iphone - 自定义导航栏后退按钮

Question

我总是设置UINavigationBars的backgroundImages，但我从来没有弄清楚如何设置后退按钮的backgroundImage UINavigationBar。

我怎样才能做到这一点？

Answer 1

UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(0,0,36,30);
[button setBackgroundImage:[UIImage imageNamed:@"backgroundImage.png"] forState:UIControlStateNormal];

//[button setTitle:@"  Back" forState:UIControlStateNormal];
//[button.titleLabel setFont:[UIFont boldSystemFontOfSize:11]];

[button addTarget:self.navigationController action:@selector(popViewControllerAnimated:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *barButtonItem = [[UIBarButtonItem alloc] initWithCustomView:button];
[self.navigationItem setLeftBarButtonItem:barButtonItem];