rxjava-无限重复定时任务

private void (final long delay) {
  
	
    if (subscribe != null) {
        subscribe.unsubscribe();
        subscribe = null;
    }
  
    subscribe = Observable.timer(delay, TimeUnit.MILLISECONDS)
            .flatMap(new Func1<Long, Observable<GetSomeThingResult>>() {
                
                public Observable<GetSomeThingResult> call(Long aLong) {
                	//接口调用
                    return Api.getDefaultApi().getSomeThing();
                }
            })
            .observeOn(AndroidSchedulers.mainThread())
            .subscribeOn(Schedulers.io())
            .subscribe(new Subscriber<GetSomeThingResult>() {
                
                public void onCompleted() {
  
                }
  
                
                public void onError(Throwable e) {
                    ToastUtils.showCustomBgToast(getString(R.string.no_net_text) + e.toString());
                    getAllDatas(Constants.AUTO_REFRESH_DURATION);
                }
  
                
                public void onNext(GetSomeThingResult result) {
                	//... do some thing with data
  
                    getAllDatas(Constants.AUTO_REFRESH_DURATION);
                }
            });
  
}

protected void onDestroy() {
    super.onDestroy();
    try {
        if (subscribe != null && !subscribe.isUnsubscribed()) {
            subscribe.unsubscribe();
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}