iOS 导航栏返回按钮自定义

2019-11-08 00:32:12

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来源：转载

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如果app没有要求可以用系统的，不过很多app到时要求自定义返回按钮的，不过设置也比较简单，设置一个根UINavigationController，创建工程的时候设置的UINavigationController继承根UINavigationController就可以，然后在UINavigationController中有个-(void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated方法，我们在这里面设置就可以了

- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated{

if (self.childViewControllers.count) { // 非根控制器

//这里面就是设置一个UIButton

UIButton *backButton = [UIButton buttonWithType:UIButtonTypeCustom]; [backButton setTitle:@"返回" forState:UIControlStateNormal]; [backButton setImage:[UIImage imageNamed:@"navigationButtonReturn"] forState:UIControlStateNormal];// [backButton setImage:[UIImage imageNamed:@"navigationButtonReturnClick"] forState:UIControlStateHighlighted]; [backButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal]; [backButton setTitleColor:[UIColor redColor] forState:UIControlStateHighlighted]; [backButton addTarget:self action:@selector(back) forControlEvents:UIControlEventTouchUpInside]; [backButton sizeToFit]; // 注意:一定要在按钮内容有尺寸的时候,设置才有效果 backButton.contentEdgeInsets = UIEdgeInsetsMake(0, -25, 0, 0); // 设置返回按钮 viewController.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:backButton]; } // 这个方法才是真正执行跳转 [super pushViewController:viewController animated:animated];

}

-(void)back{ [self popViewControllerAnimated:YES];}

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