file io - FileNotFoundException in android sdcard -

-

i'm exporting file in sdcard, however, i'm facing filenotfound exception (04-12 01:26:18.494: debug/carburant(4568): /mnt/sdcard/carburant/alaa.peugeot.settings.dat/alaa.peugeot.settings.dat (is directory) )here code:

try {     file sdcard = environment.getexternalstoragedirectory();     boolean mexternalstorageavailable = false;     boolean mexternalstoragewriteable = false;     string state = environment.getexternalstoragestate();     if (environment.media_mounted.equals(state)) {         // can read , write media         log.d("carburant", "sdcard can read/write !!");         mexternalstorageavailable = mexternalstoragewriteable = true;         try {             final sharedpreferences preferences = preferencemanager                     .getdefaultsharedpreferences(context);             string filename = context.getresources().getstring(                 r.string.filename);             string filedir = "" + preferences.getstring("login", "")                 + "." + preferences.getstring("marque", "") + ".";             file f2 = new file(context.getfilesdir(), filedir                 + filename);             string y = f2.getabsolutepath();             log.d("hi export", y);             inputstream in = new fileinputstream(f2);             file dir = new file(sdcard.getabsolutepath()                 + "/carburant/");             string x = dir.getabsolutepath();             log.d("hi", x);             file file = new file(dir, filedir + filename);             file.mkdirs();             outputstream out = new fileoutputstream(file);             byte[] buf = new byte[1024];             int len;             while ((len = in.read(buf)) != -1) {                 out.write(buf, 0, len);             }             // out.flush();             in.close();             out.close();             toast.maketext(context, "export effectué",                 toast.length_short).show();         } catch (filenotfoundexception ex) {             toast.maketext(context, "file not found",                 toast.length_short).show();             string x = ex.getmessage();             log.d("carburant", x);         } catch (ioexception e) {             toast.maketext(context, "echec", toast.length_short).show();         }     }     // copyfile(nom,file.getabsolutepath());     else if (environment.media_mounted_read_only.equals(state)) {         // can read media         log.d("carburant", "sdcard read !!");         mexternalstorageavailable = true;         mexternalstoragewriteable = false;     } else {         // else wrong. may 1 of many other states,         // need         // know can neither read nor write         mexternalstorageavailable = mexternalstoragewriteable = false;     } } catch (exception e) {     log.d("carburant", e.getmessage()); }

want export file /data/data/<package name>/filedir+filename directory carburant in sdcard.

file file = new file(dir, filedir+filename); file.mkdirs();

i think have created directory called /mnt/sdcard/carburant/alaa.peugeot.settings.dat/alaa.peugeot.settings.dat mistake , code cannot on write it?


Comments

Post a Comment

Popular posts from this blog

php - What is the difference between $_SERVER['PATH_INFO'] and $_SERVER['ORIG_PATH_INFO']? -

-
what’s difference between $_server['path_info'] , $_server['orig_path_info'] ? how use them? when run print_r($_server) , path_info , orig_path_info not present in array. why not? how can enable them? i have read php manual on them, still don’t understand them. the path_info variable present if invoke php script this: http://www.example.com/phpinfo.php/hello_there it's /hello_there part after .php script. if don't invoke url that, there won't $_server["path_info"] environment variable. the porig_ prefix uncommon. path_info standard cgi-environment variable, , should never prefixed. did read that? (there issues around php3/php4 if invoked php interpreter via cgi-bin/ - hardly has such setups today.) for reference: http://www.ietf.org/rfc/rfc3875
Read more

fortran - Function return type mismatch -

-
i'm attempting recode old c++ program in fortran make use of lapack (i'm aware c++ have lapack++, i'm having lot of trouble installing it, gave up). i didn't have problems compilation, when had variables declared real . when started coding section of program required lapack, found parameters passed dsyev need double precision . tried change double precision (including changing hard coded numbers double precision counterparts, i.e. 0.0 -> 0.0d0) when try compile, following error of functions , subroutines i've written: error: return type mismatch of function <function> @ (1) (real(4)/real(8)) i'm not sure coming from, in program has been changed double precision. for example, i've declared following: double precision :: alpha(3),d(3),zeta1,zeta2 double precision :: a1(3),a2(3),d1(3),d2(3) double precision :: pi pi = 3.14159265359d0 alpha = (/0.109818d0, 0.405771d0, 2.22766d0/) d = (/0.444635d0, 0.535328d0, 0.154329d0 /) 10 i=1,3 ...
Read more

queue - mq_receive: message too long -

-
i implementing communication between 2 processes using queue. problem when call function mq_receive, error: message long. i have done following: struct mq_attr attr; long size = attr.mq_msgsize; .... // initializing queue "/gateway" int rc = mq_receive(gateway, buffer, size, &prio); if print size value, size=1, while when print same size program (got same mechanism), not long integer ( -1217186280 )... how can solve error?....so while size = 1, believe it's right "message long" why 1? p.s. have tried put : int rc = mq_receive(gateway, buffer, sizeof(buffer), &prio); but no result. it seems need read docs more carefully. when call mq_receive should pass size of destination buffer. this size must greater mq_msgsize attribute of queue . in addition, seems have error in queue attributes initialisation makes proper mq_receive call impossible. here standard message queue session: fill mq_attr struct ( doc ): struct mq_a...
Read more