Touchesbegan没有检测到被触摸的内容 [英] Touchesbegan not detecting what is being touched

问题描述

我正在使用NSTimer构建一个旋转横幅来跟踪当前图像，图像是从5个不同的图像中动画制作的。我有一个touchesBegan设置，如果有人点击它，继续处理横幅上的触摸事件。我的概念验证有效，但将其移到另一个项目中，它会中断。

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);
}
}

现在当我把断点放到我的项目中时，它抓住触摸很好，但当它到达
if（[触摸视图] == myImageView）
时它没有检测到正在触摸图像视图。

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

不确定会导致这种情况但是您是否尝试过使用UIGestureRecognizer？尝试类似下面的代码，看看是否调用该方法。

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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