You're on the right track, but it's best not to hardcode the path to a file on the SD Card. Check out this API:
http://developer.android.com/reference/android/os/Environment.html#getExternalStorageDirectory%28%29 This will help you get the directory to the SD card. It usually isn't /sdcard, it's usually /mnt/sdcard, but it may move or may be renamed on devices, so it's best to use that or a similar API to help you find it. Check out these APIs also: http://developer.android.com/reference/android/os/Environment.html#getDataDirectory%28%29 http://developer.android.com/reference/android/content/Context.html#getDir%28java.lang.String,%20int%29 http://developer.android.com/reference/android/content/Context.html#getExternalFilesDir%28java.lang.String%29 http://developer.android.com/reference/android/content/Context.html#getFilesDir%28%29 There are a lot of functions in the API to help you find a good spot to put your data files depending on what you are doing. There are even more than this, but this should get you started. Steven Studio LFP http://www.studio-lfp.com On Sunday, October 23, 2011 6:08:22 PM UTC-5, melis wrote: > > Hi all, > i really tried hard but couldn't achieve to create or any other file > operations in Android. First thing i did was tp check the availabilty > of the SD card media, with the sample code here: > > http://developer.android.com/guide/topics/data/data-storage.html#filesExternal. > > > I have the media and works properly. > Then i tried to create a .txt file with this code snippet: > > File myFile = new File("/sdcard/mysdfile.txt"); > myFile.createNewFile(); > FileOutputStream fOut = new FileOutputStream(myFile); > OutputStreamWriter myOutWriter = new OutputStreamWriter(fOut); > myOutWriter.append(txtData.getText()); > myOutWriter.close(); > fOut.close(); > also tried this one, which works in the Java project but not in > android: > > String path = "/sdcard/data.txt"; > File dosya = new File(path); > dosya.createNewFile(); > > last thing i tried is another sample code from android developers; > > private void createExternalStoragePrivateFile() { > // TODO Auto-generated method stub > File file = new File(getExternalFilesDir(null),"DemoFile.jpg"); > > InputStream is = getResources().openRawResource(R.drawable.icon); > try { > OutputStream os = new FileOutputStream(file); > byte[] data = new byte [is.available()]; > is.read(data); > os.write(data); > os.close(); > > } catch (IOException e) { > // TODO Auto-generated catch block > e.printStackTrace(); > Log.w(" External Storage ", " Error writing " + file, e); > } > } > > I'm getting no errors but also no files in the sd card. And i don't > forget to add <uses-permission > android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> permission > line into the manifest. > I'm checking the F driver after executing the program to see if any > txt file created, but nothing happened so far. I read SD card is not > available when the android device is hooked up to the computer via USB > in somewhere. To check this possibility, i also looked at the sd > card's context with an laptop sd card adapter but again, i have > nothing. > Please someone help me. I'm out of ideas. > > > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
