EditText 输入金额

Question

I am developing a Point Of Sales app.

So I would like to let user to enter the purchase amount

1. Let's say User input 100000 but I want it to automatically show up 100,000 . and 1000000 become 1,000,000

2. The second problem is that, I don't want user to be able to input . themselves.

3. Third problem is that since this is money, we can't let user to enter 0 in the beginning.

Any ideas?

So far I can only come up with inputType=numberDecimal which is not really helpful.

Thank you very much

PS: I do not need any decimal places

Answer 1

if you want use in currency add addTextChangedListener to your desired edittext then monitor changes and reformat it , here is sample code

private String current = "";
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
    if(!s.toString().equals(current)){
       [your_edittext].removeTextChangedListener(this);

       String cleanString = s.toString().replaceAll("[$,.]", "");

       double parsed = Double.parseDouble(cleanString);
       String formatted = NumberFormat.getCurrencyInstance().format((parsed/100));

       current = formatted;
       [your_edittext].setText(formatted);
       [your_edittext].setSelection(formatted.length());

       [your_edittext].addTextChangedListener(this);
    }
}

Answer 2

You could implement one or more InputFilter s to enforce those constraints on your EditText . It is possible to attach multiple filters on an EditText by using it's setFilters method.

You could also use TextWatcher s to achieve the same thing. However, using InputFilter makes a little bit more sense as it allows you to alter the text without having to call the setText method after each change you make in the input.

Answer 3

For your first problem follow this link Thousand separator

For your second problem add this to your editext

android:digits="0123456789"
android:inputType="numberDecimal"

And for your third problem you have to use TextWatcher like this

editText1.addTextChangedListener(new TextWatcher(){
    public void onTextChanged(CharSequence s, int start, int before, int count)
    {
        if (editText1.getText().toString().matches("^0") )
        {
            // Not allowed
            Toast.makeText(context, "not allowed", Toast.LENGTH_LONG).show();
            editText1.setText("");
        }
    }
    @Override
    public void afterTextChanged(Editable arg0) { }
    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
});