iphone - 如何通过手势更改报价

Question

我正在创建在属性列表中有引号的应用程序，当我按下下一个按钮时它会显示在 UIText 中，另一个引号会出现在 textview 中，但是现在我想在用户根据该动作向左或向右滑动引号时添加手势。我是 iphone 新手。我已经使用viewpagger在android中完成了它。任何人都知道这个我怎么能做到..提前谢谢。

Answer 1

您可以使用 UISwipeGestureRecognizer 来完成。确保您的 textView 不可编辑。

代码如下：

UISwipeGestureRecognizer *leftSwipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(leftSwipe)];
[leftSwipe setDirection:UISwipeGestureRecognizerDirectionLeft];
[_textView addGestureRecognizer:leftSwipe];


UISwipeGestureRecognizer *rightSwipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(rightSwipe)];
[rightSwipe setDirection:UISwipeGestureRecognizerDirectionRight];
[_textView addGestureRecognizer:rightSwipe];

- (void) leftSwipe
{
    NSLog(@"leftSwipe");
}

- (void) rightSwipe
{
    NSLog(@"rightSwipe");
}

现在相应地显示您的报价。

Answer 2

为您的报价添加动画：

首先将 QuartzCore 框架导入您的项目。

#import <QuartzCore/QuartzCore.h>

现在修改滑动方法如下：

- (void) leftSwipe
{
NSLog(@"leftSwipe");

[self curlAnimationFromLeft];
}

- (void) rightSwipe
{
NSLog(@"rightSwipe");

[self curlAnimationFromRight];
}


- (void) curlAnimationFromLeft
{
CATransition *animation = [CATransition animation];
[animation setDelegate:self];
[animation setDuration:1.0];
[animation setTimingFunction:UIViewAnimationCurveEaseInOut];
animation.type = @"pageCurl";
animation.subtype = @"fromRight";
animation.fillMode = kCAFillModeForwards;
[animation setRemovedOnCompletion:YES];
[_textView.layer addAnimation:animation forKey:@"pageCurlAnimation"];
}

-(void)curlAnimationFromRight
{
CATransition *animation = [CATransition animation];
[animation setDelegate:self];
[animation setDuration:1.0];
[animation setTimingFunction:UIViewAnimationCurveEaseInOut];
animation.type = @"pageUnCurl";
animation.subtype = @"fromRight";
animation.fillMode = kCAFillModeForwards;
animation.startProgress = 0.35;
[animation setRemovedOnCompletion:NO];
[_textView.layer addAnimation:animation forKey:@"pageUnCurlAnimation"];
}