iphone - iOS:自定义图像 UIBarButtonItem 不响应触摸

Question

我正在尝试将图像用作导航栏中的按钮。这些按钮显示得很好，但它们不响应触摸事件。以下是我设置按钮的方式:

UIImageView *iv = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"arrow_up_24.png"]];

iv.userInteractionEnabled=YES;
UIBarButtonItem * logoutButton = [[UIBarButtonItem alloc] initWithCustomView:iv ];

logoutButton.target=self;
logoutButton.action=@selector(logoutButtonPressed);

我错过了什么？

Answer 1

如果我没记错的话，我在过去的一个项目中遇到过这个问题。我认为这是 UIBarButtonItem 的问题。解决方法是...

UIButton *imageButton = [UIButton buttonWithStyle:UIButtonStyleCustom];
imageButton.frame = CGRectMake(0,0,24,24);//Standard size of a UIBarButtonItem i think.
[imageButton setImage:[UIImage imageNamed:@"arrow_up_24.png"] forState:UIControlStateNormal];
[imageButton addTarget:self action:@selector(logoutButtonPressed) forControlEvents:UIControlEventTouchUpInside];

UIBarButtonItem *barItem = [[UIBarButtonItem alloc] initWithCustomView:imageButton];

//将其添加到您的栏或此处。

如果你想要像普通按钮一样的白光，你必须设置

imageButton.showsTouchWhenHighlighted = YES;