#import "MLNavigationController.h"
@interface MLNavigationController ()
@end
@implementation MLNavigationController
//设置背景
+ (void)initialize{
UINavigationBar *bar = [UINavigationBar appearance];
[bar setBackgroundImage:[UIImage imageNamed:@"navBar_bg_414x70"] forBarMetrics:UIBarMetricsDefault];
}
//重写push方法
- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated{
if (self.childViewControllers.count > 0) {
viewController.hidesBottomBarWhenPushed = YES;
//重写返回按钮,防止手势问题出错,所以要去注意一下
UIButton *backBtn = [[UIButton alloc] init];
[backBtn setImage:[UIImage imageNamed:@"back_9x16"] forState:UIControlStateNormal];
[backBtn addTarget:self action:@selector(back) forControlEvents:UIControlEventTouchUpInside];
[backBtn sizeToFit];
viewController.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:backBtn];
//如果自定义反悔按钮,收拾可能不好使,要去注意
__weak typeof(viewController) weakSelf = viewController;
self.interactivePopGestureRecognizer.delegate = (id)weakSelf;
}
[super pushViewController:viewController animated:animated];
}
//判断是pop还是dismiss
- (void)back{
if ((self.presentedViewController || self.presentingViewController)&&self.childViewControllers.count == 1) {
[self dismissViewControllerAnimated:YES completion:nil];
}else{
[self popViewControllerAnimated:YES];
}
}
@end
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