Android monitoring Desktop

Source: Internet
Author: User
I. Due to "multi-screen interaction", I am trying various solutions. II. The general idea of this method is:

1. Establish a socket connection based on the C/S mode;

2. on the server side, start the thread, take screenshots continuously, and write the image stream information to dataoutputstream;

3. The client keeps reading datainputstream, then bitmapfactory. decodebytearray, creates bitmap, and notifies handler of an attempt to update;

3. Disadvantages: screenshots show that the Read and Write processes of information flows are time-consuming. Iv. Source Code

1. Server Source Code (PC)

Server. Java:

Public class server {/*** write a program opened by the server * @ Param port: Port */Public void startserver (INT port) {try {// create a serverc object java.net. serversocket SC = new java.net. serversocket (port); system. out. println ("server created successfully"); // starts to continuously receive data while (true) {// creates a join object java.net. socket Client = SC. accept (); userthread ust = new userthread (client); ust. init (); ust. start () ;}} catch (exception ef) {EF. printstacktrace () ;}} public static void main (string ARGs []) {server Cr = new server (); CR. startserver (9090 );}}

Userthread. Java:

Public class userthread extends thread {// defines the constructor and passes in the clientprivate java.net. socket Client; private Java. io. inputstream INS; private Java. io. outputstream ous; Public userthread (java.net. socket Client) {This. client = client;} // initialize public void Init () {try {ins = client. getinputstream (); ous = client. getoutputstream ();} catch (ioexception e) {// todo auto-generated catch blocke. printstacktrace () ;}// write the run method public void run () {try {sendimg ();} catch (exception e) {// todo auto-generated catch blocke. printstacktrace () ;}} public void sendimg () throws exception {dataoutputstream dous = new dataoutputstream (ous); robot RO = new robot (); dimension scrsize = toolkit. getdefatooltoolkit (). getscreensize (); rectangle r = new rectangle (scrsize. width, scrsize. height); system. out. println ("Size:" + scrsize. height + "" + scrsize. width); While (true) {bufferedimage Bui = Ro. createscreencapture (r); bytearrayoutputstream imagestream = new bytearrayoutputstream (); Boolean resultwrite = ImageIO. write (Bui, "jpg", imagestream); byte [] taginfo = imagestream. tobytearray (); // system. out. println (taginfo. length); // system. out. println (taginfo [0] + "" + taginfo [1]); // image IMG = toolkit. getdefatooltoolkit (). createimage (taginfo, 0, // taginfo. length); dous. writeint (taginfo. length + 5); dous. writebyte (byte) 4); dous. write (taginfo); // thread. sleep (100 );}}}

2. Client (Android)

Deskshowactivity. Java:

Public class extends showactivity extends activity {// defines various streamprivate Java. io. inputstream INS; private Java. io. outputstream ous; private Java. io. datainputstream dins; // define each component private imageview IMG; private textview TVW; // define a bitmap to store each image of imageview private bitmap BMM; // put the private byte [] data array of the received data; // initialize public void Init (string IP) {try {system. out. println (IP); java.net. socket SOC = new java.net. socket (IP, 9090 ); Ins = Soc. getinputstream (); dins = new datainputstream (INS); ous = Soc. getoutputstream (); system. Out. println ("created successfully! ");} Catch (exception ef) {EF. printstacktrace () ;}}// internal class, myhandlerclass myhandler extends handler {public myhandler () {} public myhandler (Looper loler) {super (Looper );} public void handlemessage (Message MSG) {IMG. setimagebitmap (Bitmap) MSG. OBJ) ;}// oncreatepublic void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout. mainfunctionactivity); // obtain the IMG = (im Ageview) findviewbyid (R. id. imgview); // TVW = (textview) findviewbyid (R. id. exittextview); // textview add listener // TVW. setonclicklistener (New onclicklistener () {// public void onclick (view v) {// system. exit (0); //}); Init ("192.168.1.179"); logoff = logoff. mylooper (); // you do not need to set Looper here, because handler uses the looper final myhandler = new myhandler (loler) of the current thread by default; new thread () {public void run () {While (true) {try {DATA = new byte [dins. readint ()-5]; dins. readbyte (); // note that readfully dins is used here. readfully (data); // Note: BMM needs to be recycled here; otherwise, an error is returned if (BMM! = NULL) {BMM. recycle ();} BMM = bitmapfactory. decodebytearray (data, 0, Data. length); system. out. println ("decode after:" + system. currenttimemillis (); // execute (adjustable) every one hundred Ms // thread. sleep (100); // create a message object and assign the obtained weather information to the message object message = message. obtain (); message. OBJ = (Bitmap) BMM; myhandler. sendmessage (Message);} catch (exception e) {// todo auto-generated Catch Block E. printstacktrace ();}}}}. start ();}}

V. Running effect:





Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.