类似支付宝、淘宝刮奖效果，刮刮卡。 - (void)scratchBegan:(CGPoint)point { NSLog("开始刮奖 %f,%f",point.x,point.y); } - (void)scratchMoved:(CGFloat)progress { NSLog("刮奖百分比：%f",progress); if (progress>=0.25) {//百分之25 [self.scratchCard.scrat