here.java

Guys I have Some issue:

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: my.kylogger.johnmelodyme.iot.embedded.serialcommunicationuart, PID: 11607
    java.lang.IllegalStateException: Could not execute method for android:onClick


My Source :
public void OpenSerial(View view){
        String baudtext = Baud.getSelectedItem().toString();
        switch (baudtext) {
            case "300 baud":
                physicaloid.setBaudrate(300);
                break;

            case "1200 baud":
                physicaloid.setBaudrate(1200);
                break;

            case "2400 baud":
                physicaloid.setBaudrate(2400);
                break;

            case "4800 baud":
                physicaloid.setBaudrate(4800);
                break;

            case "9600 baud":
                physicaloid.setBaudrate(9600);
                break;

            case "19200 baud":
                physicaloid.setBaudrate(19200);
                break;

            case "38400 baud":
                physicaloid.setBaudrate(38400);
                break;

            case "576600 baud":
                physicaloid.setBaudrate(576600);
                break;

            case "7448800 baud":
                physicaloid.setBaudrate(744880);
                break;

            case "115200 baud":
                physicaloid.setBaudrate(115200);
                break;

            case "230400 baud":
                physicaloid.setBaudrate(230400);
                break;

            case "250000 baud":
                physicaloid.setBaudrate(250000);
                break;

            default:
                physicaloid.setBaudrate(9600);
                break;
        }