導航欄去掉下面的黑線方法:
- (void)viewWillAppear:(BOOL)animated{? ? [superviewWillAppear:animated];self.navigationController.navigationBar.subviews[0].subviews[0].hidden =YES;} ? ?//這個可以實現
- (void)viewWillAppear:(BOOL)animated{? ? [superviewWillAppear:animated];self.navigationController.navigationBar.subviews[0].subviews[1].hidden =YES;}