iOS禁止返回手势

添加协议UIGestureRecognizerDelegate

在viewDidLoad里添加以下代码

id traget = self.navigationController.interactivePopGestureRecognizer.delegate;
UIPanGestureRecognizer * pan = [[UIPanGestureRecognizer alloc]initWithTarget:traget action:nil];
[self.view addGestureRecognizer:pan];