How to reference media files by using string array in android? -

in android program, have string array containing words, eg:

string arr[]={"asong", "bsong", "csong"}; 

i have media files same name in res/raw folder. array size large(50-60 elements). want play raw files using

r.raw.(arr[1])  

or may equal r.raw.bsong, there way this? or have reference each 1 separately tradition?

string arr[]={"asong", "bsong", "csong"};  (int = 0; < arr.length; i++) { int song= getresources().getidentifier("raw/" + arr[i], null,         getpackagename());  inputstream inputstream = getresources().openrawresource(song);  // play song logic here  }