Question

这里我在UIViewController的顶部有一个搜索栏，在搜索栏下面还有一个UITableView。当我不搜索内容时，tableView可以很好地显示内容，但是当我搜索时，searchResultTableView只能显示一些白色单元格，而不是正确的结果。

这是.h文件：

#import <UIKit/UIKit.h>

@interface MySearchViewController : UIViewController <UITableViewDelegate, UITableViewDataSource>

@property (weak, nonatomic) IBOutlet UITableView *myTableView;


- (void)reloadView;

@end

这是.m文件：

#import "MySearchViewController.h"
#import "MyEventInfo.h"
#import "MyEventTableViewCell.h"
#import "MyEventDetailViewController.h"

@interface MySearchViewController ()

@property NSUserDefaults *usrDefault;

@end

@implementation MySearchViewController {
    NSMutableArray *events;
    NSArray *searchResults;
}

- (void)viewDidLoad {
    [super viewDidLoad];

    self.usrDefault = [NSUserDefaults standardUserDefaults];
    events = [[NSMutableArray alloc] init];
    [self extractEventArrayData];

}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:YES];
    [self reloadView];
}

- (void)reloadView {
    NSLog(@"reloadView");
    events = [[NSMutableArray alloc] init];
    [self extractEventArrayData];
    [self.myTableView reloadData];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)extractEventArrayData {
    NSArray *dataArray = [[NSArray alloc] initWithArray:[self.usrDefault objectForKey:@"eventDataArray"]];

    for (NSData *dataObject in dataArray) {
        MyEventInfo *eventDecodedObject = [NSKeyedUnarchiver unarchiveObjectWithData:dataObject];
        [events addObject:eventDecodedObject];
    }
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    if (tableView == self.myTableView) {
        return [events count];
    } else {
        NSLog(@"searchResults count:%lu",(unsigned long)[searchResults count]);
        return [searchResults count];
    }
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return 360;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"CustomTableCell";
    MyEventTableViewCell *cell = (MyEventTableViewCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    // Configure the cell...
    if (cell == nil) {
        cell = [[MyEventTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
    }

    // Display MyEventTableViewCell in the table cell
    MyEventInfo *event = nil;
    if (tableView == self.myTableView) {
        event = [events objectAtIndex:indexPath.row];
    } else {
        event = [searchResults objectAtIndex:indexPath.row];
        NSLog(@"name of event:%@", event.nameOfEvent);
    }

    cell.nameOfEvent.text = event.nameOfEvent;
    cell.imageOfEvent.image = [UIImage imageNamed:event.imageOfEvent];
    cell.timeOfEvent.text = event.timeOfEvent;
    cell.locationOfEvent.text = event.locationOfEvent;
    cell.dateOfEvent.text = event.dateOfEvent;

    return cell;
}

- (void)filterContentForSearchText:(NSString*)searchText
{
    NSPredicate *resultPredicate = [NSPredicate predicateWithFormat:@"nameOfEvent contains[c] %@", searchText];
    searchResults = [events filteredArrayUsingPredicate:resultPredicate];
}

-(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{
    [self filterContentForSearchText:searchString];
    return YES;
}

@end

在故事板上，我已经将tableView的委托和数据源设置为自己。这让我发疯，我无法弄清楚是什么错。有人可以帮帮我吗？感谢。

when searching, cell's objects were all null, and had nothing in itself

when not searching, the cell is well with objects that had content the same as event

我的SearchDisplayController与UIViewController中的UITableView不兼容

0 个答案: