第一步：先来看一下侧滑返回
/**
//1.遵守代理
UINavigationBarDelegate
//2.实现俩个方法
- (BOOL)navigationBar:(UINavigationBar *)navigationBar shouldPushItem:(UINavigationItem *)item {
//只有一个控制器的时候禁止手势，防止卡死现象
if ([self respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
self.interactivePopGestureRecognizer.enabled = NO;
}
if (self.childViewControllers.count > 1) {
if ([self respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
self.interactivePopGestureRecognizer.enabled = YES;
}
}
return YES;
}
- (void)navigationBar:(UINavigationBar *)navigationBar didPopItem:(UINavigationItem *)item {
//只有一个控制器的时候禁止手势，防止卡死现象
if (self.childViewControllers.count == 1) {
if ([self respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
self.interactivePopGestureRecognizer.enabled = NO;
}
}
}
*/
第二步：再来看一下全局返回\
都是继承于UINavigationController
1.
遵守代理
UIGestureRecognizerDelegate
2.在viewDidLoad中创建pan手势
- (void)viewDidLoad {
[superviewDidLoad];
self.navigationBar.barTintColor= [UIColorpurpleColor];
// 添加手势
UIPanGestureRecognizer* pan = [[UIPanGestureRecognizeralloc]initWithTarget:self.interactivePopGestureRecognizer.delegateaction:@selector(handleNavigationTransition:)];
pan.delegate=self;
[self.viewaddGestureRecognizer:pan];
// 系统自带手势失效
self.interactivePopGestureRecognizer.enabled=NO;
}
3.实现代理方法并做判断
#pragma mark --- UIGestureRecognizerDelegate
- (BOOL)gestureRecognizer:(UIGestureRecognizer*)gestureRecognizer shouldReceiveTouch:(UITouch*)touch{
// 如果不是根视图控制器就让侧滑手势有效，否则失效
if(self.childViewControllers.count>1) {
returnYES;
}else{
returnNO;
}
}
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