java - Why does my XML parser not work -

i got following xml file named test2.xml in assets folder:

<?xml version="1.0" encoding="utf-8"?> <map version="1.0" orientation="orthogonal" width="32" height="32" tilewidth="16" tileheight="16">     <tileset firstgid="1" name="terrain" tilewidth="16" tileheight="16">     <image source="terrain.png" width="256" height="256"/> </tileset> <layer name="kachelebene 2" width="32" height="32">     <data encoding="csv">         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,187,187,187,187,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,164,164,164,164,164,164,164,187,187,164,164,187,187,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,164,0,187,187,187,164,164,164,164,187,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,93,93,94,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,93,94,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,93,94,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,92,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,         0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0     </data> </layer> <layer name="kachelebene 1" width="32" height="32">     <data encoding="csv">         3,3,3,164,3,164,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,         3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,         3,3,3,3,3,3,3,3,3,3,36,36,36,36,36,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,         3,3,3,3,3,3,3,36,36,36,3,3,36,36,36,164,36,36,36,36,36,36,36,36,36,36,36,36,3,3,3,3,         3,3,3,3,3,3,3,3,3,36,36,36,3,3,3,164,164,3,3,3,3,3,3,3,3,3,3,3,36,36,36,3,         3,3,3,3,3,3,3,3,36,36,3,3,3,187,164,164,164,164,3,3,3,3,3,3,3,3,3,3,3,3,36,36,         3,3,3,3,3,3,3,36,36,3,3,3,3,3,164,164,187,164,164,164,164,164,3,3,164,164,3,3,3,3,3,3,         3,3,3,3,3,3,36,36,3,3,3,3,3,3,3,164,164,164,164,164,164,164,164,164,164,3,3,3,3,3,3,3,         3,3,3,3,3,3,36,3,3,3,3,3,3,3,3,164,3,164,164,164,164,164,164,3,3,3,3,3,3,3,3,3,         3,3,3,3,3,36,36,3,3,3,3,3,3,3,3,164,164,164,164,164,164,164,164,164,164,164,164,3,3,3,3,3,         3,3,3,3,3,36,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,         3,3,3,3,36,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,3,4,4,4,3,3,3,         3,3,3,36,36,3,3,3,4,4,4,4,4,4,4,4,4,4,207,207,207,207,207,207,207,3,3,3,3,4,3,3,         3,3,36,36,3,3,3,3,4,3,71,207,207,207,207,207,207,207,207,207,207,207,207,207,3,71,3,3,3,4,3,3,         3,36,36,3,3,3,3,3,4,3,71,207,207,207,207,207,207,207,207,207,207,207,3,207,3,71,3,3,3,3,3,3,         3,36,3,3,3,3,3,3,4,3,71,207,207,207,207,207,207,207,207,207,3,3,207,207,3,71,3,3,3,4,4,3,         36,36,3,3,3,3,3,3,4,3,71,207,207,207,207,207,207,207,207,3,207,207,207,207,3,71,3,3,3,3,4,3,         36,3,3,3,3,3,3,3,4,3,71,207,207,207,207,207,207,207,207,207,207,3,207,3,3,71,3,3,3,3,4,3,         36,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,3,         36,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,         36,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,86,3,3,3,3,3,3,3,3,3,3,3,3,3,3,         36,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,86,3,3,3,3,3,3,3,3,3,3,3,3,3,         36,3,3,3,3,3,3,3,36,36,36,3,3,3,3,3,3,3,86,3,3,3,3,3,3,3,3,3,3,3,3,3,         36,3,3,3,3,3,36,36,36,3,3,3,3,3,3,3,3,3,86,3,3,3,3,3,3,3,3,3,3,3,3,3,         36,36,36,36,36,36,3,3,3,3,3,3,3,3,3,3,3,3,86,3,3,3,3,3,3,3,3,3,3,3,3,3,         3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,86,3,3,3,3,3,3,3,3,3,3,3,3,3,         3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,86,3,3,3,3,3,3,3,3,3,3,3,3,3,         3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,86,3,3,3,3,3,3,3,3,3,3,3,3,3,         3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,86,3,3,3,3,3,3,3,3,3,3,3,3,3,         3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,86,3,3,3,3,3,3,3,3,3,3,3,3,3,         3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,86,3,3,3,3,3,3,3,3,3,3,3,3,3,         3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,86,3,3,3,3,3,3,3,3,3,3,3,3,3     </data> </layer> </map> 

and tried read following class:

package de.anlixstudios.davidsdragonadventure;  import java.io.ioexception; import java.io.inputstream; import java.util.hashmap; import java.util.list;  import org.xmlpull.v1.xmlpullparser; import org.xmlpull.v1.xmlpullparserexception; import org.xmlpull.v1.xmlpullparserfactory;  import android.content.context; import android.util.log; import android.widget.toast;  public class levelcreator {  public list<hashmap<integer, list<integer>>> levels = null; public list<string> levelname = null; private graphicsholder mgraphicsholder; public static final string ns = null; private gameactivity mgameactivity; private string heightstring; private string widthstring; private inputstream in_s; private context context; private int height = 0; private int width = 0;  public levelcreator(context context, graphicsholder holder){     // todo adding parameters gameactivity , graphicsholder     this.context = context;     mgameactivity = (gameactivity) context;     mgraphicsholder = holder;     log.d("levelcreator", "created"); }  // public accessible function, returns levels public list<hashmap<integer, list<integer>>> getlevels(){     xmlpullparserfactory pullparserfactory;     try{         pullparserfactory = xmlpullparserfactory.newinstance();         log.d("pullparserfactory", "new instance created");         xmlpullparser parser = pullparserfactory.newpullparser();         in_s = context.getassets().open("test2.xml");         log.d("got assets", "setting input , starting");         parser.setfeature(xmlpullparser.feature_process_namespaces, false);         parser.setinput(in_s, null);         parser.nexttag();         return parsexml(parser);     } catch (xmlpullparserexception e){         e.printstacktrace();     } catch (ioexception e){         e.printstacktrace();     }     return null; }  // called public function , actual work private list<hashmap<integer, list<integer>>> parsexml(xmlpullparser parser)  throws xmlpullparserexception,ioexception {      log.d("levelcreator", "parsexml");      list<hashmap<integer, list<integer>>> field = null;      parser.require(xmlpullparser.start_tag, ns, "map");      int eventtype = parser.geteventtype();      while(eventtype != xmlpullparser.end_document){         log.d("levelcreator", "eventtype != xmlpullparser.end_document");         if(parser.geteventtype() != xmlpullparser.start_tag) {             continue;         }         string name = parser.getname();         log.d("levelcreator", "name: " + name);         // starts looking entry tag         if(name.equals("layer")) {             log.d("levelcreator", "name = layer");             widthstring = (string) parser.getproperty("width");             heightstring = (string) parser.getproperty("height");             try {                 width = integer.parseint(widthstring);                 height = integer.parseint(heightstring);             } catch(numberformatexception nfe) {                 system.out.println("could not parse " + nfe);             }             log.d("width", widthstring);             log.d("height", heightstring);             field.add(readentry(parser));         } else {             skip(parser);             log.d("levelcreator", "skipped");         }     }     return field; }  // returns 1 level int xml file private hashmap<integer, list<integer>> readentry(xmlpullparser parser) throws xmlpullparserexception, ioexception {     parser.require(xmlpullparser.start_tag, ns, "layer");     hashmap<integer, list<integer>> data = null;     while(parser.next() != xmlpullparser.end_tag) {         if(parser.geteventtype() != xmlpullparser.start_tag) {             continue;         }         string name = parser.getname();         if(name.equals("data")) {             log.d("levelcreator", "name = data");             data = readdata(parser);         } else {             skip(parser);         }     }     return data; }  private hashmap<integer, list<integer>> readdata(xmlpullparser parser) throws xmlpullparserexception, ioexception {     parser.require(xmlpullparser.start_tag, ns, "data");     string datastring = readtext(parser);     log.d("levelcreator", "readtext");     parser.require(xmlpullparser.end_tag, ns, "data");     // todo make string hashmap     return createmap(datastring); }  // method skip tags not wanted private void skip(xmlpullparser parser) throws xmlpullparserexception,  ioexception {             log.d("levelcreator", "eventtype != xmlpullparser.end_document");     if (parser.geteventtype() != xmlpullparser.start_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;         }     } }  // returns text in <data></data> field private string readtext(xmlpullparser parser) throws ioexception,  xmlpullparserexception {     string result = "";     if (parser.next() == xmlpullparser.text) {         result = parser.gettext();         parser.nexttag();     }     return result; }  // returns nothing should later return hashmap<integer,  // list<integer>> string, info height , width private hashmap<integer, list<integer>> createmap(string xmldata) {     log.d("levelcreator", "createmap");     hashmap<integer, list<integer>> level;     list<integer> row;     string[] alldata = xmldata.split(",");     int count = 0;     (string data : alldata) {         log.d("" + count, data);     }     // todo making splitted string hashmap width , height      return null; }  public list<string> getlevelnames(){     return levelname; } } 

parts of class example @ developer.android.com, thought understand seem not to. ah, , it's stuck @ logtext right before

if(eventtype != xmlpullparser.end_document){     continue; } 

query. why? , have string data? ah, haven't written algorithm creating hashmap yet, because wanted see if { "0", "0", "0", ... } or { "0,", "0,", "0,", ... } back. nice if me. thx! oh , seem not have understood xmlparser anyway, if there easier way, please tell me :)

it's blocking because don't move in parser. need call next() or nexttag()

while(eventtype != xmlpullparser.end_document){     log.d("levelcreator", "eventtype != xmlpullparser.end_document");      eventtype = parser.next();      if(eventtype != xmlpullparser.start_tag) {        continue;     }     ... }  

that should help