安卓 AsyncHttpClient - “Content-Type not allowed!”

使用 http://loopj.com/android-async-http/ 的异步网络请求工具使用BinaryHttpResponseHandler来完成文件下载时总是报错，“org.apache.http.client.HttpResponseException: Content-Type not allowed!”。若缺少某个请求的类型，比如我下载一个jpg文件，只要加上“image/jpg;charset=UTF-8” ，若对于html文件后来加上“text/html;charset=UTF-8” 就解决问题了。完整代码如下：

String[] allowedContentTypes = new String[] { "text/html;charset=UTF-8", "image/jpg;charset=UTF-8"};
String urlStr="your request url";
HttpUtil.get(urlStr, new BinaryHttpResponseHandler(allowedContentTypes) {
public void onSuccess(int i, org.apache.http.Header[] headers, byte[] bytes) {
Log.d("myingwill","ok");

}
public void onFailure(int i, org.apache.http.Header[] headers, byte[] bytes, java.lang.Throwable throwable) {
Log.d("myingwill",throwable.toString());
for (org.apache.http.Header header : headers)
{
Log.i("myingwill", header.getName()+" / "+header.getValue());
}
}
});