Question

我想在EditText中的每个1,000之间添加逗号，因此用户不必“猜测”它是10,000还是100,000。在EditText中输入数字时，它显示为10000，但我希望将其显示为10,000。怎么办？

Answer 1

您必须将TextChangedListner添加到您的edittext .i.e

          et.addTextChangedListener(new TextWatcher() {

            @Override
            public void onTextChanged(CharSequence s, int start, int before,
                    int count) {
                // TODO Auto-generated method stub

            }

            @Override
            public void beforeTextChanged(CharSequence s, int start, int count,
                    int after) {
                // TODO Auto-generated method stub

            }

            @Override
            public void afterTextChanged(Editable s) {
                et.removeTextChangedListener(this);

                try {
                    String givenstring = s.toString();
                    Long longval;
                    if (givenstring.contains(",")) {
                        givenstring = givenstring.replaceAll(",", "");
                    }
                    longval = Long.parseLong(givenstring);
                    DecimalFormat formatter = new DecimalFormat("#,###,###");
                    String formattedString = formatter.format(longval);
                    et.setText(formattedString);
                    et.setSelection(et.getText().length());
                    // to place the cursor at the end of text
                } catch (NumberFormatException nfe) {
                    nfe.printStackTrace();
                } catch (Exception e) {
                    e.printStackTrace();
                }

                et.addTextChangedListener(this);

            }
        });

注意：确保您的edittext inputtype是数字。即android：inputType =＆＃34; number＆＃34;

Answer 2

使用：

将TextChangedListener附加到EditText

editText.addTextChangedListener();

请参阅以下 TextWatcher 的javadoc： http://developer.android.com/reference/android/text/TextWatcher.html

在Android Studio的EditText中为数字添加逗号作为千位分隔符？

2 个答案: