@Overridepublic 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++;}}}@Overridepublic 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;}@Overridepublic void afterTextChanged(Editable s) {if (isChanged) {location = editText.getSelectionEnd();int index = 0;while (index < buffer.length()) { // 删掉所有空格if (buffer.charAt(index) == ' ') {buffer.deleteCharAt(index);} else {index++;}}index = 0;int spaceNumberB = 0;while (index < buffer.length()) { // 插入所有空格spaceNumberB = insertSpace(index, spaceNumberB);index++;}String str = buffer.toString();// 下面是计算光位置的if (spaceNumberB > spaceNumberA) {location += (spaceNumberB - spaceNumberA);spaceNumberA = spaceNumberB;}if (isSetText) {location = str.length();isSetText = false;} else if (location > str.length()) {location = str.length();} else if (location < 0) {location = 0;}editText.setText(str);try {editText.setSelection(location);} catch (Exception e) {e.printStackTrace();}isChanged = false;}}/**
     * 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 > 3&& (index % (4 * (spaceNumberAfter + 1)) == spaceNumberAfter)) {buffer.insert(index, ' ');spaceNumberAfter++;}break;case bankCardNumberType:if (index > 3&& (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 < buffer.length()) { // 插入所有空格spaceNumberB = insertSpace(index, spaceNumberB);index++;}buffer.delete(0, buffer.length());return index;}

        AddSpaceTextWatcher[] asEditTexts=new AddSpaceTextWatcher[3];EditText[] editTexts=new EditText[3];editTexts[0]=(EditText)findViewById(R.id.editText);//银行卡editTexts[1]=(EditText)findViewById(R.id.editText2);//手机号editTexts[2]=(EditText)findViewById(R.id.editText3);//身份证asEditTexts[0]=new AddSpaceTextWatcher(editTexts[0],48);//银行卡asEditTexts[0].setSpaceType(AddSpaceTextWatcher.SpaceType.bankCardNumberType);asEditTexts[1]=new AddSpaceTextWatcher(editTexts[1],13);//手机号asEditTexts[1].setSpaceType(AddSpaceTextWatcher.SpaceType.mobilePhoneNumberType);asEditTexts[2]=new AddSpaceTextWatcher(editTexts[2],21);//身份证asEditTexts[2].setSpaceType(AddSpaceTextWatcher.SpaceType.IDCardNumberType);