EditText输入自动空格

package?cn.juzhong.util;

import?android.text.Editable;
import?android.text.Selection;
import?android.text.TextWatcher;
import?android.widget.EditText;

public?class?EditTextUtil?implements?TextWatcher{
????private?int?beforeTextLength?=?0;?//输入前的长度
????private?int?onTextLength?=?0;?//文字的长度
????private?boolean?isChanged?=?false;?
????private?int?location?=?0;//记录光标的位置
????private?char[]?tempChar;?
????private?StringBuffer?buffer?=?new?StringBuffer();?
????private?int?blankNumber?=?0;??
????private?EditText?editText;
????
????public?EditTextUtil(EditText?text){
????????editText?=?text;
????}

????@Override
????public?void?afterTextChanged(Editable?arg0)?{
????????//?TODO?Auto-generated?method?stub
????????if(isChanged){
????????????location?=?editText.getSelectionEnd();
????????????int?index?=?0;
????????????while?(index?<?buffer.length())?{
????????????????if?(buffer.charAt(index)?==?'?')?{
????????????????????buffer.deleteCharAt(index);
????????????????}?else?{
????????????????????index++;
????????????????}
????????????}

????????????index?=?0;
????????????int?konggeNumberC?=?0;
????????????while?(index?<?buffer.length())?{
????????????????if?((index?==?4?||?index?==?9?||?index?==?14?||?index?==?19))?{
????????????????????buffer.insert(index,?'?');
????????????????????konggeNumberC++;
????????????????}
????????????????index++;
????????????}

????????????if?(konggeNumberC?>?blankNumber)?{
????????????????location?+=?(konggeNumberC?-?blankNumber);
????????????}

????????????tempChar?=?new?char[buffer.length()];
????????????buffer.getChars(0,?buffer.length(),?tempChar,?0);
????????????String?str?=?buffer.toString();
????????????if?(location?>?str.length())?{
????????????????location?=?str.length();
????????????}?else?if?(location?<?0)?{
????????????????location?=?0;
????????????}

????????????editText.setText(str);
????????????Editable?etable?=?editText.getText();
????????????Selection.setSelection(etable,?location);
????????????isChanged?=?false;
????????}
????}

????@Override
????public?void?beforeTextChanged(CharSequence?text,?int?arg1,?int?arg2,????????????int?arg3)?{
????????//?TODO?Auto-generated?method?stub
????????beforeTextLength?=?text.length();
????????if(buffer.length()?>?0){
????????????buffer.delete(0,?buffer.length());
????????}
????????
????????blankNumber?=?0;
????????for(int?i?=?0;i?<?text.length();i?++){
????????????if(text.charAt(i)?==?'?'){
????????????????blankNumber?++;
????????????}
????????}
????}

????@Override
????public?void?onTextChanged(CharSequence?text,?int?arg3)?{
????????//?TODO?Auto-generated?method?stub
????????onTextLength?=?text.length();
????????buffer.append(text.toString());
????????if(onTextLength?==?beforeTextLength?||?onTextLength?<=?3
????????????????||?isChanged){
????????????isChanged?=?false;
????????????return;
????????}
????????
????????isChanged?=?true;
????}

}

bankNumberEditText.addTextChangedListener(new?EditTextUtil(bankNumberEditText));