当用户在EditText上输入数字时，Android格式的值货币

Question

我正在尝试格式化在EditText输入的值，这必须立即发生，即，一旦用户在EditText输入值，应用程序就必须格式化该值并将其再次设置为EditText 。 我的代码不正确，我找不到按时格式化数字的任何方法

transfer_amount.addTextChangedListener(new TextWatcher() {
    @Override
    public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
    }
    @Override
    public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
    }
    @Override
    public void afterTextChanged(Editable charSequence) {
        if (charSequence.toString().length() == 1 && charSequence.toString().equals("0")) {
            transfer_amount.setText("");
        } else if (charSequence.toString().length() > 0 && (int) charSequence.toString().charAt(0) >= 48 && (int) charSequence.toString().charAt(0) <= 57) {
            Locale swedish = new Locale("sv", "SE");
            NumberFormat swedishFormat = NumberFormat.getCurrencyInstance(swedish);
            transfer_amount.setText(swedishFormat.format(Long.parseLong((charSequence.toString()))));
        }
    }
});

更新

public void onTextChanged(CharSequence s, int start, int before, int count) {
    long enteredNumber = Long.parseLong(s.toString().replace(",", ""));
    transfer_amount.removeTextChangedListener(this);
    DecimalFormat formatter           = new DecimalFormat("#,###,###");
    String        yourFormattedString = formatter.format(enteredNumber);
    Log.e("yourFormattedString ", yourFormattedString);
    transfer_amount.setText(yourFormattedString);
    transfer_amount.addTextChangedListener(this);
}

此代码将一直工作到格式编号，当格式化了我的EditText时，我不知道是什么问题，

我的日志：

E/yourFormattedString: 1
E/yourFormattedString: 11
E/yourFormattedString: 111
E/yourFormattedString: 1,111
E/yourFormattedString: 1

Answer 1

对于文本更改运行时，您需要注意原始字符串和修改后的字符串。

tt = new TextWatcher() {
        public void afterTextChanged(Editable s) {
            if(s.length()!=0) {
                long enteredNumber = Long.parseLong(s.toString().replace(",", ""));
                nameEdit.removeTextChangedListener(this);
                DecimalFormat formatter = new DecimalFormat("#,###,###");
                String yourFormattedString = formatter.format(enteredNumber);
                Log.e("yourFormattedString ", yourFormattedString);
                nameEdit.setText(yourFormattedString);
                nameEdit.addTextChangedListener(this);
                nameEdit.setSelection(yourFormattedString.length());
            }
        }

        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        public void onTextChanged(CharSequence s, int start, int before, int count) {

        }
    };
    nameEdit.addTextChangedListener(tt);