Touchesbegin没有检测到被触摸的东西-移动开发问题

Touchesbegan not detecting what is being touched(Touchesbegin没有检测到被触摸的东西)

本文介绍了Touchesbegin没有检测到被触摸的东西的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在使用 NSTimer 构建一个旋转横幅，以跟踪当前图像，该图像由 5 个不同的图像组成.如果有人点击它，我设置了一个 touchesBegan 来处理横幅上的触摸事件.我的概念验证有效，但将其转移到另一个项目中，它就崩溃了.

I'm building a rotating banner using a NSTimer to keep track of the current image with the image being animated from 5 different images. I have a touchesBegan set up to keep handle the touch event on the banner if someone clicks it. My proof-of-concept works, but moving it into another project, it breaks.

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
UITouch *touch = [[event allTouches] anyObject];
if ([touch view] == myImageView){
    [self getImage];
    NSLog(@"%@", currentImage);
}
}

现在，当我在项目中设置断点时，它可以很好地抓住触摸，但是当它到达if ([触摸视图] == myImageView)它没有检测到图像视图被触摸.

Now when I put break points into my project, it grabs the touch just fine, but when it gets to the if ([touch view] == myImageView) it doesn't detect that the image view is being touched.

推荐答案

不确定是什么原因造成的，但您是否尝试过使用 UIGestureRecognizer?试试下面的代码，看看这个方法是否被调用.

Not sure what would cause that but have you tried using a UIGestureRecognizer? Try something like the code below and see if the method gets called.

  //Add Gesture Recognizer
  UITapGestureRecognizer *tapped = [[UITapGestureRecognizer alloc] initWithTarget:self    action:@selector(imageSelected)];
  tapped.numberOfTapsRequired = 1;
  [theImageView addGestureRecognizer:tapped];

  //Memory Cleanup
  [tapped release];

 -(void)imageSelected
  {
    NSLog(@"Selected an Image");
  }

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