import android.text.Editable;import android.text.TextWatcher;import android.util.Log;import android.widget.EditText;/** * @desc * @autor Xemenes * @time 2017/5/12 10:18 */public class PhoneNumberTextWatcher implements TextWatcher {  EditText editText;  int lastContentLength = 0;  boolean isDelete = false;  public PhoneNumberTextWatcher(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) {    StringBuffer sb = new StringBuffer(s);    //是否為輸入狀態(tài)    isDelete = s.length() > lastContentLength ? false : true;    //輸入是第4，第9位，這時(shí)需要插入空格    if(!isDelete&& (s.length() == 4||s.length() == 9)){      if(s.length() == 4) {        sb.insert(3, " ");      }else {        sb.insert(8, " ");      }      setContent(sb);    }    //刪除的位置到4，9時(shí)，剔除空格    if (isDelete && (s.length() == 4 || s.length() == 9)) {      sb.deleteCharAt(sb.length() - 1);      setContent(sb);    }    lastContentLength = sb.length();  }  @Override  public void afterTextChanged(Editable s) {  }  /**   * 添加或刪除空格EditText的設(shè)置   *   * @param sb   */  private void setContent(StringBuffer sb) {    editText.setText(sb.toString());    //移動(dòng)光標(biāo)到最后面    editText.setSelection(sb.length());  }}