Question

我正在以编程方式创建一些barbutton项目，但是没有调用第一个按钮上的选择器。我现在在viewDidLoad中有以下代码：

[super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
   // self.navigationItem.leftBarButtonItem = self.editButtonItem;


    _defaultBarColor = self.navigationController.navigationBar.tintColor;
    [self loadPreferences];


    self.spinner = [[UIActivityIndicatorView alloc]  initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
    self.btnSpinner = [[UIBarButtonItem alloc] initWithCustomView:self.spinner];

    self.btnRefresh = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:@selector(refreshPressed:)];

    self.lblLastUpdate = [[UIBarButtonItem alloc] initWithTitle:@" " style:UIBarButtonItemStylePlain target:nil action:nil];
    [self.lblLastUpdate setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIFont boldSystemFontOfSize:13], UITextAttributeFont,nil] forState:UIControlStateNormal];

    self.flexibleSpace = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
        self.toolbarItems = [NSArray arrayWithObjects:self.btnRefresh,self.flexibleSpace,self.lblLastUpdate,self.flexibleSpace, nil];



    self.detailViewController = (DetailViewController *)[[self.splitViewController.viewControllers lastObject] topViewController];


    [self loadData];

到目前为止，我发现如果我将Label的选择器（工具栏中的第二项）设置为第一项的选择器，则调用第一项选择器。

有什么想法吗？

Answer 1

您分配了条形按钮但没有为条形按钮设置框架。

为barButton分配设置框架后。

btnSpinner.frame=CGRectMake(10,10,70,40);

UIBarButtonItem没有响应

1 个答案: