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POTrying To Upload To Dropbox: NetworkOnMainThreadException?
 

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    <p>I have been fighting for like 6 hours with this now. I have followed Dropbox's "tutorials" (if they can be called that, because they are awfully poor), played with the DBRoulette example, and done tons of stuff to get my app working.</p> <p>My app can Authenticate with no problems. But I can't upload anything despite doing exactly what the tutorial is doing:</p> <p>This is the little snippet of code I have (this is to save a created note on the phone itself and then upload to Dropbox):</p> <pre><code> saveBtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { try { //Create the directory if it doesn't exist. If it does exist the next two line won't do anything. File dropNotesDir = new File(Environment.getExternalStorageDirectory() + "/documents/AppData/Dropnotes/"); dropNotesDir.mkdirs(); //----------------------------------------------------------------------------------------------- String wholeNoteString = noteBody.getText().toString(); //Now we create the title of the txt file. It will be the first line of the whole note. The name will get truncated to 32 characters //if it's too long. String noteTitle; if(wholeNoteString.indexOf("\n") &gt;= 0) //New line character found. { noteTitle = wholeNoteString.substring(0, wholeNoteString.indexOf("\n")); if(noteTitle.length() &gt;= 32) { noteTitle = wholeNoteString.substring(0, 32); } } else { if(wholeNoteString.length() &gt;= 32) { noteTitle = wholeNoteString.substring(0, 32); }else { noteTitle = wholeNoteString; } } if(extras.getString("file-mode").equals("modify")) { //We will need to delete the existing file if it does exist to save the new one. File existing = new File(Environment.getExternalStorageDirectory() + "/documents/AppData/Dropnotes/" + extras.getString("noteTitle")); existing.delete(); } File newNote = new File(Environment.getExternalStorageDirectory() + "/documents/AppData/Dropnotes/" + noteTitle + ".txt"); PrintWriter newNoteWriter = new PrintWriter(new FileOutputStream(newNote)); newNoteWriter.print(noteBody.getText().toString()); newNoteWriter.close(); //TRYING TO UPLOAD TO DROPBOX HERE File fileToUpload = new File(Environment.getExternalStorageDirectory() + "/documents/AppData/Dropnotes/" + noteTitle + ".txt"); FileInputStream file2Uis = new FileInputStream(fileToUpload); Entry newEntry = mDBApi.putFile("/" + noteTitle + ".txt", file2Uis, fileToUpload.length(), null, null); //END OF TRYING TO UPLOAD TO DROPBOX HERE Toast.makeText(view.getContext(), "Saved successfully", Toast.LENGTH_SHORT).show(); finish(); } catch (FileNotFoundException e) { Toast.makeText(view.getContext(), "File not found: " + e.getMessage(), Toast.LENGTH_SHORT).show(); e.printStackTrace(); } catch(Exception e) { Toast.makeText(view.getContext(), "Some bizarre exception occured: " + e.getClass().toString(), Toast.LENGTH_SHORT).show(); e.printStackTrace(); } } }); </code></pre> <p>It's giving me a NetworkOnMainThreadException and I don't know why. I'm trying to follow the section titled "Uploading a File" <a href="https://www.dropbox.com/developers/start/files#android" rel="nofollow" title="here">here</a>. What baffles me about their snippet is that they are not even trying to catch the exception I'm getting thrown at...</p> <p>Any help? I really need to get this working for next Friday.</p>
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    1. USAndy Ibanez
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    1. COyou getting `NetworkOnMainThreadException` because you're doing network stuff on main thread ... use AsyncTask
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      1. USSelvin
    2. CO**[Why Ice Cream Sandwich Crashes Your App](http://www.androiddesignpatterns.com/2012/06/app-force-close-honeycomb-ics.html)**. Check it out... it explains why this might occur.
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      1. USAlex Lockwood
 

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