private void doReturn() {
    if (getSMSCodeFlg) {
      Dialog dialog =
          new AlertDialog.Builder(this)
              .setTitle("提示")
              .setMessage("验证码已发送,是否放弃当前操作?")
              .setPositiveButton(
                  "确定",
                  new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                      ZnkActivityUtil.finishActivity();
                      dialog.dismiss();
                    }
                  })
              .setNegativeButton(
                  "取消",
                  new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int which) {
                      dialog.dismiss();
                    }
                  })
              .create();

      dialog.show();
    } else {
      ZnkActivityUtil.finishActivity();
    }
  }
 @Override
 public void onFocusChange(View v, boolean hasFocus) {
   ZnkActivityUtil.setVisibility(v.getId(), hasFocus, clearMap);
 }