Android An example of uploading a picture, including how to terminate the upload process, if the upload time to update the progress bar (ii)

This can be achieved by uploading:

Activity in the execution:

Private class Uploadphototask extends asynctask<string, void, boolean>{    @Overrideprotected void OnPreExecute () {Super.onpreexecute ();} Protected Boolean doinbackground (String ... params) {    return httpuploadedfile.getinstance (). Douploadphoto ( Getapplicationcontext (), Muploadfilepathname, Mhandler);    }          protected void OnPostExecute (Boolean result) {    misuploading = false;    Showprogressbar (false); if (result) {Toast.maketext (Uploadphotoactivity.this, R.string.upload_photo_fail, Toast.length_short). Show ();} Else{toast.maketext (Uploadphotoactivity.this, R.string.upload_photo_fail, Toast.length_short). Show ();}}    

Write a handle to update the progress bar:

/** Handler to get notify from upload photo engine*/private Handler mhandler = new Handler () {@Overridepublic void Handlem Essage (Message msg) {switch (msg.what) {case HttpUploadedFile.POST_PROGRESS_NOTIFY:int completepercent = msg.arg1; Handleuploadprogress (completepercent); break;default:break;}}};/ * * Handle the uploading progress notification */private void handleuploadprogress (int completepercent) {View cont Ainerview = Findviewbyid (r.id.photo_upload_progress_bar_container); int maxlen = Containerview.getwidth (); <strong>//This is the width of the parent layout where the progress bar is located </strong>int barlen = (completepercent * maxlen)/100; View Barview = Findviewbyid (R.id.photo_upload_progress_bar); Layoutparams params = new Layoutparams ();p arams.height = Layoutparams.fill_parent;params.width = Barlen;  Barview.setlayoutparams (params); Update the width of the progress bar}/** * Show or hide progress bar */private void Showprogressbar (Boolean show) {View view = Findviewbyid (R . id.photo_upload_progress_layout); if (show) {View.setVisibility (view.visible); View bar = View.findviewbyid (R.id.photo_upload_progress_bar); Layoutparams params = new Layoutparams ();p arams.height = Layoutparams.fill_parent;params.width = 3;bar.setlayoutparams (params);} Else{view.setvisibility (View.gone);}}

The following are the uploaded modules:

public class Httpuploadedfile {/** A instance of this class */private static httpuploadedfile instance = null;/** * C Onstructor */private Httpuploadedfile () {}/** * Factory method */public static synchronized Httpuploadedfile getinstance ( {if (instance = = null) {instance = new Httpuploadedfile ();} return instance;} String url = "Http://2.novelread.sinaapp.com/framework-sae/index.php?c=main&a=getPostBody";p rivate int  Lasterrcode = 0;//Last error code byte[] Tmpbuf = new byte[buf_len];byte[] TmpBuf2 = new Byte[buf_len * 2];p ublic static final int post_progress_notify = 101; HttpURLConnection connection = null;public static final int http_argument_err = -1001;//HTTP parameter error public static final int Http_response_empty = -1002;//Http RESPONSE is//emptypublic static final int http_url_err = -1003;//URL format Error public Stati c final int http_gzip_err = -1004;//response data uncompressed failed public static final int http_canceled = -1005;//current Download canceled public static final int http_exception = -1006;//exception occurs private Boolean Bisstop = false;protected Object objabort = new Object ();p rivate Handler mhandler = null;public static final int TIMEOUT = 30000 ;//Timeout 30 seconds private static final int buf_len = 512;//Data buffer length public boolean douploadphoto (context context, String Filepathna Me,handler Handler) {Boolean ret = false; File File = new file (filepathname), if (!file.exists ()) {return false;} FileInputStream fs = null;if (file = null) {try {fs = new FileInputStream (file)} catch (FileNotFoundException e) {//TOD O auto-generated catch Blocke.printstacktrace ();}} if (file = = NULL | | fs = = NULL) {return false;} Mhandler = Handler;ret = Postwithoutresponse (context, URL, FS, (int) file.length ()), if (fs! = NULL) {try {fs.close (); fs = null;} catch (Exception e) {}}return ret;} Public Boolean Postwithoutresponse (context context, final String strurl,inputstream dataStream, int istreamlen) {<str ong>//<span style= "font-family:arial, Helvetica, Sans-serif;" The >istreamlen is the uppercase of the file, in bytes as the unit </span></strong>if (textutils.IsEmpty (strURL) | | DataStream = = NULL | | Istreamlen <= 0) {Lasterrcode = Http_argument_err;return false;} URL PostURL = null;try {posturl = new URL (strURL);} catch (Malformedurlexception ex) {LOG.E ("Httputil", "Get Malformedurl" , ex); lasterrcode = Http_url_err;return false;} Bisstop = False;inputstream input = Null;dataoutputstream ds = null; Bytearrayoutputstream byteoutstream = null; HttpURLConnection conn = null;byte[] Outdata = null;try {if (bisstop) {lasterrcode = Http_canceled;return false;} conn = getconnection (context, posturl); connection = Conn;conn.setrequestmethod ("POST"); Conn.setdoinput (true); Conn.setdooutput (True); Conn.setconnecttimeout (timeout * 3); Conn.setreadtimeout (timeout * 3); Conn.setrequestproperty ("Connection", "keep-alive"); Conn.setrequestproperty ("Content-type", "application/ Octet-stream "); Conn.setrequestproperty (" Content-length ", String.valueof (Istreamlen)); if (bisstop) {LastErrCode = Http_canceled;return false;} Get the WiFi Statuswifimanager Wifimanager = (wifiManager) Context.getsystemservice (Context.wifi_service); Boolean bwifienable = (wifimanager.getwifistate () = = wifimanager.wifi_state_enabled);//byte[] data = new Byte[buf_len];d s = new DataOutputStream (Conn.getoutputstream ()); int len = 0;int Postlen = 0;int nmaxprogress = bwifienable? 80:40;while (!bisstop && (len = Datastream.read (TMPBUF2))! =-1)) {<strong>//If Bisstop is true, Then the process of writing the file to the server below terminates </strong>ds.write (tmpBuf2, 0, Len);d S.flush ();//Waiting for uploading the image file to optimize T He progress//Bar when using Gprsif (!bwifienable) {thread.sleep (30);} Notify post Progresspostlen + = Len;if (Mhandler! = null) {message msg = new Message (); msg.what = post_progress_notify;& LT;STRONG&GT;MSG.ARG1 = (Postlen * nmaxprogress)/Istreamlen;//postlen is the file size that has been uploaded, </strong><pre name= "code" Class= "Java" >nmaxprogress to increase the speed of the progress bar

Mhandler.sendmessage (msg);}} if (bisstop) {lasterrcode = Http_canceled;return false;} Ds.flush ();//Waiting for uploading the image file to optimize the progress bar//when using Gprsif (!bwifienable) {Postle n = 0;while (Postlen < Istreamlen) {Thread.Sleep (+);//Notify post Progresspostlen + = Tmpbuf2.length;if (Mhandler! = N ull) {Message msg = new Message (); msg.what = POST_PROGRESS_NOTIFY;MSG.ARG1 = (Postlen * +)/Istreamlen + 50;mhandler.sen dmessage (msg);}}} Waiting for the server's responseinputstream is = Conn.getinputstream (); int ch; StringBuffer res = new StringBuffer (), while ((ch = is.read ())! =-1) {res.append ((char) ch);} if (Mhandler! = null) {Message msg = new Message (); msg.what = Post_progress_notify;msg.arg1 = 90;mhandler.sendmessage (msg) ;} return true;} catch (Exception ex) {LOG.E ("Httputil", "POST", ex); if (bisstop) {lasterrcode = http_canceled;} else {lasterrcode = Http_e Xception;} return false;} Finally {try {outdata = null;if (input! = null) {input.close (); input = Null;} if (ds = null) {//Ds.close ();//ds = null;//}try {ds.close ();d s = null;} catch (Exception e) {//Todo:handle Excepti ON}IF (conn! = null) {conn.disconnect (); conn = null;} if (byteoutstream! = null) {byteoutstream.close (); byteoutstream = null;} if (bisstop) { //If the Cancel method is notified when the termination is completeSynchronized (objabort) {objabort.notify ();}} if (Mhandler! = null) {Message msg = new Message (); msg.what = Post_progress_notify;msg.arg1 = 100;mhandler.sendmessage (msg );}} catch (Exception ex) {LOG.E ("Httputil", "post finally", Ex);}}} Public synchronized void Cancel () {try { bisstop = true;//The user clicked the Cancel button, this setting bisstop trueif (connection! = null) {connection.disconnect (); connection = null;} synchronized (objabort) {///only

Postwithoutresponse execution to finally notifies you that the function is complete.

Objabort.wait (50);}} catch (Exception ex) {LOG.V ("Httputil", "Canel", Ex);}} Private HttpURLConnection getconnection (context context, URL url) throws Exception {string[] apninfo = null; Wifimanager Wifimanager = (wifimanager) context.getsystemservice (context.wifi_service); int wifiState = Wifimanager.getwifistate (); HttpURLConnection conn = null; conn = (httpurlconnection) url.openconnection ();//Get HTTP connectionReturn conn;}}

Code in http://download.csdn.net/detail/baidu_nod/7735511