CustomCell *cell = nil;
cell = (CustomCell *) [self.tableView dequeueReusableCellWithIdentifier:uniqueIdentifier];
[cell.imagevieww setImageWithURL:[NSURL URLWithString:[object objectForKey:@"ImageURL"]]
placeholderImage:[UIImage imageNamed:@"placeholder.png"]];
cell.cellTitle.text = [object objectForKey:@"MestoName"];
cell.cellDescript.text = [object objectForKey:@"MestoSubname"];
if (!cell) {
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"colorsCell" owner:nil options:nil];
for (id currentObject in topLevelObjects)
{
if([currentObject isKindOfClass:[CustomCell class]])
{
cell = (CustomCell *)currentObject;
break;
}
}
}
if (tableView == self.tableView) {
cell.cellTitle.text = [object objectForKey:@"MestoName"];
} else {
PFUser *obj2 = [self.searchResults objectAtIndex:indexPath.row];
PFQuery *query = [PFQuery queryWithClassName:@"Mesta"];
PFObject *searchedUser = [query getObjectWithId:obj2.objectId];
NSString *boottext = [searchedUser objectForKey:@"MestoName"];
cell.cellTitle.text = boottext;
NSString *bootsubtext = [searchedUser objectForKey:@"MestoSubname"];
cell.cellDescript.text = bootsubtext;
NSString *bootimage = [searchedUser objectForKey:@"ImageURL"];
[cell.imagevieww setImageWithURL:[NSURL URLWithString:bootimage]];
NSLog(@"Content: %@", boottext);
}
return cell;
}
@end
答案 0 :(得分：0)
对于每个人都有同样的问题。我已经有了解决方案。我重写了我的所有代码，它终于工作了。
这是代码
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath object:(PFObject *)object {
NSString *uniqueIdentifier = @"MainCell";
CustomCell3 *cell = nil;
cell = (CustomCell3 *) [self.tableView dequeueReusableCellWithIdentifier:uniqueIdentifier];
if (!cell) {
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"MainCell" owner:nil options:nil];
for (id currentObject in topLevelObjects)
{
if([currentObject isKindOfClass:[CustomCell3 class]])
{
cell = (CustomCell3 *)currentObject;
break;
}
}
}
if (tableView == self.tableView) {
cell.MainTitle.text = [object objectForKey:@"CountryTitle"];
cell.DescriptTitle.text = [object objectForKey:@"DescriptTitle"];
[cell.FlagTitle setImageWithURL:[NSURL URLWithString:[object objectForKey:@"ImaURL"]]
placeholderImage:[UIImage imageNamed:@"placeholder.png"]];
};
if(tableView == self.searchDisplayController.searchResultsTableView) {
PFObject *searchedUser = [self.searchResults objectAtIndex:indexPath.row];
NSString *content = [searchedUser objectForKey:@"CountryTitle"];
NSString *desco = [searchedUser objectForKey:@"DescriptTitle"];
cell.DescriptTitle.text = desco;
cell.MainTitle.text = content;
NSString *image = [searchedUser objectForKey:@"ImaURL"];
[cell.FlagTitle setImageWithURL:[NSURL URLWithString:image]
placeholderImage:[UIImage imageNamed:@"placeholder.png"]];
};
return cell;
}