我可能会迟到，但这可能会对别人有帮助！

    AsyncTask<Void, Void, String> task = new AsyncTask<Void, Void, String>() {
        @Override
        protected String doInBackground(Void... params) {
            AdvertisingIdClient.Info idInfo = null;
            try {
                idInfo = AdvertisingIdClient.getAdvertisingIdInfo(getApplicationContext());
            } catch (GooglePlayServicesNotAvailableException e) {
                e.printStackTrace();
            } catch (GooglePlayServicesRepairableException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            String advertId = null;
                advertId = idInfo.getId();
            }catch (NullPointerException e){
                e.printStackTrace();
            return advertId;
        @Override
        protected void onPostExecute(String advertId) {
            Toast.makeText(getApplicationContext(), advertId, Toast.LENGTH_SHORT).show();
    task.execute();

从后台线程获取广告id：

    AsyncTask.execute(new Runnable() {
        @Override
        public void run() {
            try {
                AdvertisingIdClient.Info adInfo = AdvertisingIdClient.getAdvertisingIdInfo(mContext);
                String adId = adInfo != null ? adInfo.getId() : null;
                // Use the advertising id
            } catch (IOException | GooglePlayServicesRepairableException | GooglePlayServicesNotAvailableException exception) {
                // Error handling if needed
    });

我添加了 null 检查以防止任何崩溃。如果发生异常，Google example implementation 代码将使用 NullPointerException 崩溃。

如果有人有兴趣在Rx-ing时尝试获取 AdvertisingId 部件，那么这可能会有所帮助。

private void fetchAndDoSomethingWithAdId() {
    Observable.fromCallable(new Callable<String>() {
        @Override
        public String call() throws Exception {
            return AdvertisingIdClient.getAdvertisingIdInfo(context).getId();
              .subscribeOn(Schedulers.io())
              .observeOn(AndroidSchedulers.mainThread())
              .subscribe(new Action1<String>() {
                  @Override
                  public void call(String id) {
                     //do what you want to do with id for e.g using it for tracking
              }, new Action1<Throwable>() {