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We have the value from the input field stored in our Double variable. The syntax for this looks like this:ĭouble doubleVariable = Double.parseDouble( stringVariable) Just like with the conversion to a string, we first define a variable of a double datatype. Convert String data type into Double data type: But since we are dealing with numbers, we have to use the Double data type to hold this value.

Now, stringVariable holds the data in String form. String stringVariable = editTextVariable.getText().toString() We do this by using two functions, getText() and toString(). This variable will hold the value from editTextVariable in the form of a string.

Convert this data into a String data type:

Now the variable editTextVariable will have the value entered by the user in the text field with the id textFieldName. EditText editTextVariable = (EditText) findViewById (R.id.