我有一个自定义栏按钮项,我想将其向下微调 5 个像素。我将如何使用以下代码来做到这一点。我试图设置“y”点,但不断收到语法错误。
[self.navigationController setNavigationBarHidden:NO animated:YES];
UIImage *image = [UIImage imageNamed:@"arrow_back.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
[self.navigationController.navigationBar addSubview:imageView];
[imageView release];
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setImage:buttonImage forState:UIControlStateNormal];
//set the frame of the button to the size of the image (see note below)
button.frame = CGRectMake(0, 0, buttonImage.size.width, buttonImage.size.height);
[button addTarget:self action:@selector(back) forControlEvents:UIControlEventTouchUpInside];
//create a UIBarButtonItem with the button as a custom view
UIBarButtonItem *customBarItem = [[UIBarButtonItem alloc] initWithCustomView:button];
self.navigationItem.leftBarButtonItem = customBarItem;
[customBarItem release];
}
谢谢你的帮助