yodaddy108
New Member
I want to read an .xml file from a web radio for my app.I've used this tutorial: http://www.androidhive.info/2011/11/android-xml-parsing-tutorial/This is the function:\[code\]public String leggi_palinsesto(){ XMLParser parser = new XMLParser(); String xml = parser.getXmlFromUrl(URL); // getting XML Document doc = parser.getDomElement(xml); // getting DOM element NodeList nl = doc.getElementsByTagName(KEY_ITEM); // looping through all item nodes <item> for (int i = 0; i < 1; i++) { Element e = null; String titolo = parser.getValue(e, KEY_TITOLO); // name child value String artista = parser.getValue(e, KEY_ARTISTA); // cost child value System.out.println(artista+" - "+titolo); } return titolo+" "+artista;}\[/code\]But when arrive to \[code\]NodeList nl = doc.getElementsByTagName(KEY_ITEM);\[/code\] the app crashes.This is the logcat:\[code\]06-28 18:27:58.089: E/AndroidRuntime(1050): FATAL EXCEPTION: main06-28 18:27:58.089: E/AndroidRuntime(1050): java.lang.NullPointerException06-28 18:27:58.089: E/AndroidRuntime(1050): at it.axiomatic.radioamicizia.RadioAmiciziaActivity.leggi_palinsesto(RadioAmiciziaActivity.java:315)06-28 18:27:58.089: E/AndroidRuntime(1050): at it.axiomatic.radioamicizia.RadioAmiciziaActivity$1$1.run(RadioAmiciziaActivity.java:122)06-28 18:27:58.089: E/AndroidRuntime(1050): at android.os.Handler.handleCallback(Handler.java:587)06-28 18:27:58.089: E/AndroidRuntime(1050): at android.os.Handler.dispatchMessage(Handler.java:92)06-28 18:27:58.089: E/AndroidRuntime(1050): at android.os.Looper.loop(Looper.java:123)06-28 18:27:58.089: E/AndroidRuntime(1050): at android.app.ActivityThread.main(ActivityThread.java:4627)06-28 18:27:58.089: E/AndroidRuntime(1050): at java.lang.reflect.Method.invokeNative(Native Method)06-28 18:27:58.089: E/AndroidRuntime(1050): at java.lang.reflect.Method.invoke(Method.java:521)06-28 18:27:58.089: E/AndroidRuntime(1050): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)06-28 18:27:58.089: E/AndroidRuntime(1050): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)06-28 18:27:58.089: E/AndroidRuntime(1050): at dalvik.system.NativeStart.main(Native Method)\[/code\]This is the constant:\[code\]static final String URL = "http://www.radioamicizia.com/demo.xml"; // XML node keys static final String KEY_ITEM = "song"; // parent node static final String KEY_TITOLO = "Title"; static final String KEY_ARTISTA = "Artist";\[/code\]Could someone please help me with this problem.