java - App won't create a new directory -

i'm making audio recorder app. app supposed record files , save them in external storage directory. how trying it:

declaring few global variables:

string externalstoragepath = environment.getexternalstoragedirectory().getabsolutepath(); string outputpath = externalstoragepath + "/android/data/com.whizzappseasyvoicenotepad/no_name.mp3"; //output path mp3 files file appdirectory = new file(externalstoragepath + "/android/data/com.whizzappseasyvoicenotepad"); //this directory want create when app started first time 

few logs in oncreate check if externalstorage alright , working should be:

log.i("tag", "external storage directory: " + externalstoragepath); log.i("tag", "external storage state: " + environment.getexternalstoragestate()); 

log says external storage fine (storage/emulated/0) , state mounted.

then try create directory if doesn't exist yet:

if (!appdirectory.exists())     {         try {             appdirectory.createnewfile();         } catch (ioexception e) {             // todo auto-generated catch block             e.printstacktrace();         }     } 

i know external storage isn't working should if device connected pc usb cable, remove device usb , run app, folder isn't created should be. nothing happens basically.

you need use mkdir() instead of createnewfile() :

 appdirectory.mkdir(); 

also need set permission in androidmanifest.xml :

 android.permission.write_external_storage