Question

在用户触摸NSMutableArray中的图像后，我将如何向上滑动webview 基本上我希望能够为每个图像提供触摸事件，因此如果用户触摸图像“ban3.png”，它会向上滑动我已经创建的视图（WebView）我提前感谢您的帮助。

代码

[imagesQueue = [[NSMutableArray alloc] init];
[imagesQueue addObject:[UIImage imageNamed:@"ban3.png"]];
[imagesQueue addObject:[UIImage imageNamed:@"ban1.png"]];
[imagesQueue addObject:[UIImage imageNamed:@"ban2.png"]];


//Put the last image on imageBack (UIImageView)
imageBack.image = [imagesQueue objectAtIndex:[imagesQueue count] - 1];

//Insert the last image item from array to the first position 
[imagesQueue insertObject: imageBack.image atIndex:0];

//Remove the last image item from array
[imagesQueue removeLastObject];

//Change UIImageView alpha
//The desired opacity of the image, specified as a value between 0.0 and 1.0. 
//A value of 0.0 renders the image totally transparent while 1.0 renders it fully opaque. 
//Values larger than 1.0 are interpreted as 1.0.
imageFront.alpha = 1.0;
imageBack.alpha = 0.0;

//Call nextImageAnimation add the next picture and produce the infinite loop
[self nextImageAnimation];

Answer 1

只需遍历您的数组并为每个图像添加UITapGestureRecognizer：

for(UIView *image in self.myImages)
{
    UITapGestureRecognizer* recognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTap:)];

    recognizer.numberOfTapsRequired = 1;
    recognizer.numberOfTouchesRequired = 1;
    [image addGestureRecognizer: recognizer];
}

然后在您的handleTap:方法中，只需向上滑动视图（也许更改它的框架）。

用户在NSMutableArray中触摸图像后如何向上滑动视图

1 个答案: