UINavigation的常用问题解决方案

-(void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor=[UIColor purpleColor];
//一句话解决返回按钮的颜色，以前默认的是系统的蓝色返回按钮，在这里可以改成我们想要的颜色
[self.navigationController.navigationBar setTintColor:[UIColor darkGrayColor]];
}

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
TextViewController * vc =[[ TextViewController alloc]init];
[self.navigationController pushViewController:vc animated:YES];
}