@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
//参数依次代表的意思：s文本内容，start从第几个字符开始改变，before(自己可以测试一下，我没测试)，count改变的字符个数
// TODO Auto-generated method stub
Log.i("editText", s.toString());
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
Log.i("editText beforeTextChanged", s.toString());
}
@Override
public void afterTextChanged(Editable s) {
Log.i("editText afterTextChanged", s.toString());
// TODO Auto-generated method stub
