java - Android - Fill string array with urls -

i have url "yyyyyyy.com/test.txt", text file. contains urls of .mp3 audios.

yyyyyyy.de/1.mp3 yyyyyyy.de/2.mp3 yyyyyyy.de/3.mp3 //exactly 

my intention read each line of text file , store in array

urls[0]=yyyyyyy.de/1.mp3 urls[1]=yyyyyyy.de/2.mp3 ... 

this.

string[] urls; int i=0;  random rand; int min=0; int max=5; // have 6 urls in text file int randomnum;  @override  protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);    rand = new random();      randomnum = rand.nextint((max - min) + 1) + min; //generates integer between 0-5     try {         // create url desired page         url url = new url("yyyyy.de/test.txt"); //my text file location          // read text returned server         bufferedreader in = new bufferedreader(new     inputstreamreader(url.openstream()));         string str;         while ((str = in.readline()) != null) {            urls[i]=str;            i++;         }         in.close();        } catch (malformedurlexception e) {       } catch (ioexception e) {      }       boolean isplaying = false;      if (!isplaying) {         isplaying = true;         mediaplayer mp = new mediaplayer();         try {             mp.setdatasource(urls[randomnum]);             mp.prepare();             mp.start();         } catch (ioexception e) {          }     } else {         isplaying = false;      }  } 

i have add in manifest.xml android:permission. don't know problem is...the app closes , tells me line " mp.setdatasource(urls[randomnum]);" wrong

here logcat : http://textuploader.com/5iw5b in advance !!

your array null

put code after super.oncreate

urls=new string[max]

update 3:

try this:

arraylist<string> urls=new arraylist<string>();  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);      try {         // create url desired page         url url = new url("yyyyy.de/test.txt"); //my text file location          // read text returned server         bufferedreader in = new bufferedreader(new     inputstreamreader(url.openstream()));         string str;         while ((str = in.readline()) != null) {             urls.add(str);         }         in.close();        } catch (malformedurlexception e) {       } catch (ioexception e) {      }  log.i("test","url count="+urls.size());       boolean isplaying = false;      if (!isplaying) {         isplaying = true;         mediaplayer mp = new mediaplayer();         try {             int randompos = new random().nextint(urls.size());             mp.setdatasource(urls.get(randompos));             mp.prepare();             mp.start();         } catch (ioexception e) {          }     } else {         isplaying = false;      }  }