UItextView在屏幕上移动时获取放大镜位置

Question

我有一个UITextView，里面没有任何文字。当我长按此视图时，放大镜出现在屏幕上，我可以用放大镜移动手指。问题是：当我移动放大镜时，有没有办法捕获这个手指动作以获得放大镜的位置？

谢谢，

Answer 1

我们可以用触摸方法做到这一点。

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
   NSLog(@"touchesBegan");
}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{
  [super touchesBegan:touches withEvent:event];
  NSLog(@"touchesMoved");
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{
   NSLog(@"****touchesEnded");
   [self.nextResponder touchesEnded: touches withEvent:event];  
   NSLog(@"****touchesEnded");
   [super touchesEnded:touches withEvent:event];
   NSLog(@"****touchesEnded");
}

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event{
    [super touches... etc]; 
    NSLog(@"touchesCancelled");
}