标签: uiswipegesturerecognizer

一切都在我的代码中工作,但我总是警告"swipeLeft.delegate = self;"

这个警告标志着"自我".

警告是:将'UIWebView*'传递给不兼容类型的参数

和

将'viewCont*const __strong'传递给不兼容类型的参数"id UIGestureRecognizerDelegate

我能做什么？？

我的代码:

#import "viewCont.h"

@implementation viewCont

@synthesize webView = webView_;

- (void)viewDidLoad
{
//...code

// add Left 
    UISwipeGestureRecognizer *swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeLeftAction:)];
    swipeLeft.direction = UISwipeGestureRecognizerDirectionLeft;
    swipeLeft.delegate =  self;
    [webView_ addGestureRecognizer:swipeLeft];

//code....
}

我听说UISwipeGestureRecognizer可以用来区分慢速滑动和快速滑动。但我找不到任何 API 来区分。

我在touchesEnded方法中调用了一个名为addProjectile的方法.addProjectile接收touchesEnded方法接收的触摸的NSSet.为简单起见,我只在相关代码中发布了我的问题.所以,要明确一点:

-(void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
    [self addProjectile:touches]; }
-(void) addProjectile:(NSSet *)touches {//do stuff }

我想在名为swipeRight的UIPanGestureRecognizer方法的末尾调用addProjectile并发送正确的NSSet触摸.

-(void)swipedRight:(UIPanGestureRecognizer *)recognizer {
    CGPoint panned=[recognizer translationInView:self.view];
    if(panned.x>50){//do stuff }
    else {
    NSSet *touches; <-- this is what I need to get
    [self addProjectile:touches];

所以我的问题是如何在swipedRight结束时获得正确的NSSet触摸(这是用户拿起他/她的手指):正确执行addProjectile方法.

我正在尝试制作由 a 触发的自定义交互式过渡，UISwipeGestureRecognizer但状态始终为UIGestureRecognizerStateEnded，因此我无法使用它来控制动画。

Apple 的文档说Some of these states are not applicable to discrete gestures但他们没有说哪些状态可用于UISwipeGestureRecognizer. [ https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIGestureRecognizer_Class/index.html#//apple_ref/occ/instp/UIGestureRecognizer/state]

难道UISwipeGestureRecognizer只能有一个状态还是我做错了什么？

如何在同一个 View-iOS 上检测 UISwipeGestureRecognizer 2 手指滑动或 3 手指滑动

任何人有想法？

在我的iOS应用程序中,我有以下设置:

- (void)setupGestures
{
   UIPanGestureRecognizer* panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panGesture:)];                                                           
   [self.view addGestureRecognizer:panRecognizer];

   UISwipeGestureRecognizer* swipeUpRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipe:)];

   [swipeUpRecognizer setDirection:UISwipeGestureRecognizerDirectionUp];
   [self.view addGestureRecognizer:swipeUpRecognizer];
}

// then I have following implementation of selectors

// this method supposed to give me the length of the swipe

- (void)panGesture:(UIPanGestureRecognizer *)sender 
{
   if (sender.state == UIGestureRecognizerStateBegan)
   {
      startLocation = [sender locationInView:self.view];
   }
   else if (sender.state == UIGestureRecognizerStateEnded)
   {
      CGPoint stopLocation = [sender locationInView:self.view];
      CGFloat dx = stopLocation.x - startLocation.x;
      CGFloat dy = stopLocation.y …

我目前正面临一个场景,我UIPageViewController在视图上使用了一个场景,当用户从索引值向右滑动时我想要正确的滑动手势0,所以我试图UIPageViewController通过以下代码添加右侧滑动手势:

UISwipeGestureRecognizer *rightRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(rightSwipeHandle:)];
rightRecognizer.direction = UISwipeGestureRecognizerDirectionRight;
[rightRecognizer setNumberOfTouchesRequired:1];
//Edit 1
[self.pageViewController.view addGestureRecognizer:rightRecognizer];

但是,当我添加手势时,pageviewcontroller我收到以下错误消息(由@Lyndsey Scott解答)

no visible interface uipageviewcontroller declares the selector addgesturerecognizer

任何人都可以指导我如何在此实现正确的滑动 pageViewController

编辑1:替换了@Lyndsey Scott提供的代码,删除了错误,但问题仍然存在,我无法触发该滑动事件.

注意：这是iOS 13 beta，但也可能会在明天正式发布。

更新2：我将其替换为较大的缩略图，但仍然有问题。

更新：如果我非常精确地触摸滑块上的拇指，它似乎仍然可以连续控制。但是，为什么要更改此设置？如何使它像以前一样进行控制？

我向视图添加了滑动手势识别器：

    let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(self.respondToSwipeGesture))
    swipeRight.direction = UISwipeGestureRecognizer.Direction.right
    self.view.addGestureRecognizer(swipeRight)

稍后，我将UISlider添加到同一视图：

        let slider = UISlider()
        let sliderLength:CGFloat = 175
        slider.frame = CGRect(x:0,
                              y:CGFloat(customHeight) - 35,
                              width:sliderLength,
                              height:35)


        slider.minimumValue = -1.2 
        slider.maximumValue = 0.6
        slider.setValue(Float(snowSliderValAdder), animated: false)

        slider.addTarget(self, action: #selector(self.updateSnowSliderValue(_:)), for: .valueChanged)

        view.addSubview(slider)

以前可以正常运行的东西现在在iOS 13中表现不佳。如果我将其缓慢移动，则可以移动滑块上的拇指，但是如果进行任何滑动动作，则滑块上的拇指会停止移动，并且手势为触发。我该如何阻止这种情况的发生？