小数后保留两位小数

public class InputTypeUtlis {
    public static void inputType(EditText edit) {
        edit.setInputType(InputType.TYPE_NUMBER_FLAG_DECIMAL | InputType.TYPE_CLASS_NUMBER);
        edit.setFilters(new InputFilter[]{new InputFilter() {
            @Override
            public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
                if (source.equals(".") && dest.toString().length() == 0) {
                    return "0.";
                }
                if (dest.toString().contains(".")) {
                    int index = dest.toString().indexOf(".");
                    int length = dest.toString().substring(index).length();
                    if (length == 3) {
                        return "";
                    }
                }
                return null;
            }
        }});
    }