Question

**指我有一个带有提示0.00的编辑文本

Now i want to input text  
If i press 5 it should appear 0.05  
next if i press 4 it should come like 0.54**

Answer 1

这是完整的解决方案。试试这个

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 formated = NumberFormat.getCurrencyInstance().format((parsed/100));

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

       [your_edittext].addTextChangedListener(this);
    }
}

Answer 2

这是我的要求的正确答案

public static void decimalFormat(final EditText editText) {

    editText.addTextChangedListener(new TextWatcher() {

        String before = "";

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

        }
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {
            before = s.toString();

        }

        @Override
        public void afterTextChanged(Editable s) {

            if (!before.equalsIgnoreCase(s.toString())
                    && !TextUtils.isEmpty(s.toString().trim())) {
                before = s.toString();
                String tvStr = s.toString();
                if (tvStr.contains("-") || tvStr.equals(".")) {
                    editText.setText("");
                }

                if (!tvStr.equals("") && !tvStr.equals(".")) {
                    String cleanString = getFormatedNumber(tvStr, 2);
                    editText.setText(cleanString);
                    try {
                        editText.setSelection(cleanString.length());

                        return;
                    } catch (IndexOutOfBoundsException e) {
                        editText.setSelection(cleanString.length() - 1);
                        return;
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }

            }

        }

    });
}

public static String getFormatedNumber（String text，int decimalPoint）{

      String cleanString = text.replaceAll("[,.|\\s]", "");
      if (TextUtils.isEmpty(cleanString)) {
       return "0.00";
      }

      NumberFormat formatter = new DecimalFormat("#,##0.00");

      double number = Double.parseDouble(cleanString) / (long) Math.pow(10.0, decimalPoint);
      return formatter.format(number).toString();
     }

如何在Edittext中输入一次从提示中删除一个字符

2 个答案: