iphone - 如何使用UITouch移动铅笔图像？

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                                7年前关闭。
            
                    
我想使用UITouch移动铅笔图像吗？我想动铅笔，它会写我们想要的任何东西。

但是我无法移动和书写铅笔图像。

专家的任何提示都将受到欢迎。

最佳答案

使用以下方法：

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

  UITouch *touch = [touches anyObject];
  CGPoint currentPoint = [touch locationInView:self];
  yourPencilImgView.center = [touch locationInView:self];
}

和

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {

  UITouch *touch = [touches anyObject];
  CGPoint currentPoint = [touch locationInView:self];
  yourPencilImgView.center  = currentPoint;
}

关于iphone - 如何使用UITouch移动铅笔图像？ ，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/14138948/