或者
- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated
{
if (self.viewControllers.count > 0) {
/* 不是栈底控制器的时候隐藏tabbar */
viewController.hidesBottomBarWhenPushed = YES;
[self.navigationBar setBackIndicatorImage:[UIImage imageNamed:@"rrrr"]];
[self.navigationBar setBackIndicatorTransitionMaskImage:[UIImage imageNamed:@"rrrr"]];
UIBarButtonItem *backItem = [[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStylePlain target:nil action:nil];
self.navigationItem.leftBarButtonItem = backItem;
}
[super pushViewController:viewController animated:animated];
}
进过上面的反复测试：在自定义导航栏控制器中backBarButtonItem不能用View视图方法自定义，而leftBarButtonItem可以。
setBackIndicatorImage和setBackIndicatorTransitionMaskImage无论怎么设置都是只能看到setBackIndicatorImage的图片，找不到原因！！！
然后尝试直接在root视图控制器里面设置返回按钮backBarButtonItem的自定义view,右滑手势可用，但是设置leftBarButtonItem就不能使用右滑手势：
- (void)viewDidLoad {
[super viewDidLoad];
// 设置左边的返回按钮
UIButton *backBtn = [UIButton buttonWithType:UIButtonTypeCustom];
backBtn.frame = CGRectMake(0, 0, 44, 44);
backBtn.imageView.contentMode = UIViewContentModeCenter;
backBtn.contentEdgeInsets = UIEdgeInsetsMake(0, 0, 0, 34);
[backBtn setImage:[UIImage imageNamed:@"rrrr"] forState:UIControlStateNormal];
[backBtn setImage:[UIImage imageNamed:@"rrrr"] forState:UIControlStateHighlighted];
[backBtn addTarget: self action: @selector(back) forControlEvents: UIControlEventTouchUpInside];
backBtn.backgroundColor = [UIColor redColor];
[self.navigationController.navigationBar setBackIndicatorImage:[UIImage imageNamed:@"rrrr"]];
[self.navigationController.navigationBar setBackIndicatorTransitionMaskImage:[UIImage imageNamed:@"rrrr"]];
UIBarButtonItem *backBtnItem=[[UIBarButtonItem alloc]initWithCustomView:backBtn];
backBtnItem.title = @"";
self.navigationItem.backBarButtonItem = backBtnItem;
}
以上是自己的验证，希望对大家的学习有所帮助，也希望大家多多支持ASPKU。
注：相关教程知识阅读请移步到IOS开发频道。
