Unable to open file "/mnt/sdcard/test.txt"

Question

I keep getting error by not being able to find the files. i used the android emulator to simulate the code

java.io.FileNotFoundException :/mnt/sdcard/test.txt: open failed: EACCES (Permission denied) open failed

please help.. thanks

public class TestUpload extends Activity { 

  /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.activity_test_upload); 

        final TextView tmp = (TextView) findViewById(R.id.textView1); 
        tmp.setText("Hi! Click the button!"); 

        Button b = (Button) findViewById(R.id.button1); 
        b.setOnClickListener(new OnClickListener() { 
                public void onClick(View v) { 
                        File f = new File("/mnt/sdcard/test.txt"); 
                        try { 
                                        f.createNewFile(); 
                                        Date d = new Date(); 
                                        PrintWriter writer = new PrintWriter(f);
                                        writer.println(d.toString()); 
                                        writer.close(); 

                                        HttpClient client = new DefaultHttpClient();
                                         httpPostFileUpload(client, "/mnt/sdcard/test.txt", "http://localhost/upload.php", "uploadedfile"); 
                        } catch (Exception e) { 
                                        // TODO Auto-generated catch block 
                                        e.printStackTrace(); 
                                } 
                } 
        }); 
    } 

    public void httpPostFileUpload(HttpClient client,String filePath,String uploadUri,String inputNameAttr) throws ClientProtocolException,IOException { 

            HttpUriRequest         request         = new HttpPost(uploadUri); 
            MultipartEntity        form                = new MultipartEntity(); 
            client.getParams().setBooleanParameter("http.protocol.expect-continue", false); 
            form.addPart(inputNameAttr, new FileBody(new File(filePath))); 

                ((HttpEntityEnclosingRequestBase) request).setEntity(form); 

                try { 
                        client.execute(request); 
                } catch (ClientProtocolException e) { 
                        throw e; 
                } catch (IOException ee) { 
                        throw ee; 
                } 
    } 
}

Check whether you have declared some sdcard storage space over the emulator. Also see if you have mentioned the permission for using external storage in andorid manifest. — Yogesh Patil, May 22 '13 at 08:34
try String path=Environment.getExternalStorageDirectory().getAbsolutePath(); File f = new File(path+"/test.txt"); — Athul Harikumar, May 22 '13 at 08:37
yup i have added sdcard storage space already over the emulator! permission for external storage... have not declared — user2408603, May 22 '13 at 08:37
possible duplicate [Permission denied when writting into sdCard](http://stackoverflow.com/q/14475951/1699210) — bummi, Aug 28 '13 at 12:23

score 0 · Answer 1 · answered May 22 '13 at 08:34

0

Add this line in yout manifest.xml :

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

Then you will be able to write in external storage.

answered May 22 '13 at 08:34

Fabien Sa

9,135
4
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44

score 0 · Answer 2 · answered May 22 '13 at 08:37

0

use this way:

String file = Environment.getExternalStorageDirectory()+"/test.txt";

File f = new File(file);
if(f.exists()){
   f.createNewFile(); 
}
// your code...

also add below permission in android manifest file

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

answered May 22 '13 at 08:37

Dhaval Parmar

18,812
8
82
177

i changed to String file = Environment.getExternalStorageDirectory()+"/test.txt"; now i get open failed: ENOENT(No such file or directory) – user2408603 May 22 '13 at 08:47

Unable to open file "/mnt/sdcard/test.txt"

2 Answers2