AsyncTask to String()方法不起作用

Question

我正试图在AsyncTask类内的AWS SimpleDB中创建一个域，但每次执行时应用程序都会崩溃。它工作和崩溃的代码片段如下：

这项工作：

   protected Void doInBackground(Param... params) {
            private static final String APP_DOMAIN = "Domain1";
            AWSCredentials credentials = new BasicAWSCredentials(Constants.ACCESS_KEY_ID, Constants.SECRET_KEY);
            this.sdbClient = new AmazonSimpleDBClient(credentials);
            CreateDomainRequest cdr = new CreateDomainRequest(APP_DOMAIN);
            this.sdbClient.createDomain(cdr);
}

但是，当我想将日期字符串添加到域名时，应用程序崩溃了：

    protected Void doInBackground(Param... params) {
        static Date dt = new Date();
        private static final String APP_DOMAIN = "Domain1"+dt.toString();
        AWSCredentials credentials = new BasicAWSCredentials(Constants.ACCESS_KEY_ID, Constants.SECRET_KEY);
        this.sdbClient = new AmazonSimpleDBClient(credentials);
        CreateDomainRequest cdr = new CreateDomainRequest(APP_DOMAIN);
        this.sdbClient.createDomain(cdr);
}

我在这里做错了什么？是AsyncTask不能将Date对象传递给它吗？

Answer 1

我想问题是你正在发送"domain1Fri Feb 20 22:50:07 EET 2015"作为域名，不可能有空白。