How can i sort my arraylist alphabetical
问题 I want to sort my arraylist alphabetical but I don't get it...maybe you can help me. I dont know why but i cant work with collections.sort...what am i coding wrong? thanks a lot for all your help and time, Vinzenz public class SongsManager { final String MEDIA_PATH = Environment.getExternalStorageDirectory() .getPath() + "/"; private ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>(); private String mp3Pattern = ".mp3"; private String mp4Pattern = ".mp4";