Android 如何在EditText中输入数字时自动添加千个分隔符
我正在创建一个转换器应用程序。我想设置EditText，这样当用户输入要转换的数字时，当数字增加3位数时，应自动实时向数字添加1000个分隔符（Android 如何在EditText中输入数字时自动添加千个分隔符,android,android-layout,android-edittext,android-emulator,number-formatting,Android,Android Layout,Android Edittext,Android Emulator,Number Formatting,我正在创建一个转换器应用程序。我想设置EditText，这样当用户输入要转换的数字时，当数字增加3位数时，应自动实时向数字添加1000个分隔符（，）：千、百万、十亿等。 当删除到4位数以下时，数字将恢复正常。 有什么帮助吗？您可以使用String.format（）格式说明符中的逗号起作用。 import android.text.Editable; import android.text.TextWatcher; import android.widget.EditTex
，当删除到4位数以下时，数字将恢复正常。
有什么帮助吗？您可以使用
String.format（）格式说明符中的逗号起作用。
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
这不适用于浮点输入。注意不要在TextWatcher中设置无限循环
public void afterTextChanged(Editable view) {
String s = null;
try {
// The comma in the format specifier does the trick
s = String.format("%,d", Long.parseLong(view.toString()));
} catch (NumberFormatException e) {
}
// Set s back to the view after temporarily removing the text change listener
}
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
因为我有同样的问题，我决定找到解决办法
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
在下面找到我的函数我希望它能帮助人们找到解决方案
securityDeposit.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 before, int count) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
if (s.toString().trim().length() > 0) {
int rentValue = Integer.parseInt(s.toString()
.replaceAll(",", ""));
StringBuffer rentVal = new StringBuffer();
if (rentValue > 10000000) {
s.clear();
s.append("10,000,000");
} else {
if (s.length() == 4) {
char x[] = s.toString().toCharArray();
char y[] = new char[x.length + 1];
for (int z = 0; z < y.length; z++) {
if (z == 1) {
y[1] = ',';
} else {
if (z == 0)
y[z] = x[z];
else {
y[z] = x[z - 1];
}
}
}
for (int z = 0; z < y.length; z++) {
rentVal = rentVal.append(y[z]);
}
s.clear();
s.append(rentVal);
}
}
}
}
});
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
securityDeposit.addTextChangedListener（新的TextWatcher（）{
@凌驾
public void onTextChanged（字符序列，int start，
前整数，整数计数）{
//TODO自动生成的方法存根
}
@凌驾
更改前的公共无效（字符序列、整数开始、，
前整数，整数计数）{
//TODO自动生成的方法存根
}
@凌驾
公共无效后文本已更改（可编辑）{
//TODO自动生成的方法存根
如果（s.toString（）.trim（）.length（）>0）{
int rentValue=Integer.parseInt（s.toString（）
.replaceAll（“，”，“）；
StringBuffer rentVal=新的StringBuffer（）；
如果（租金值>10000000）{
s、 清除（）；
s、 追加（“10000000”）；
}否则{
如果（s.长度（）==4）{
char x[]=s.toString（）.tocharray（）；
字符y[]=新字符[x.length+1]；
对于（intz=0；z
公共静态字符串doubleToStringNoDecimal（双d）{
DecimalFormat格式化程序=（DecimalFormat）NumberFormat.getInstance（Locale.US）；
formatter.applyPattern（“#，#，###”）；
返回格式化程序。格式（d）；
}
终于解决了这个问题
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
即使现在回答已经太晚了。为了完成这项任务，我做了大量的研究，以获得正确的结果，但未能成功。因此，我最终解决了我们正在搜索的问题，并向谷歌搜索者提供了这个答案，以节省他们的搜索时间
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
以下代码的特征
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
当文本更改时，在EditText
中放置千位分隔符
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
首次按下句点（.）时自动添加0.
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
忽略开头的0
输入
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
只需复制以下内容
名为
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
numbertextWatcherOrthousand哪个实现TextWatcher
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.util.StringTokenizer;
/**
* Created by skb on 12/14/2015.
*/
public class NumberTextWatcherForThousand implements TextWatcher {
EditText editText;
public NumberTextWatcherForThousand(EditText editText) {
this.editText = editText;
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
try
{
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals(""))
{
if(value.startsWith(".")){
editText.setText("0.");
}
if(value.startsWith("0") && !value.startsWith("0.")){
editText.setText("");
}
String str = editText.getText().toString().replaceAll(",", "");
if (!value.equals(""))
editText.setText(getDecimalFormattedString(str));
editText.setSelection(editText.getText().toString().length());
}
editText.addTextChangedListener(this);
return;
}
catch (Exception ex)
{
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
public static String getDecimalFormattedString(String value)
{
StringTokenizer lst = new StringTokenizer(value, ".");
String str1 = value;
String str2 = "";
if (lst.countTokens() > 1)
{
str1 = lst.nextToken();
str2 = lst.nextToken();
}
String str3 = "";
int i = 0;
int j = -1 + str1.length();
if (str1.charAt( -1 + str1.length()) == '.')
{
j--;
str3 = ".";
}
for (int k = j;; k--)
{
if (k < 0)
{
if (str2.length() > 0)
str3 = str3 + "." + str2;
return str3;
}
if (i == 3)
{
str3 = "," + str3;
i = 0;
}
str3 = str1.charAt(k) + str3;
i++;
}
}
public static String trimCommaOfString(String string) {
// String returnString;
if(string.contains(",")){
return string.replace(",","");}
else {
return string;
}
}
}
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
以纯双文本形式获取输入
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
像这样使用同一类的trimCommaOfString
方法
NumberTextWatcherForThousand.trimCommaOfString(editText.getText().toString())
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
您可以在程序中以多种方式使用此代码，您给它一个字符串，它将三个代码从右侧分开，并在其中放置空格
private String Spacer(String number){
StringBuilder strB = new StringBuilder();
strB.append(number);
int Three = 0;
for(int i=number.length();i>0;i--){
Three++;
if(Three == 3){
strB.insert(i-1, " ");
Three = 0;
}
}
return strB.toString();
}// end Spacer()
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
您可以稍微更改它，并在ContextChangeListener上使用它。
祝你好运这将清晰地解构格式数字
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
要总结上面的链接，请使用TextWatcher
，并在postTextChanged（）
方法中使用以下逻辑格式化EditText
视图：
@Override
public void afterTextChanged(Editable s) {
editText.removeTextChangedListener(this);
try {
String originalString = s.toString();
Long longval;
if (originalString.contains(",")) {
originalString = originalString.replaceAll(",", "");
}
longval = Long.parseLong(originalString);
DecimalFormat formatter = (DecimalFormat) NumberFormat.getInstance(Locale.US);
formatter.applyPattern("#,###,###,###");
String formattedString = formatter.format(longval);
//setting text after format to EditText
editText.setText(formattedString);
editText.setSelection(editText.getText().length());
} catch (NumberFormatException nfe) {
nfe.printStackTrace();
}
editText.addTextChangedListener(this);
}
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
这个解决方案比其他答案有一些优势。例如，即使用户编辑数字的开头或中间，它也会保持光标的位置。其他解决方案总是将光标跳到数字的末尾。它处理小数和整数，以及使用除
字符以外的字符作为小数分隔符和，
字符作为千分组分隔符的区域设置
class SeparateThousands(val groupingSeparator: String, val decimalSeparator: String) : TextWatcher {
private var busy = false
override fun afterTextChanged(s: Editable?) {
if (s != null && !busy) {
busy = true
var place = 0
val decimalPointIndex = s.indexOf(decimalSeparator)
var i = if (decimalPointIndex == -1) {
s.length - 1
} else {
decimalPointIndex - 1
}
while (i >= 0) {
val c = s[i]
if (c == groupingSeparator[0] ) {
s.delete(i, i + 1)
} else {
if (place % 3 == 0 && place != 0) {
// insert a comma to the left of every 3rd digit (counting from right to
// left) unless it's the leftmost digit
s.insert(i + 1, groupingSeparator)
}
place++
}
i--
}
busy = false
}
}
override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {
}
override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
}
}
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
然后在xml中：
<EditText
android:id="@+id/myNumberField"
android:digits=",.0123456789"
android:inputType="numberDecimal"
.../>
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
处理。vs，在不同的语言环境中使用groupingSeparator和decimalSeparator，它们可以来自十进制符号或本地化字符串。这是我的MilliandNumberEditText
类
public class ThousandNumberEditText extends android.support.v7.widget.AppCompatEditText {
// TODO: 14/09/2017 change it if you want
private static final int MAX_LENGTH = 20;
private static final int MAX_DECIMAL = 3;
public ThousandNumberEditText(Context context) {
this(context, null);
}
public ThousandNumberEditText(Context context, AttributeSet attrs) {
this(context, attrs, android.support.v7.appcompat.R.attr.editTextStyle);
}
public ThousandNumberEditText(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init();
}
private void init() {
addTextChangedListener(new ThousandNumberTextWatcher(this));
setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_DECIMAL);
setFilters(new InputFilter[] { new InputFilter.LengthFilter(MAX_LENGTH) });
setHint("0"); // TODO: 14/09/2017 change it if you want
}
private static class ThousandNumberTextWatcher implements TextWatcher {
private EditText mEditText;
ThousandNumberTextWatcher(EditText editText) {
mEditText = editText;
}
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void afterTextChanged(Editable editable) {
String originalString = editable.toString();
String cleanString = originalString.replaceAll("[,]", "");
if (cleanString.isEmpty()) {
return;
}
String formattedString = getFormatString(cleanString);
mEditText.removeTextChangedListener(this);
mEditText.setText(formattedString);
mEditText.setSelection(mEditText.getText().length());
mEditText.addTextChangedListener(this);
}
/**
* Return the format string
*/
private String getFormatString(String cleanString) {
if (cleanString.contains(".")) {
return formatDecimal(cleanString);
} else {
return formatInteger(cleanString);
}
}
private String formatInteger(String str) {
BigDecimal parsed = new BigDecimal(str);
DecimalFormat formatter;
formatter = new DecimalFormat("#,###");
return formatter.format(parsed);
}
private String formatDecimal(String str) {
if (str.equals(".")) {
return ".";
}
BigDecimal parsed = new BigDecimal(str);
DecimalFormat formatter;
formatter =
new DecimalFormat("#,###." + getDecimalPattern(str)); //example patter #,###.00
return formatter.format(parsed);
}
/**
* It will return suitable pattern for format decimal
* For example: 10.2 -> return 0 | 10.23 -> return 00 | 10.235 -> return 000
*/
private String getDecimalPattern(String str) {
int decimalCount = str.length() - 1 - str.indexOf(".");
StringBuilder decimalPattern = new StringBuilder();
for (int i = 0; i < decimalCount && i < MAX_DECIMAL; i++) {
decimalPattern.append("0");
}
return decimalPattern.toString();
}
}
}
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import java.text.DecimalFormat;
/**
* Created by srv_twry on 4/12/17.
* Source: https://stackoverflow.com/a/34265406/137744
* The custom TextWatcher that automatically adds thousand separators in EditText.
*/
public class ThousandSeparatorTextWatcher implements TextWatcher {
private DecimalFormat df;
private EditText editText;
private static String thousandSeparator;
private static String decimalMarker;
private int cursorPosition;
public ThousandSeparatorTextWatcher(EditText editText) {
this.editText = editText;
df = new DecimalFormat("#,###.##");
df.setDecimalSeparatorAlwaysShown(true);
thousandSeparator = Character.toString(df.getDecimalFormatSymbols().getGroupingSeparator());
decimalMarker = Character.toString(df.getDecimalFormatSymbols().getDecimalSeparator());
}
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
cursorPosition = editText.getText().toString().length() - editText.getSelectionStart();
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void afterTextChanged(Editable s) {
try {
editText.removeTextChangedListener(this);
String value = editText.getText().toString();
if (value != null && !value.equals("")) {
if (value.startsWith(decimalMarker)) {
String text = "0" + decimalMarker;
editText.setText(text);
}
if (value.startsWith("0") && !value.startsWith("0" + decimalMarker)) {
int index = 0;
while (index < value.length() && value.charAt(index) == '0') {
index++;
}
String newValue = Character.toString(value.charAt(0));
if (index != 0) {
newValue = value.charAt(0) + value.substring(index);
}
editText.setText(newValue);
}
String str = editText.getText().toString().replaceAll(thousandSeparator, "");
if (!value.equals("")) {
editText.setText(getDecimalFormattedString(str));
}
editText.setSelection(editText.getText().toString().length());
}
//setting the cursor back to where it was
editText.setSelection(editText.getText().toString().length() - cursorPosition);
editText.addTextChangedListener(this);
} catch (Exception ex) {
ex.printStackTrace();
editText.addTextChangedListener(this);
}
}
private static String getDecimalFormattedString(String value) {
String[] splitValue = value.split("\\.");
String beforeDecimal = value;
String afterDecimal = null;
String finalResult = "";
if (splitValue.length == 2) {
beforeDecimal = splitValue[0];
afterDecimal = splitValue[1];
}
int count = 0;
for (int i = beforeDecimal.length() - 1; i >= 0 ; i--) {
finalResult = beforeDecimal.charAt(i) + finalResult;
count++;
if (count == 3 && i > 0) {
finalResult = thousandSeparator + finalResult;
count = 0;
}
}
if (afterDecimal != null) {
finalResult = finalResult + decimalMarker + afterDecimal;
}
return finalResult;
}
/*
* Returns the string after removing all the thousands separators.
* */
public static String getOriginalString(String string) {
return string.replace(thousandSeparator,"");
}
}
public类thounandnumberedittext扩展了android.support.v7.widget.appcompatittext{
//TODO:14/09/2017如果你想更改它
专用静态最终整数最大长度=20；
私有静态最终整数MAX_DECIMAL=3；
公共千位数文本（上下文）{
这个（上下文，空）；
}
公共千位数属性文本（上下文上下文，属性集属性）{
这（context、attrs、android.support.v7.appcompat.R.attr.editTextStyle）；
}
公共千位数属性文本（上下文上下文、属性集属性、int-defStyleAttr）{
super（上下文、attrs、defStyleAttr）；
init（）；
}
私有void init（）{
addTextChangedListener（新的千位数ExtWatcher（本））；
setInputType（InputType.TYPE_类别_编号| InputType.TYPE_编号_标志_小数）；
setFilters（新的InputFilter[]{new InputFilter.LengthFilter（最大长度）}）；