Arduino Serial.read() from xbee if statement - arduino

Question

I am trying to finish a small project with a moisture sensor connected to a Fio V3.
I have also attach a Xbee S1 module to Fio's socket.
I have upload the following code to Fio:
int igrasia = 7;
void setup()
{
Serial1.begin(9600);
pinMode(igrasia, INPUT_PULLUP);
}
void loop(){
int sensorVal = digitalRead(igrasia);
if (sensorVal == HIGH) {
Serial1.println("0"); // Send OK to xbee
}
else {
Serial1.println("1"); // Send NOT OK to xbee
}
delay(5000);
}
On my computer using the Xbee USB explorer I am receiving correct data on X-CTU every 5 seconds.
Zero (0) while the sensor is outside a glass of water and one (1) while the sensor is in the glass of water.
I want to read these bytes to an Arduino Uno with a LCD screen attached and an Xbee shield. For this reason I have uploaded to Uno the following code:
#include <SPI.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x38,16,2); // set the LCD address to 0x20 for a 16 chars
void setup(){
Serial.begin(9600);
//configure pin2 as an input and enable the internal pull-up resistor
// pinMode(8, INPUT_PULLUP);
pinMode(13, OUTPUT);
digitalWrite(13, LOW);
lcd.init(); // initialize the lcd
}
void loop(){
if(Serial.available())
{
char getData = Serial.read();
if (getData == '1')
{
Serial.print(getData);
digitalWrite(13, HIGH);
lcd.clear();
lcd.setCursor (0,0); // go to start of 1st line
lcd.print("ATTENTION !!!!");
lcd.setCursor (0,1); // go to start of 1st line
lcd.print("WET environment");
}
else {
Serial.print(getData);
digitalWrite(13, LOW);
lcd.clear();
lcd.setCursor (0,0); // go to start of 1st line
lcd.print("dry environment");
lcd.setCursor (0,1); // go to start of 1st line
lcd.print("all looks good!");
}
}
}
It doesn't work properly :- (
I have correct functionality for 0 and while the sensor is outside the water. LCD monitor shows "dry environment".
But as soon as I place the sensor in the water, LCD is not working as required.
Even if I leave the sensor in the water the LCD still displays "dry environment".
I tried the sensor connected directly to Uno with the LCD attached and it works!
I suppose something is wrong with the serial.read() and/or my If / loop statement on UNO.
Any suggestions or advice?

Answer 1

When you transmit the data, you're sending it as a String "1", "0".
On the receiver, you're testing for characters '1', '0'. Strings are terminated with a null character (/u0000), whereas characters are not. Therefore the condition is always failed. You could try transmitting and testing characters only.