It is a realy bad idea to make network communication in the ui thread.
You should always make net io in a worker thread.
On 8 February 2011 15:45, alex c <alex.chuny...@gmail.com> wrote:
> ello.
> i'm experiencing a problem when uploading images from my android
> application to remote server (apache with php).
>
> devices are: htc hd2 and samsung galaxy tab. all with android 2.2
>
> the application itself is very simple:
> public class UploadTest extends Activity {
> private final static String TAG = "UploadTest";
>
> /** Called when the activity is first created. */
> @Override
> public void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> setContentView(R.layout.main);
> }
>
> private void uploadImage() {
> String imagePath = Environment.getExternalStorageDirectory()
> + "/Andorra/Images/748.jpg";
> String exportUrl =
> "http://domainname.here/pda/export_photos.php";;
>
> String responseStr = "";
>
> MultipartEntity reqEntity = new
> MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
>
> reqEntity.addPart("image", new FileBody(new File(imagePath),
> "image/
> jpeg"));
> HttpResponse resp =
> NetworkUtils.sendHttpRequestMultipart(exportUrl,
> reqEntity);
>
> new AlertDialog.Builder(this).setMessage(responseStr)
> .setTitle("Finished")
> .setPositiveButton("Ok", new
> DialogInterface.OnClickListener() {
> public void onClick(DialogInterface
> dialog, int whichButton) {
> }
> }).show();
>
> }
>
> public void btn1_onClickHandler(View v) {
> uploadImage();
> }
> }
>
> so it's as simple as it can be.
> the problem is that the uploaded image is corrupted.
> the file size is same. but content can differ. sometimes it uploads
> ok. sometimes it is broken..
> example:
> original image; http://pixelbirthcloud.com/corrupted_images/1_orig.jpg
> uplaoded image: http://pixelbirthcloud.com/corrupted_images/1_corrupted.jpg
>
> the binary diff says:
> ------------------------------------------------------------------------
>
> 00051330 | 49 69 11 4B 9D E6 | 00051330 | DA BB 10 70 DC 77 |
> 00051338 | 2D B9 1B B9 E4 81 5A E6 | 00051338 | AC 20 C7 90 7E B4 33
> 80 |
> 00051340 | D4 14 B0 F4 EA 3D D1 E9 | 00051340 | 31 9A B8 C2 29 83 66
> 9C |
> 00051348 | 61 9D E3 38 F7 36 DE 63 | 00051348 | 9A 84 8E 73 9A 8D B5
> 29 |
> 00051350 | 25 9D 9D C4 64 C3 23 AA | 00051350 | 18 60 1C 0F 7A CF 33
> 01 |
> 00051358 | 4A EB 08 C3 97 7C 8C 36 | 00051358 | D4 F0 7A D3 24 BA 85
> 71 |
> 00051360 | 73 F5 E3 15 14 5B BC C1 | 00051360 | F3 0A 76 8A D6 C4 36
> 5E |
> 00051368 | B9 A4 49 06 71 1B 11 87 | 00051368 | 7B B9 5F 20 E3 A5 46
> F2 |
> 00051370 | 39 E7 76 7B 8F 5F | 00051370 | B8 1D 4E 6B 36 6D |
> ------------------------------------------------------------------------
>
> internet connection is 3g in my case and slow wifi in client's case.
> for client the images are 90% corrupted (cannot see anything) and it
> happens like 98% of the time.
>
> after some time i tried to make the upload using HttpURLConnection
> class and had same results.
> then tried to encode files with base64 but even in this case the
> base64 text is received corrupted.
>
> also tries to set transfer to chunk mode:
> HttpURLConnection conn = (HttpURLConnection) url.openConnection();
> conn.setChunkedStreamingMode(8192);
> but the result was same.. most images are corrupt.
>
> can you please help me? i am almost crying =) fighting with this for a
> week now.. thank you in advance
>
> btw. tried it with emulator via normal network and it works ok...
>
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