UISlider相关

• 设置slider当前位置的图像

      [slider setThumbImage:[UIImage imageNamed:@"dd.png"] forState:UIControlStateNormal];
  
  

• 设置起始的颜色

  [slider setMinimumTrackTintColor:[ComHelper colorWithHex:SYSTEM_BLUE_COLOR]]
  
  

• 设置末尾的颜色

  [slider setMaximumTrackTintColor:[UIColor colorWithRed:0 green:0 blue:0 alpha:0.5]]
  
  

• 设置为竖直的

  slider.transform = CGAffineTransformMakeRotation(-M_PI_2);
  
  

• 重新设置slider的frame，并且设置为数值的
  一定要先设置transform为标准的，在设置frame，再设置transform

      slider.transform = CGAffineTransformIdentity;
  
      slider.frame = CGRectMake(0, 0, sliderLength, 20);
  
      [slider setCenter:CGPointMake(xCenter, yCenter)];
  
      slider.transform = CGAffineTransformMakeRotation(-M_PI_2);
  
  

• 动态改变slider的值

  UIView.animateWithDuration(0.2, animations: {
  
  self.mySlider.setValue(0, animated:true)
  
  })
  
  

  Why isn't my UISlider animating