我已经完成了已经提出的问题，但它们都不是我问题的解决方案。
在运行了一些程序之后，我猜想一旦我们开始处理所需的节点，我们就不能跳过 xml 数据处理中的任何标签..（在这个代码片段中，我也发生了同样的情况）
我的代码是：
private List<Post> readFeed(XmlPullParser parser) throws XmlPullParserException, IOException{
parser.require(XmlPullParser.START_TAG, null, "rss");
String title = new String();
String link = new String();
List<Post> posts = new ArrayList<Post>();
Post post ;
while(parser.next() != XmlPullParser.END_DOCUMENT) {
// Log.d("tag name", parser.getName());
if((parser.getEventType() == XmlPullParser.START_TAG) && parser.getName().equalsIgnoreCase("item")){
Log.d("xml","reached to item");
while((parser.nextTag() != XmlPullParser.END_TAG) && !parser.getName().equalsIgnoreCase("item")){
// Log.d("tag name", parser.getName());
if(parser.getEventType() != XmlPullParser.START_TAG){
continue;
}
String name = parser.getName();
if(name.equalsIgnoreCase("title")){
title = readTitle(parser);
Log.d("title", title);
}else if(name.equalsIgnoreCase("link")){
link = readLink(parser);
Log.d("link", link);
}else if(name.equalsIgnoreCase("comments")){
Log.d("pubdate","parsed");
}else {
Log.d("xml", "beofre skip");
if(parser.getEventType()== XmlPullParser.START_TAG){
Log.d("xml", "true strt");
}
skip(parser);
}
Log.d("xml", "inside item tag..");
}
if(!title.isEmpty() && !link.isEmpty()){
Log.d("xml ", "addig to list");
posts.add(new Post(title, link));
Log.d("xml ", "addig to list");
title = new String();
Log.d("xml ", "addig to list");
link = new String();
}
}else{
Log.d("xml", " in else");
continue;
}
/*if (parser.getEventType() == XmlPullParser.START_DOCUMENT) {
Log.d("start doc", parser.getName());
} else if (parser.getEventType() == XmlPullParser.START_TAG) {
Log.d("start tag", parser.getName());
} else if (parser.getEventType() == XmlPullParser.END_TAG) {
Log.d("end tag", parser.getName());
}*/
}
return posts;
}
private String readLink(XmlPullParser parser) throws XmlPullParserException,IOException{
parser.require(XmlPullParser.START_TAG, null , "link");
String link = parser.nextText(); //readText(parser);
parser.require(XmlPullParser.END_TAG, ns, "link");
Log.d("xml", "read linkkk");
return link;
}
private String readTitle(XmlPullParser parser) throws XmlPullParserException, IOException{
parser.require(XmlPullParser.START_TAG, null, "title");
String title = parser.nextText(); //readText(parser);
parser.require(XmlPullParser.END_TAG, null, "title");
Log.d("xml", "read titile");
return title;
}
//for text extraction
private String readText(XmlPullParser parser) throws IOException, XmlPullParserException{
String result ="";
if(parser.next() == XmlPullParser.TEXT){
result = parser.getText();
parser.nextTag();
}
return result;
}
private void skip(XmlPullParser parser) throws XmlPullParserException, IOException {
if (parser.getEventType() != XmlPullParser.START_TAG) {
Log.d("xml", "not starting tag");
throw new IllegalStateException();
}
int depth = 1;
while (depth != 0) {
switch (parser.next()) {
case XmlPullParser.END_TAG:
depth--;
break;
case XmlPullParser.START_TAG:
depth++;
break;
}
}
}
这是该程序的堆栈跟踪：
11-20 13:59:01.736 2305-8026/example.harpreet D/feedparser: in parser method
11-20 13:59:01.756 2305-8026/example.harpreet D/new tag: from live input stream
11-20 13:59:04.359 2305-8026/example.harpreet D/xml: in else
11-20 13:59:04.359 2305-8026/example.harpreet D/xml: in else
(i skipped these " in else" stacktrace line for more clarity
11-20 13:59:04.359 2305-8026/example.harpreet D/xml: reached to item
11-20 13:59:04.359 2305-8026/example.harpreet D/xml: read titile
11-20 13:59:04.359 2305-8026/example.harpreet D/title: MacBook Webcams can be used to covertly spy on people — With proof
11-20 13:59:04.359 2305-8026/example.harpreet D/xml: inside item tag..
11-20 13:59:04.359 2305-8026/example.harpreet D/xml: read linkkk
11-20 13:59:04.359 2305-8026/example.harpreet D/link: https://hack4friends.wordpress.com/2013/12/23/macbook-webcams-can-be-used-to-covertly-spy-on-people-with-proof/
11-20 13:59:04.359 2305-8026/example.harpreet D/xml: inside item tag..
11-20 13:59:04.359 2305-8026/example.harpreet D/pubdate: parsed
11-20 13:59:04.369 2305-8026/example.harpreet D/xml: inside item tag..
11-20 13:59:04.369 2305-8026/example.harpreet D/xml parse: org.xmlpull.v1.XmlPullParserException: unexpected type (position:TEXT https://hack4fri...@32:132 in java.io.InputStreamReader@41b71e18)
11-20 13:59:04.369 2305-8026/example.harpreet D/download service: status sending
11-20 13:59:04.379 2305-8026/example.harpreet D/DownloadService: Service stopped
您还可以从此链接查看 xml 提要 = https://hack4friends.wordpress.com/feed/ 以供参考