Android images are uploaded asynchronously to the PHP server instance

Background

On the Internet many uploaded to the Java server, looking for a long time, found the upload to PHP, thinking and I thought the same, is post past. Don't say much nonsense, just look at the code.

PHP code

PHP code

2. $target _path = "./upload/"; Receive file directory
3. $target _path = $target _path. basename ($_files [' uploadedfile '] [' name ']);
4. if (Move_uploaded_file ($_files [' uploadedfile '] [' tmp_name '], $target _path)) {
5. echo "The file". basename ($_files [' uploadedfile '] [' name ']). "has been uploaded";
6. } else {
7. echo "There was a error uploading the file, please try again!". $_files [' UploadedFile '] [' ERROR '];
8. }
9. ?>

Android Code

Upload the main code:

Java code

2. private void UploadFile (String uploadurl)
4. {
6. String end = "\ r \ n";
8. String Twohyphens = "--";
10. String boundary = "******";
12. Try
14. {
16. URL url = new URL (uploadurl);
18. HttpURLConnection httpurlconnection = (httpurlconnection) URL
20. . OpenConnection (); HTTP connection
22. Set the stream size for each transfer to effectively prevent the phone from crashing due to low memory
26. Httpurlconnection.setchunkedstreamingmode (128 * 1024); 128K
28. Allow input/output stream
30. Httpurlconnection.setdoinput (TRUE);
32. Httpurlconnection.setdooutput (TRUE);
34. Httpurlconnection.setusecaches (FALSE);
36. Using the Post method
38. Httpurlconnection.setrequestmethod ("POST");
40. Httpurlconnection.setrequestproperty ("Connection", "keep-alive"); Keep connected
42. Httpurlconnection.setrequestproperty ("Charset", "UTF-8"); Coding
44. Httpurlconnection.setrequestproperty ("Content-type",
46. "multipart/form-data;boundary=" + boundary); Post passes past the encoding
50. DataOutputStream dos = new DataOutputStream (
52. Httpurlconnection.getoutputstream ()); Output stream
54. Dos.writebytes (twohyphens + boundary + end);
56. Dos.writebytes ("Content-disposition:form-data; Name=\ "Uploadedfile\"; Filename=\ ""
58. + srcpath.substring (Srcpath.lastindexof ("/") + 1)
60. + "\""
62. + end);
64. Dos.writebytes (end);
68. FileInputStream fis = new FileInputStream (Srcpath); File input stream, written into memory
70. byte [] buffer = new byte [8192]; 8k
72. int count = 0;
74. Read file
76. while ((count = fis.read (buffer))! =-1)
78. {
80. Dos.write (buffer, 0, count);
82. }
84. Fis.close ();
88. Dos.writebytes (end);
90. Dos.writebytes (twohyphens + boundary + twohyphens + end);
92. Dos.flush ();
96. InputStream is = Httpurlconnection.getinputstream (); HTTP input, which results in the return
98. InputStreamReader ISR = new InputStreamReader (IS, "utf-8");
100. BufferedReader br = new BufferedReader (ISR);
102. String result = Br.readline ();
106. Toast.maketext (this, result, Toast.length_long). Show (); Output the result
108. Dos.close ();
110. Is.close ();
114. } catch (Exception e)
116. {
118. E.printstacktrace ();
120. Settitle (E.getmessage ());
122. }
124. }

Because the time-consuming operations required after Android 4.0 are operating in a non-UI thread, the front asynctask will be used.

Asynctask Portal: http://www.cnblogs.com/yydcdut/p/3707960.html

In this class, the upload operation is placed in the Doinbackground, you can have progressdialog show how much uploaded:

Java code

1. Read file
2. Bytesread = fileinputstream.read (buffer, 0, buffersize);
4. while (Bytesread > 0) {
5. Outputstream.write (buffer, 0, buffersize);
6. length + = buffersize;
7. progress = (int) ((length *)/totalsize);
8. Publishprogress (progress);
10. bytesavailable = Fileinputstream.available ();
11. buffersize = Math.min (bytesavailable, maxBufferSize);
12. Bytesread = fileinputstream.read (buffer, 0, buffersize);
13. }
14. Outputstream.writebytes (Lineend);
15. Outputstream.writebytes (twohyphens + boundary + twohyphens
16. + lineend);
17. Publishprogress (100);

Also, pay attention to the authority yo:

xml/html Code

1. < uses-permission Android:name = "Android.permission.INTERNET"/>

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