objective-c - 如何在导航栏按钮项中添加自定义图像？

 UIBarButtonItem *doneitem=[[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(donePressed:)]autorelease];
    self.navigationItem.rightBarButtonItem=doneitem;

这是我的应用程序的代码，我需要在此按钮上添加图像吗？

请帮我。

最佳答案

试试这个代码:

UIImage* image3 = [UIImage imageNamed:@"mail-48_24.png"];
CGRect frameimg = CGRectMake(0, 0, image3.size.width, image3.size.height);
UIButton *someButton = [[UIButton alloc] initWithFrame:frameimg];
[someButton setBackgroundImage:image3 forState:UIControlStateNormal];
[someButton addTarget:self action:@selector(sendmail)
     forControlEvents:UIControlEventTouchUpInside];
[someButton setShowsTouchWhenHighlighted:YES];

UIBarButtonItem *mailbutton =[[UIBarButtonItem alloc] initWithCustomView:someButton];
self.navigationItem.rightBarButtonItem=mailbutton;
[someButton release];

关于objective-c - 如何在导航栏按钮项中添加自定义图像？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/5933800/