Android银行卡、手机号、身份证格式化。不支持从中间删除，如果有人愿意完善一下，麻烦联系我，感谢。下载代码
```
public class SpaceTextWatcherimplements TextWatcher {
/**
* 改变之前text空格数量
*/
int spaceNumberA =0;
/**
* text改变之前的长度
*/
private int beforeTextLength =0;
private int onTextLength =0;
private boolean isChanged =false;
private StringBufferbuffer =new StringBuffer();
private EditTexteditText;
/**
* text最大长度限制
*/
private int maxLenght;
private SpaceTypespaceType;
/**
* 记录光标的位置
*/
private int location =0;
/**
* 是否是主动设置text
*/
private boolean isSetText =false;
public SpaceTextWatcher(EditText editText, int maxLenght) {
this.editText = editText;
this.maxLenght = maxLenght;
if (editText ==null) {
new NullPointerException("editText is null");
}
spaceType = SpaceType.defaultType;
// if(maxLenght==48){
// spaceType = SpaceType.bankCardNumberType;
// }else if(maxLenght==13){
// spaceType = SpaceType.mobilePhoneNumberType;
// }else if(maxLenght == 21){
// spaceType = SpaceType.IDCardNumberType;
// }
editText.setFilters(new InputFilter[]{new InputFilter.LengthFilter(
maxLenght)});
editText.addTextChangedListener(this);
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
beforeTextLength = s.length();
if (buffer.length() >0) {
buffer.delete(0, buffer.length());
}
spaceNumberA =0;
for (int i =0; i < s.length(); i++) {
if (s.charAt(i) ==' ') {
spaceNumberA++;
}
}
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
onTextLength = s.length();
buffer.append(s.toString());
if (onTextLength ==beforeTextLength ||onTextLength >maxLenght
||isChanged) {
isChanged =false;
return;
}
isChanged =true;
}
@Override
public void afterTextChanged(Editable s) {
if (isChanged) {
location =editText.getSelectionEnd();
// ToastUtils.showToastCenter("=="+editText.getSelectionEnd());
int index =0;
while (index
if (buffer.charAt(index) ==' ') {
buffer.deleteCharAt(index);
}else {
index++;
}
}
index =0;
int spaceNumberB =0;
while (index
spaceNumberB = insertSpace(index, spaceNumberB);
index++;
}
String str =buffer.toString();
// 下面是计算光位置的
if (spaceNumberB >spaceNumberA) {
// ToastUtils.showToastCenter("插入空格了");
location += (spaceNumberB -spaceNumberA);
spaceNumberA = spaceNumberB;
}
if (isSetText) {//ss
location = str.length();
isSetText =false;
}else if (location > str.length()) {
location = str.length();
}else if (location <0) {
location =0;
}
updateContext(s, str);
isChanged =false;
}
}
/**
* 更新编辑框中的内容
*
* @param editable
* @param values
*/
private void updateContext(Editable editable, String values) {
if (spaceType == SpaceType.IDCardNumberType||spaceType == SpaceType.mobilePhoneNumberType||spaceType == SpaceType.bankCardNumberType) {
editable.replace(0, editable.length(), values);
}else {
editText.setText(values);
try {
editText.setSelection(location);
}catch (Exception e) {
e.printStackTrace();
}
}
}
/**
* 根据类型插入空格
*
* @param index
* @param spaceNumberAfter
* @return
* @see [类、类#方法、类#成员]
*/
private int insertSpace(int index, int spaceNumberAfter) {
switch (spaceType) {
case defaultType:// 相隔四位空格
if (index >=4
&& (index % (4 * (spaceNumberAfter +1)) == spaceNumberAfter)) {
buffer.insert(index, ' ');
spaceNumberAfter++;
}
break;
case bankCardNumberType:
if (index >=4
&& (index % (4 * (spaceNumberAfter +1)) == spaceNumberAfter)) {
buffer.insert(index, ' ');
spaceNumberAfter++;
}
break;
case mobilePhoneNumberType:
if (index ==3
|| ((index >7) && ((index -3) % (4 * spaceNumberAfter) == spaceNumberAfter))) {
buffer.insert(index, ' ');
spaceNumberAfter++;
}
break;
case IDCardNumberType:
if (index ==6
|| ((index >10) && ((index -6) % (4 * spaceNumberAfter) == spaceNumberAfter))) {
buffer.insert(index, ' ');
spaceNumberAfter++;
}
break;
default:
if (index >3
&& (index % (4 * (spaceNumberAfter +1)) == spaceNumberAfter)) {
buffer.insert(index, ' ');
spaceNumberAfter++;
}
break;
}
return spaceNumberAfter;
}
/***
* 计算需要的空格数
*
* @return 返回添加空格后的字符串长度
* @see [类、类#方法、类#成员]
*/
private int computeSpaceCount(CharSequence charSequence) {
buffer.delete(0, buffer.length());
buffer.append(charSequence.toString());
int index =0;
int spaceNumberB =0;
while (index
spaceNumberB = insertSpace(index, spaceNumberB);
index++;
}
buffer.delete(0, buffer.length());
return index;
}
/**
* 设置空格类型
*
* @param spaceType
* @see [类、类#方法、类#成员]
*/
public void setSpaceType(SpaceType spaceType) {
this.spaceType = spaceType;
if (this.spaceType == SpaceType.IDCardNumberType) {
editText.setInputType(InputType.TYPE_CLASS_TEXT);
}else if (this.spaceType == SpaceType.bankCardNumberType) {
editText.setInputType(InputType.TYPE_CLASS_TEXT);
}else if (this.spaceType == SpaceType.mobilePhoneNumberType) {
editText.setInputType(InputType.TYPE_CLASS_PHONE);
}
}
/**
* 设置输入字符
*
* @param charSequence
* @return 返回设置成功失败
* @see [类、类#方法、类#成员]
*/
public boolean setText(CharSequence charSequence) {
if (editText !=null && !TextUtils.isEmpty(charSequence) && computeSpaceCount(charSequence) <=maxLenght) {
isSetText =true;
editText.removeTextChangedListener(this);
editText.setText(charSequence);
editText.addTextChangedListener(this);
return true;
}
return false;
}
/**
* 得到输入的字符串去空格后的字符串
*
* @return
* @see [类、类#方法、类#成员]
*/
public StringgetTextNotSpace() {
if (editText !=null) {
return delSpace(editText.getText().toString());
}
return null;
}
/**
* 得到输入的字符串去空格后的长度
*
* @return
* @see [类、类#方法、类#成员]
*/
public int getLenghtNotSpace() {
if (editText !=null) {
return getTextNotSpace().length();
}
return 0;
}
/**
* 得到空格数量
*
* @return
* @see [类、类#方法、类#成员]
*/
public int getSpaceCount() {
return spaceNumberA;
}
/**
* 去掉字符空格，换行符等
*
* @param str
* @return
* @see [类、类#方法、类#成员]
*/
private StringdelSpace(String str) {
if (str !=null) {
str = str.replaceAll("\r", "");
str = str.replaceAll("\n", "");
str = str.replace(" ", "");
}
return str;
}
/**
* 空格类型
*
* @author 江钰锋 0152
* @version [版本号, 2015年4月21日]
* @see [相关类/方法]
* @since [产品/模块版本]
*/
public enum SpaceType {
/**
* 默认类型
*/
defaultType,
/**
* 银行卡类型
*/
bankCardNumberType,
/**
* 手机号类型
*/
mobilePhoneNumberType,
/**
* 身份证类型
*/
IDCardNumberType;
}
}
```
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