Question

我想要完成的事情非常简单。我以编程方式将三个UIBarButtonItem添加到导航栏。然后我希望UIBarButtonItems以编程方式触发segues，我只想让segue执行。到目前为止，我的代码失败了，我已经花了6个半小时，而且我仍然不确定我在代码中缺少什么。

这是我的VC .h

@interface RGStemsViewController : UIViewController

@property (nonatomic, readonly) UIStoryboardSegue *stemsToAddGroup;

- (void)addGroupItemInvoked:(id)sender;


@end

和我的VC .m

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.

    self.navigationController.navigationBar.tintColor = [UIColor whiteColor];

    self.navigationController.navigationBar.titleTextAttributes = [NSDictionary dictionaryWithObject:[UIColor whiteColor] forKey:NSForegroundColorAttributeName];


    UIBarButtonItem *addGroupItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(addGroupItemInvoked:)];

    UIBarButtonItem *searchItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSearch target:self action:nil];
    UIBarButtonItem *optionsItem = [[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"optionsIconAlternative.png"] style:UIBarButtonItemStyleBordered target:self action:nil];

    NSArray *actionButtonItems = @[optionsItem, searchItem];
    NSArray *groupButtonItem = @[addGroupItem];
    self.navigationItem.rightBarButtonItems = actionButtonItems;
    self.navigationItem.leftBarButtonItems = groupButtonItem;

    self.navigationController.navigationBar.barTintColor = [UIColor colorWithRed:153/256.0 green:204/256.0 blue:51/256.0 alpha:1.0];
}

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

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{

}

- (void)addGroupItemInvoked:(UIBarButtonItem *)sender
{
    [self performSeguewithIdentifier:@"stemsToAddGroup" sender:sender];
}

我通过右键单击视图控制器底栏上的视图控制器来连接segue，然后右键单击到目标视图，我想我需要使用prepareSegueWithIdentifier方法

显然我没有在我的@interface中声明选择器，或者至少那是我的错误所说的，这里似乎是什么问题？

完整的.m

@implementation RGStemsViewController

@synthesize stemsToAddGroup;

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.

    self.navigationController.navigationBar.tintColor = [UIColor whiteColor];

    self.navigationController.navigationBar.titleTextAttributes = [NSDictionary dictionaryWithObject:[UIColor whiteColor] forKey:NSForegroundColorAttributeName];


    UIBarButtonItem *addGroupItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(addGroupItemInvoked:)];

    UIBarButtonItem *searchItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSearch target:self action:nil];
    UIBarButtonItem *optionsItem = [[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"optionsIconAlternative.png"] style:UIBarButtonItemStyleBordered target:self action:nil];

    NSArray *actionButtonItems = @[optionsItem, searchItem];
    NSArray *groupButtonItem = @[addGroupItem];
    self.navigationItem.rightBarButtonItems = actionButtonItems;
    self.navigationItem.leftBarButtonItems = groupButtonItem;

    self.navigationController.navigationBar.barTintColor = [UIColor colorWithRed:153/256.0 green:204/256.0 blue:51/256.0 alpha:1.0];
}

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

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{

}

- (void)addGroupItemInvoked:(UIBarButtonItem *)sender
{
    [self performSeguewithIdentifier:@"stemsToAddGroup" sender:self];
}


@end

Answer 1

也许您需要为searchItem和optionsItem？

设置操作

使用performSegueWithIdentifier和selector方法

1 个答案: