Android EditText AddTextChangeListener Currency Format
android, android-edittext
Solution
Per this SO question Format EditText to currency with whole numbers I added setMaximumFractionDigits to 0 like so
@Override
public void afterTextChanged(Editable s) {
if (!s.toString().equals(current)) {
inputValue.removeTextChangedListener(this);
String replaceable = String.format("[%s,.\\s]", NumberFormat.getCurrencyInstance().getCurrency().getSymbol());
String cleanString = s.toString().replaceAll(replaceable, "");
double parsed;
try {
parsed = Double.parseDouble(cleanString);
} catch (NumberFormatException e) {
parsed = 0.00;
}
NumberFormat formatter = NumberFormat.getCurrencyInstance();
formatter.setMaximumFractionDigits(0);
String formatted = formatter.format((parsed));
current = formatted;
inputValue.setText(formatted);
inputValue.setSelection(formatted.length());
inputValue.addTextChangedListener(this);
}
Problem
Through SO I put together the following EditText addTextChangedListener event handler, it works fine except for a little improvement that I need. When I type, it populates the digits from right to left. I would rather it populates from left to right. Right now if I enter 50 it formats as $0.50, when I enter 50 I want it to format as $50.00 Below is the xml declaration and the Java code, please can someone point me to what I need to change to get the desired result. XML declaration ``` <EditText android:id="@+id/valueEditText" android:layout_row="1" android:hint="@string/hint_value_to_add" android:imeOptions="actionNext" android:inputType="numberDecimal" style="@style/EnrollEditViewStyle" /> <requestFocus /> ``` Java Code ``` inputValue = (EditText) findViewById(R.id.valueEditText); inputValue.addTextChangedListener(new TextWatcher() { private String current = ""; @Override public void onTextChanged(CharSequence s, int start, int before, int count) { } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { // TODO Auto-generated method stub } @Override public void afterTextChanged(Editable s) { if (!s.toString().equals(current)) { inputValue.removeTextChangedListener(this); String replaceable = String.format("[%s,.\\s]", NumberFormat.getCurrencyInstance().getCurrency().getSymbol()); String cleanString = s.toString().replaceAll(replaceable, ""); double parsed; try { parsed = Double.parseDouble(cleanString); } catch (NumberFormatException e) { parsed = 0.00; } String formatted = NumberFormat.getCurrencyInstance().format((parsed/100)); current = formatted; inputValue.setText(formatted); inputValue.setSelection(formatted.length()); inputValue.addTextChangedListener(this); } } }); ```