IOS-UIView的移动

• 1.UIView的移动
• - (void)initAdditionalControl
  {
      self.moveView = [[UIView alloc] initWithFrame:CGRectMake(100, 300, 100, 100)];
      self.moveView.backgroundColor = [UIColor redColor];
      [self.view addSubview:self.moveView];
  }
  
  - (void)touchesMoved:(NSSet<UITouch _> _)touches withEvent:(UIEvent *)event
  {
  UITouch *touch = [touches anyObject];
  CGPoint cup = [touch locationInView:self.moveView];
  CGPoint bef = [touch previousLocationInView:self.moveView];
  self.moveView.transform = CGAffineTransformTranslate(self.moveView.transform, cup.x - bef.x, cup.y - bef.y);
  }