点击UIBarButtonItem时在iPhone中弹出一个弹出框

Question

我想在用户点击UIBarButtonItem时弹出一个弹出框。为了使iPhone上的弹出窗口工作，我搜索并找到了WEPopover

编辑：对不起，我的问题很混乱。我试图画出类似于iPad弹出窗口的东西，但在iPhone中。我问是否有替代方案，比如在其他视图上添加UIView或从iPhone SDK添加新组件。

谢谢。

Answer 1

目标添加到您的UIBarButtonItem

UIBarButtonItem *barButton = [[UIBarButtonItem alloc] initWithTitle:@"button!" style:UIBarButtonItemStyleBordered target:self action: @selector(showPopover:)]; 

，并在你的目标做这样的事情：

- (void)showPopover:(id)sender 
{ 

    popoverController = [[[WEPopoverController alloc] initWithContentViewController:contentViewController] autorelease]; 
    [popoverController presentPopoverFromRect:sender.frame 
              inView:self.view 
          permittedArrowDirections:UIPopoverArrowDirectionDown 
              animated:YES]; 
} 

这个代码是改编自提供WEPopover https://github.com/werner77/WEPopover/blob/master/Classes/WEPopoverViewController.m

Answer 2

取一个样本看看FPPopover

代码真的很简单，有很多自动化的东西

//the view controller you want to present as popover 
YourViewController *controller = [[YourViewController alloc] init]; 

//our popover 
FPPopoverController *popover = [[FPPopoverController alloc] initWithViewController:controller]; 

//the popover will be presented from the okButton view 
[popover presentPopoverFromView:okButton];