iOS - 啟用與禁用滑動返回手勢

• 禁用手勢返回

- (void)viewDidAppear:(BOOL)animated  
{  
    [super viewDidAppear:animated];  
    // 禁用返回手勢  
    if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {  
        self.navigationController.interactivePopGestureRecognizer.enabled = NO;  
    }  
}  

• 如果需要在其他界面繼續使用滑動返回手勢則再添加如下代碼

- (void)viewWillDisappear:(BOOL)animated  
{  
    [super viewWillDisappear:animated];  
    // 開啟返回手勢  
    if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {  
        self.navigationController.interactivePopGestureRecognizer.enabled = YES;  
    }  
}