Basic imperial conversion problem

Question

Coding a calculation tool for my android. On of the inputs is distance in Feet and Inches.

I have two inputs (input3 and input4) for feet and inches, respectively. In my calculation I am trying to convert these two inputs to a decimal number to be used in the rest of the equation. Here's the part of my code that does this:

private void doCalculation() { 
    // Get entered input value 
    String strValue3 = input3.getText().toString(); 
    String strValue4 = input4.getText().toString();

    // Perform a hard-coded calculation 
    double imperial1 = (Integer.parseInt(strValue3) + (Integer.parseInt(strValue4) / 12));

    // Update the UI with the result to test if calc worked 
    output2.setText("Test: "+ imperial1); 
}

My test values are 4 feet, 6 inches. The 4 comes across fine, but the 6 inches defaults to 0 when it is divided by 12. So my result is 4.0 I tried cutting the calculation down to JUST the division operation, and the result was 0.0

What am I doing wrong? (fyi: this is my first time using Java)

Answer 1

Your types are wrong. You're parsing them as ints when they really should be doubles.

Try:

double imperial1 = Double.parseDouble(strValue3) + 
    (Double.parseDouble(strValue4) / 12.0);