java WHILE循环计数

Question

在java中，只要输入设备返回较低的值，如何让while循环运行

double leftDist = distanceSensorLeft.getDistance(DistanceUnit.MM);
double rightDist = distanceSensorRight.getDistance(DistanceUnit.MM);
leftDrive.setTargetPosition(leftDrive.getCurrentPosition() - 1500);
rightDrive.setTargetPosition(rightDrive.getCurrentPosition() + 1500);
leftDrive.setPower(0.2);
rightDrive.setPower(-0.2);
while (leftDrive.isBusy() && rightDrive.isBusy() && opModeIsActive() && rightDist/* value is smaller than previous value*/  && leftDist// value is smaller than previous value  ) {

}

Answer 1

您可以将最后一个值保存在变量中，然后将其与实际值进行比较

 boolean continueBool= true;
 double lastValue=0;
 double leftDist = distanceSensorLeft.getDistance(DistanceUnit.MM);
 double rightDist = distanceSensorRight.getDistance(DistanceUnit.MM);
 leftDrive.setTargetPosition(leftDrive.getCurrentPosition() - 1500);
 rightDrive.setTargetPosition(rightDrive.getCurrentPosition() + 1500);
 leftDrive.setPower(0.2);
 rightDrive.setPower(-0.2);

 while (continueBool) {
        if(lastValue<=actualValue){
        continueBool=false;
    }

        lastValue=actualValue;

}