Question

您好我在导航栏上显示分段按钮时遇到问题我尝试这个代码它不起作用我有Tab Bar为了调用这个tabBar我使用此代码TabBar工作正常，但导航栏上的Button未显示

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    UITabBarController *tabcontroller = [[UITabBarController alloc] init];

    UITabBarController *vc1 = [[TMapViewController alloc] init];
    UITabBarController *vc2 = [[TShareController alloc]init];
    UITabBarController *vc3 = [[TSpeedometerController alloc]init];
    UITabBarController *vc4 = [[TReviewsController alloc]init];
    NSArray *viewControllers = [NSArray arrayWithObjects:vc1,vc2,vc3,vc4,nil];



    [tabcontroller setViewControllers:viewControllers];

    [vc1 release];
    [vc2 release];
    [vc3 release];
    [vc4 release];

    [self.navigationController pushViewController: tabcontroller animated: YES];
}

将此代码放入TMapViewController.m进行调用导航栏上的按钮

-(id)init 
{
    UITabBarItem *tbi = [self tabBarItem];
    [tbi setTitle:@"Map"];
    UIImage *i = [UIImage imageNamed:@"mapper_f.png"];
    [tbi setImage:i];


    UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:
                                            [NSArray arrayWithObjects:
                                             [UIImage imageNamed:@"Activitieslist.png"],

                                             nil]];
    [segmentedControl addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];
    segmentedControl.frame = CGRectMake(0, 0, 50, 35);
    segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;
    segmentedControl.momentary = YES;

    UIBarButtonItem *segmentBarItem = [[UIBarButtonItem alloc] initWithCustomView:segmentedControl];
    [segmentedControl release];

    self.navigationItem.rightBarButtonItem = segmentBarItem;
    [segmentBarItem release];

    return self;
}

我用的是同样的东西 - （void）viewDidLoad { [super viewDidLoad];

UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:
                                        [NSArray arrayWithObjects:
                                         [UIImage imageNamed:@"Activitieslist.png"],

                                         nil]];
[segmentedControl addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];
segmentedControl.frame = CGRectMake(0, 0, 50, 35);
segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;
segmentedControl.momentary = YES;

UIBarButtonItem *segmentBarItem = [[UIBarButtonItem alloc] initWithCustomView:segmentedControl];
[segmentedControl release];

self.navigationItem.rightBarButtonItem = segmentBarItem;
[segmentBarItem release];
[[self.navigationBar topItem] setTitleView:segmentedControl]; 
[[[self.navigationBar topItem] titleView] setUserInteractionEnabled:YES]; 



TLocationManager *manager = [[TLocationManager alloc] init];
self.locationManager = manager;
self.locationManager.delegate = self;
[manager release];

TMapRoutes *routes = [[TMapRoutes alloc] init];
self.mapRoutes = routes;
self.mapRoutes.mapView = self.myMapView;
[routes release];

self.myMapView.delegate = self;

/* Run the simulator */
[locationManager startUpdatingLocation];

} 即使它不起作用也会给我同样的错误。提前致谢哈里什

Answer 1

将其设为[self.navigationBar titleView:segmentedControl]

-(void)loadView { 
 UITabBarItem *tbi = [self tabBarItem];
    [tbi setTitle:@"Map"];
    UIImage *i = [UIImage imageNamed:@"mapper_f.png"];
    [tbi setImage:i];

UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:
                                        [NSArray arrayWithObjects:
                                         [UIImage imageNamed:@"Activitieslist.png"],

                                         nil]];
[segmentedControl addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];
segmentedControl.frame = CGRectMake(0, 0, 50, 35);
segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;
segmentedControl.momentary = YES;

UIBarButtonItem *segmentBarItem = [[UIBarButtonItem alloc] initWithCustomView:segmentedControl];
[segmentedControl release];

[[self.navigationBar topItem] setTitleView:segmentedControl]; [[[self.navigationBAr topItem] titleView] setUserInteractionEnabled:YES];
[segmentBarItem release];

iPhone按钮未显示在iPhone的导航栏上

1 个答案: