Question

I have a code that takes a value from a button and then outputs something.
If I don’t use a break; and I press on the left button, it will output thousands of left. The same for enter and right.

I am no Java guru and I started just few weeks ago with Java programming.

I want my code never to stop reading the button value, but I don’t want my code to output thousands of left, right or enter when a button is pushed. How can I do this? This code is working but stops after I push one button. If I push button left, it will output left once, and then stops running. Without the break; it will output thousands of left.

for (int i = 0; ; i++) {

        // Get the data from analog input 5
        int sensorValue1 = phidget.getSensorValue(1);
        int sensorValue2 = phidget.getSensorValue(2);
        int sensorValue3 = phidget.getSensorValue(3);

        if (sensorValue1 > 100 || sensorValue2 > 100 || sensorValue3 > 100){
        // printing value
        //System.out.println("sensorValue1 = " + sensorValue1 + ", sensorValue2 = " + sensorValue2 + ", sensorValue3 = " + sensorValue3 + ", Count = " + i);
            if (sensorValue1 > 100){

                System.out.println("RIGHT");

                // simulates RIGHT key
                try { 
                Robot robot = new Robot(); 
                robot.keyPress(KeyEvent.VK_RIGHT); 
                } catch (AWTException e) { 
                e.printStackTrace(); 
                }
                break;

            } else if (sensorValue2 > 100)
            {
                System.out.println("LEFT");

                // simulates LEFT key
                try { 
                Robot robot = new Robot(); 
                robot.keyPress(KeyEvent.VK_LEFT); 
                } catch (AWTException e) { 
                e.printStackTrace(); 
                }
                break;
            } else if (sensorValue3 > 100)
            {
                System.out.println("ENTER");

                // simulates ENTER key
                try { 
                Robot robot = new Robot(); 
                robot.keyPress(KeyEvent.VK_ENTER); 
                } catch (AWTException e) { 
                e.printStackTrace(); 
                }
                break;
            } 
        } else {}

    }

Answer 1

You can track the last handled value of sensorValue and a click is considered to have occured when the new value of sensorValue1 is over 100 while the old value is under 100.

int oldSensorValue1 = 0;
int oldSensorValue2 = 0;
int oldSensorValue3 = 0;
for (int i = 0; ; i++) {

    // Get the data from analog input 5
    int sensorValue1 = phidget.getSensorValue(1);
    int sensorValue2 = phidget.getSensorValue(2);
    int sensorValue3 = phidget.getSensorValue(3);

        if (sensorValue1 > 100 && oldSensorValue1 < 100){

            System.out.println("RIGHT");

            // simulates RIGHT key
            try { 
            Robot robot = new Robot(); 
            robot.keyPress(KeyEvent.VK_RIGHT); 
            } catch (AWTException e) { 
            e.printStackTrace(); 
            }

        } else if (sensorValue2 > 100 && oldSensorValue2 < 100)
        {
            System.out.println("LEFT");

            // simulates LEFT key
            try { 
            Robot robot = new Robot(); 
            robot.keyPress(KeyEvent.VK_LEFT); 
            } catch (AWTException e) { 
            e.printStackTrace(); 
            }
        } else if (sensorValue3 > 100 && oldSensorValue3 < 100)
        {
            System.out.println("ENTER");

            // simulates RIGHT key
            try { 
            Robot robot = new Robot(); 
            robot.keyPress(KeyEvent.VK_RIGHT); 
            } catch (AWTException e) { 
            e.printStackTrace(); 
            }
        }
        oldSensorValue1 = sensorValue1;
        oldSensorValue2 = sensorValue2;
        oldSensorValue3 = sensorValue3;
}