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Question

我为家创建了这样的按钮：

UIBarButtonItem * addButton=[[UIBarButtonItem alloc] initWithTitle:@"Home" style:UIBarButtonItemStyleBordered target:self action:@selector(GoToHome:)];
    [navItem setLeftBarButtonItem:addButton];

GoToHome函数只有一行，即：

[self.navigationController popToRootViewControllerAnimated:YES];

但是当我点击主页按钮时，它显示没有动作（不工作）

Answer 1

在GoToHome方法中尝试这个

 [self.parentViewController.parentViewController.parentViewController dismissModalViewControllerAnimated:YES];

Answer 2

您是否已将按钮代码与IB按钮相关联？这可能发生在很多人身上...... !!

Answer 3

试试这个，

UIBarButtonItem *addButton = [[UIBarButtonItem alloc]  initWithTitle:@"Home" style:UIBarButtonItemStylePlain target:self action:@selector(GotoTopScreen)];

self.navigationItem.rightBarButtonItem = addButton;

-(void)GotoTopScreen{
[self.navigationController popToRootViewControllerAnimated:YES];

}

Answer 4

创建导航控制器的最佳方法是在appDelegate中创建它并将其作为appDelegate.navigationController访问。那些零对象问题不会来。

Answer 5

使用此方法：

UIBarButtonItem *flipButtons = [[UIBarButtonItem alloc] initWithTitle:@"Back"   
            style:UIBarButtonItemStyleBordered  target:self 
            action:@selector(GotoTopScreen)];
            self.navigationItem.leftBarButtonItem = flipButtons;
[flipButtons release];


-(void)GotoTopScreen
{
     [self.navigationController popToRootViewControllerAnimated:YES];
}