ios - 更改未分段控件时不会加载 Tableview 数据

Question

//tableview没有变化。我已经在这几天了。看起来很简单。谢谢你的帮助

#import "StopsTableViewController.h"

static NSString *MyIdentifier = @"RouteListing";

@interface StopsTableViewController ()

@property (strong, nonatomic) NSArray *TESTARRAY;

@end


@implementation StopsTableViewController

- (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    
    if (self) {
        //Set the tab bar item's title
        self.title = @"Stops";
        
    }        
    
    self.stopList = [[API sharedAPI] fetchStopListing];
    
    self.TESTARRAY = @[@"Josh", @"Kyle", @"Nate"];

    return self;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    
    [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:MyIdentifier];
    
    // Adds Segmented Control
    [self segmentedView];    

}

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

- (void) segmentedView {
    NSArray *segmentedMenu = [NSArray arrayWithObjects:@"All", @"Near Me", nil];
    UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:segmentedMenu];
    [segmentedControl addTarget:self
                         action:@selector(valueChanged:)
               forControlEvents:UIControlEventValueChanged];
    
    segmentedControl.selectedSegmentIndex = 0;
    self.navigationItem.titleView = segmentedControl;
    
}

pragma mark - TableView 数据源

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    // Return the number of sections.
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    if ([self.segmentedControl selectedSegmentIndex] == 0) {
        return  [self.stopList count];
        
    }
    else {
        return [self.TESTARRAY count];
        
    }
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    
    UITableViewCell *cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:MyIdentifier];
    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;

    if (_segmentedControl.selectedSegmentIndex == 0) {
        
            cell.textLabel.text = [[self.stopList objectAtIndex:indexPath.row] objectForKey:@"stoptitle"];
            cell.detailTextLabel.text = [NSString stringWithFormat:@"Stop %@", [[self.stopList objectAtIndex:indexPath.row] objectForKey:@"stopnumber"]];
    }
    
    else {
        cell.textLabel.text = self.TESTARRAY[indexPath.row];
        
    }
    
    return cell;
}

pragma mark - TableView 委托(delegate)

// In a xib-based application, navigation from a table can be handled in -tableView:didSelectRowAtIndexPath:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    // Navigation logic may go here, for example:
    // Create the next view controller.
    StopInfoViewController *detailViewController = [[StopInfoViewController alloc] initWithNibName:@"StopInfoViewController" bundle:nil];
    
    // Pass the selected object to the new view controller.
    
    detailViewController.stopInfo = [[self.stopList objectAtIndex:indexPath.row] objectForKey:@"stopnumber"];
    
    detailViewController.stopName = [[self.stopList objectAtIndex:indexPath.row] objectForKey:@"stoptitle"];
    
    
    // Push the view controller.
    [self.navigationController pushViewController:detailViewController animated:YES];
}


//Function for segmentedView
-(void) valueChanged:(UISegmentedControl *)sender {
     
    [self.tableView reloadData];
    NSLog(@"I'm getting called segment number is: %ld", (long)sender.selectedSegmentIndex);
    
}

@end

Answer 1

在调用表重新加载方法之前检查您的数据源数组，并确保该数组包含与您选择的段对应的新值。