禁用系统滑动返回功能

- (void)viewDidAppear:(BOOL)animated{

 [super viewDidAppear:animated];

if([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]){

self.navigationController.interactivePopGestureRecognizer.enabled = NO;

self.navigationController.interactivePopGestureRecognizer.delegate =self; 

 }

}

- (void)viewWillDisappear:(BOOL)animated {

 [super viewWillDisappear:animated];

if([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {

self.navigationController.interactivePopGestureRecognizer.enabled = YES;

self.navigationController.interactivePopGestureRecognizer.delegate =nil;

 }

}


- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer*)gestureRecognizer

{return NO; //YES：允许右滑返回  NO：禁止右滑返回

}

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