Question

我不得不点击已做的纽顿,以方案方式驳回模式调查。我想UIButton优于BarButtonItem,添加ControlEvents TouchupInside。

但有<条码>。我混淆了应该使用什么样的纽子。

   UIButton *button = [UIButton buttonWithType:UIButtonTypeInfoLight];

[button addTarget:self action:@selector(displayModalViewaction:) forControlEvents:UIControlEventTouchUpInside];    

  UIBarButtonItem * button = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone
                                                                          target:self
                                                                          action:@selector(dismissViewaction:)] autorelease];

Answer 1

您最有可能使用<代码>。 UIButtonTypeRoundedRect或



With the custom type, you can add images for display.

You can try "stealing" these images from the UIBarButtonItem (image property defined in UIBarItem) and making the custom button look like the UIBarButtonSystemItemDone button

UIBarButtonItem * buttonForImage = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:nil                                                                       action:nil] autorelease];

UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];

[button addTarget:self action:@selector(displayModalViewaction:) forControlEvents:UIControlEventTouchUpInside];

[button setImage:buttonForImage.image forState:UIControlStateNormal];

引人瞩目。在为UIButton树立形象时,该图不会根据contentMode对地国的大小加以扩大。如果你希望图像符合<代码>contentMode中的财产,则使用setBackgroundImage: for State:。

Answer 2

I think the type of button doesn t matter. You have to assign an action 或 a select或 to the button. Something like this:

UIBarButtonItem *bttItem = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@select或(yourBttAction:)] aut或elease];

行动:

- (IBAction) yourBttAction:(id)sender
{
    NSLog(@"Done Button clicked");

    //do something
}

If the button is on the modalViewController, I usualy, f或 dismiss it, I use:

[self dismissModalViewControllerAnimated:(BOOL)];

或

//if you have a navigationController
[self.navigationController dismissModalViewControllerAnimated:(BOOL)];

But if you want to use a delegate to dismiss it, take a look at this tut或ial

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