How to upload an image from android to php using asynctask -
everyone. stuck on project working on. want able upload image android gallery, encode image base64 string , send php web service, variable, decode image other end , wish.
so far able select image, gallery , encode base64 string , storing in android preference.
the problem is, think not string being sent php service (some truncated).
why think so? log.d showed me different strings when dumped @ different locations.
the code gets image , encodes is:-
private void galleryintent() { intent intent = new intent(); intent.settype("image/*"); intent.setaction(intent.action_get_content); startactivityforresult(intent.createchooser(intent, "please select file"),1); } private string onselectfromgalleryresult (intent data) { if (data != null) { try { bitmap = mediastore.images.media.getbitmap(getcontext().getcontentresolver() , data.getdata()) ; } catch (ioexception e) { e.printstacktrace(); } bytearrayoutputstream bytearrayoutputstream = new bytearrayoutputstream() ; bitmap.compress(bitmap.compressformat.jpeg, 100, bytearrayoutputstream) ; byte[] imagebytes = bytearrayoutputstream.tobytearray() ; log.d ("selected image gallery" , base64.encodetostring(imagebytes, base64.default)) ; return base64.encodetostring (imagebytes, base64.default) ; } else { return null ; } } @override public void onactivityresult(int requestcode, int resultcode, intent data) { super.onactivityresult(requestcode, resultcode, data); sharedpreferences sharedpreferences = getcontext().getsharedpreferences("myonactivityresultpref" , context.mode_private); sharedpreferences.editor editor = sharedpreferences.edit() ; if (resultcode == activity.result_ok) { if (requestcode == 1) { /*here handle image gotten gallery*/ string encodedgalleryimage = onselectfromgalleryresult(data); editor.putstring("userencodedgalleryimage" , encodedgalleryimage); } else if (requestcode == 0) { /*here handle image take using camera*/ } editor.apply(); } } here call asynctask class
private void callasynctask () { sharedpreferences sp = getcontext().getsharedpreferences("myonactivityresultpref" , context.mode_private); string userquestionattachement = sp.getstring("userencodedgalleryimage" , "") ; log.d("callingencodedimage" , userquestionattachement) ; } the problem have log log.d ("selected image gallery" , base64.encodetostring(imagebytes, base64.default)) ; different log.d("callingencodedimage" , userquestionattachement) ;
there both have same beginning, different endings. expect see same characters.
can please me sort out?
in android,
new uploadfileasync().execute(""); private class uploadfileasync extends asynctask<string, void, string> { @override protected string doinbackground(string... params) { try { string sourcefileuri = "/mnt/sdcard/abc.png"; httpurlconnection conn = null; dataoutputstream dos = null; string lineend = "\r\n"; string twohyphens = "--"; string boundary = "*****"; int bytesread, bytesavailable, buffersize; byte[] buffer; int maxbuffersize = 1 * 1024 * 1024; file sourcefile = new file(sourcefileuri); if (sourcefile.isfile()) { try { string uploadserveruri = "http://website.com/abc.php?"; // open url connection servlet fileinputstream fileinputstream = new fileinputstream( sourcefile); url url = new url(uploadserveruri); // open http connection url conn = (httpurlconnection) url.openconnection(); conn.setdoinput(true); // allow inputs conn.setdooutput(true); // allow outputs conn.setusecaches(false); // don't use cached copy conn.setrequestmethod("post"); conn.setrequestproperty("connection", "keep-alive"); conn.setrequestproperty("enctype", "multipart/form-data"); conn.setrequestproperty("content-type", "multipart/form-data;boundary=" + boundary); conn.setrequestproperty("bill", sourcefileuri); dos = new dataoutputstream(conn.getoutputstream()); dos.writebytes(twohyphens + boundary + lineend); dos.writebytes("content-disposition: form-data; name=\"bill\";filename=\"" + sourcefileuri + "\"" + lineend); dos.writebytes(lineend); // create buffer of maximum size bytesavailable = fileinputstream.available(); buffersize = math.min(bytesavailable, maxbuffersize); buffer = new byte[buffersize]; // read file , write form... bytesread = fileinputstream.read(buffer, 0, buffersize); while (bytesread > 0) { dos.write(buffer, 0, buffersize); bytesavailable = fileinputstream.available(); buffersize = math .min(bytesavailable, maxbuffersize); bytesread = fileinputstream.read(buffer, 0, buffersize); } // send multipart form data necesssary after file // data... dos.writebytes(lineend); dos.writebytes(twohyphens + boundary + twohyphens + lineend); // responses server (code , message) serverresponsecode = conn.getresponsecode(); string serverresponsemessage = conn .getresponsemessage(); if (serverresponsecode == 200) { // messagetext.settext(msg); //toast.maketext(ctx, "file upload complete.", // toast.length_short).show(); // recursivedelete(mdirectory1); } // close streams // fileinputstream.close(); dos.flush(); dos.close(); } catch (exception e) { // dialog.dismiss(); e.printstacktrace(); } // dialog.dismiss(); } // end else block } catch (exception ex) { // dialog.dismiss(); ex.printstacktrace(); } return "executed"; } @override protected void onpostexecute(string result) { } @override protected void onpreexecute() { } @override protected void onprogressupdate(void... values) { } } in php,
<?php if (is_uploaded_file($_files['bill']['tmp_name'])) { $uploads_dir = './'; $tmp_name = $_files['bill']['tmp_name']; $pic_name = $_files['bill']['name']; move_uploaded_file($tmp_name, $uploads_dir.$pic_name); } else{ echo "file not uploaded successfully."; } ?> 
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