Android:Got NumberFormatExxception while getting data from EditText field

Question

java.lang.RuntimeException: Unable to start activity ComponentInfo { com.project/com.project.simple} : java.lang.NumberFormatException

EditText et1,et2,et3;
Button b1, b2;
Float two,three,four;   
@Override
protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

setContentView(R.layout.can);

et1 = (EditText) findViewById(R.id.editText1);

two = Float.valueOf(et1.getText().toString());

et2 = (EditText) findViewById(R.id.editText2);

three = Float.valueOf(et2.getText().toString());

et3 = (EditText) findViewById(R.id.editText3);

four = Float.valueOf(et3.getText().toString());

    b1 = (Button) findViewById(R.id.button1);

b2 = (Button) findViewById(R.id.button2);

b1.setOnClickListener(new OnClickListener() {

Answer 1

you are in onCreate() where the fields are specified. the user could not have time to enter any valid data. you need to move the fetching of the data somewhere else...like your onClick() perhaps.