Question

我，我尝试使用Timer.scheduledTimer(withTimeInterval: 2, repeats: false, block: { (Timer) in，但它不符合我的要求。这是我的想法：

If certatin rotation is true {

start timer;
if timer = 2seconds{
perform some action
}
if timer = 3 seconds{
perform another action
}


}else stop timer

我的代码：

 //===============================================FIRTS
                    if Counter == 1 {
                    if self.Bottle.zRotation < -0.94 && self.Bottle.zPosition > -0.98 {

                        self.WaterDrop.alpha = 1

                        Timer.scheduledTimer(withTimeInterval: 1, repeats: false, block: { (Timer) in
                            self.GlassWater1.alpha = 0.5
                            self.BottleWater6.alpha = 0.0
                            self.WaterDrop.setScale(CGFloat(1.2))
                            })
                        Counter = 2
                        print(Counter)
                        }else {
                        self.WaterDrop.alpha = 0.0
                        self.WaterDrop.setScale(CGFloat(1.0))
                        Counter = 1
                        // print(Counter)
                    }
                    }
                    //===============================================SECOND
                    if Counter == 2 {
                        if self.Bottle.zRotation < -0.94 && self.Bottle.zPosition > -0.98 {

                            self.WaterDrop.alpha = 1

                            Timer.scheduledTimer(withTimeInterval: 2, repeats: false, block: { (Timer) in
                                self.GlassWater2.alpha = 0.5
                                self.BottleWater5.alpha = 0.0
                                self.WaterDrop.setScale(CGFloat(1.4))
                                })
                            Counter = 3
                            // print(Counter)
                        }else {
                            self.WaterDrop.alpha = 0.0
                            self.WaterDrop.setScale(CGFloat(1.0))
                            Counter = 1
                           //  print(Counter)
                        }
                    }
                    //===============================================Third
                    if Counter == 3 {
                        if self.Bottle.zRotation < -0.94 && self.Bottle.zPosition > -0.98 {

                            self.WaterDrop.alpha = 1

                            Timer.scheduledTimer(withTimeInterval: 3, repeats: false, block: { (Timer) in
                                self.GlassWater3.alpha = 0.5
                                self.BottleWater4.alpha = 0.0
                                self.WaterDrop.setScale(CGFloat(1.4))
                            })
                            Counter = 4
                            // print(Counter)
                        }else {
                            self.WaterDrop.alpha = 0.0
                            self.WaterDrop.setScale(CGFloat(1.0))
                            Counter = 1
                            // print(Counter)
                        }
                    }


                  //  print("tilred in z")
                }

Answer 1

试试这个：

在viewController中获取变量time：

var time = 0

然后这样做：

Timer.scheduledTimer(withTimeInterval: 1, repeats: true, block: { (timer) in

     time = time.advanced(by: 1)
     if time == 2 {
          //Perform something at 2 seconds
     }else if time == 3 {
          //Perform something at 3 seconds
     }else {
          //Stop Timer
          timer.invalidate()
     }
}

希望它有所帮助！

Answer 2

如果计时器= 2秒＆＃34;它并不清楚你的意思是＆＃34;

此代码是在重复运行的函数中，还是在块内运行的代码用于计时器？

代码可能看起来像这样

df2 <- df %>% mutate(clock = chron(times = clock)) %>% mutate(rolex = chron(times = rolex))

}

if语句中的秒数计数器

2 个答案: