当Activity onPause（）时取消AsyncTask

Question

我在活动中启动了一个AsyncTask ..服务器的任务请求检查用户信息是否经过验证。除非服务器返回user_validated或手动取消，否则此任务将永久运行。

这里是doInBackground（）代码：

    @Override
    protected ApiResult doInBackground(Context... objects) {
        AccountState accountState = AccountState.getInstance();
        ApiResult result = null;
        boolean isEmailValidated = false;

        while (!isEmailValidated) {
            if (isCancelled()) break;

            result = new MyApi().emailValidated(accountState.getAccessToken());

            if (result != null) {
                MyApi.EmailValidatedResult emailValidatedResult =
                        MyApi.parseEmailValidatedResult(result.getResponse());
                if (emailValidatedResult != null && emailValidatedResult.getValidated()) {
                    isEmailValidated = true;

                } else {
                    // token is not valid, sleep for RETRY_DELAY and try again
                    try {
                        Thread.sleep(RETRY_DELAY);
                    } catch (InterruptedException e) {
                        MyLogger.e(e, "Sleep between retry attempts threw InterruptedException!");
                    }
                }

            } else {
                MyLogger.d("email_validated returned null");
            }
        }
        return result;
    }

由于此任务将继续重试，我希望它仅在Activity可见时运行。所以我试图在Activity onPause（）时取消任务：

@Override
public void onPause() {
    super.onPause();
    if (mCurrentTask != null) {
        mCurrentTask.cancel(true);
        mCurrentTask = null;
    }
}

问题是..如果在执行mCurrentTask.cencel(true)时调用Thread.sleep()，则会导致InterruptedException ..我不知道是否可以。以及如何在不抛出异常的情况下很好地处理它。