fileinputstream - Android - read internal data -

i'm trying make app, , need save string, tinydb in appinventor. so, found there http://developer.android.com/guide/topics/data/data-storage.html#filesinternal i'm looking saving data internal storage, don't know how read it. say:

to read file internal storage:

1. call openfileinput() , pass name of file read. returns fileinputstream.

2. read bytes file read().

3. then close stream close()

but don't know how, code never works. googled how read internal storage, , no code worked. can please tell me, how read text internal storage? :)

this code:

    edittext tagbox = (edittext)findviewbyid(r.id.edittext1);     string tag = tagbox.tostring();     context context = getapplicationcontext();       fileinputstream fis = context.openfileinput( tag );     inputstreamreader in = new inputstreamreader(fis);     bufferedreader br = new bufferedreader(in);     string data = br.readline();          toast.maketext(getapplicationcontext(), data, toast.length_long).show(); 

ok, found solution. easiest way store data ,like tinydb in appinventor, using sharedpreferences:

 sharedpreferences preferences = preferencemanager.getdefaultsharedpreferences(this);   edtior editor = preferences.edit(); 

to store data:

editor.putstring("key", "value"); 

to read data:

string value = preferences.getstring("key"); 

        file selectedfile = new file(path + "/" + selectedfromlist + ".txt");           fileinputstream fstream = null;          arraylist sal = new arraylist();         try {             fstream = new fileinputstream(selectedfile);            bufferedreader br = new bufferedreader(new inputstreamreader(fstream));           string strline;           //read file line line              while ((strline = br.readline()) != null)   {               // print content on console                 sal.add(strline);               }         } catch (ioexception e) {             // todo auto-generated catch block             e.printstacktrace();         }           //close input stream           try {             in.close();         } catch (ioexception e) {             // todo auto-generated catch block             e.printstacktrace();         }