let arrowImage = UIImageView(image: UIImage(named: "Machine_arrow")!.imageWithRenderingMode(.AlwaysTemplate))
let arrowButton = UIButton(frame: CGRectMake(700, 20, arrowImage.bounds.width, arrowImage.bounds.height))
arrowButton.addSubview(arrowImage)
arrowButton.addTarget(self, action: #selector(btnClicked(_:event:)), forControlEvents: .TouchUpInside)
// 检查用户点击按钮时的位置，并转发事件到对应的accessorytapped事件
func btnClicked(sender: UIButton, event: AnyObject) {
let touches = event.allTouches()! as NSSet
let touch = touches.anyObject() as! UITouch
let currentTouchPosition = touch.locationInView(selectTable)
let indexPath: NSIndexPath = selectTable.indexPathForRowAtPoint(currentTouchPosition)!
tableView(selectTable, accessoryButtonTappedForRowWithIndexPath: indexPath)
}
// 这样，UITableView的accessoryButtonTappedForRowWithIndexPath方法会被触发，并且获得一个indexPath 参数。通过这个indexPath 参数，我们可以区分到底是众多按钮中的哪一个附件按钮发生了触摸事件：
func tableView(tableView: UITableView, accessoryButtonTappedForRowWithIndexPath indexPath: NSIndexPath) {
let idx = indexPath.row
//在这里加入自己的逻辑
print(idx)
// 点击箭头旋转
rotat()
// rotateArrow()
}
// 旋转动画一
func rotat() {
//创建旋转动画
let anim = CABasicAnimation(keyPath: "transform.rotation")
//旋转角度
anim.toValue = 1 * M_PI
//旋转指定角度需要的时间
anim.duration = 1
//旋转重复次数
anim.repeatCount = MAXFLOAT
//动画执行完后不移除
anim.removedOnCompletion = true
//将动画添加到视图的laye上
arrowImage.layer.addAnimation(anim, forKey: nil)
//取消动画
arrowImage.layer.removeAllAnimations()
//这个是旋转方向的动画
UIView.animateWithDuration(0.2) { () -> Void in
//指定旋转角度是180°
self.arrowImage.transform = CGAffineTransformRotate(self.arrowImage.transform, CGFloat(M_PI))
}
}
// 旋转动画二
func rotateArrow() {
UIView.animateWithDuration(0.3, animations: {[weak self] () -> () in
if let selfie = self {
selfie.arrowImage.transform = CGAffineTransformRotate(selfie.arrowImage.transform, 180 * CGFloat(M_PI/180))
}
})
}