解决导航跳转和模态跳转混合问题

/**
 *  问题:从A到B是通过模态跳转的,从B到C是导航跳转

 */

//注:如果想隐藏导航栏,请在相应VC中写上:
- (void)viewWillAppear:(BOOL)animated {
    [superviewWillAppear:animated];
    [self.navigationControllersetNavigationBarHidden:YES];

}

//显示导航
- (void)viewWillAppear:(BOOL)animated {
    [superviewWillAppear:animated];
    [self.navigationControllersetNavigationBarHidden:NO];

}