Android displays online images

Import Java. io. bytearrayoutputstream; <br/> Import Java. io. inputstream; <br/> Import java.net. httpurlconnection; <br/> Import java.net. URL; </P> <p> Import android. app. activity; <br/> Import android. graphics. bitmap; <br/> Import android. graphics. bitmapfactory; <br/> Import android. OS. bundle; <br/> Import android. view. view; <br/> Import android. widget. button; <br/> Import android. widget. edittext; <br/> import Droid. widget. imageview; <br/> Import android. widget. toast; </P> <p> public class androidtest extends activity {<br/> Private Static final string url = "http://avatar.csdn.net/3/2/4/2_ameyume.jpg"; <br/> private edittext pathtext; <br/> private imageview; </P> <p>/** called when the activity is first created. */<br/> @ override <br/> Public void oncreate (bundle savedinstancestate) {<br/> sup Er. oncreate (savedinstancestate); <br/> setcontentview (R. layout. main); </P> <p> pathtext = (edittext) This. findviewbyid (R. id. path); <br/> pathtext. settext (URL); <br/> imageview = (imageview) This. findviewbyid (R. id. imageview); <br/> button = (button) This. findviewbyid (R. id. button); <br/> button. setonclicklistener (new view. onclicklistener () {</P> <p> Public void onclick (view v) {<br/> string pat H = pathtext. gettext (). tostring (); <br/> try {<br/> byte [] DATA = getimage (PATH); <br/> If (Data! = NULL) {<br/> Bitmap bitmap = bitmapfactory. decodebytearray (data, 0, Data. length); // bitmap <br/> imageview. setimagebitmap (Bitmap); // display image <br/>} else {<br/> toast. maketext (androidtest. this, "Image Error! ", 1 ). show (); <br/>}< br/>} catch (exception e) {<br/> toast. maketext (androidtest. this, "newwork error! ", 1 ). show (); <br/> E. printstacktrace (); <br/>}< br/> }); </P> <p >}</P> <p>/** <br/> * Get image from newwork <br/> * @ Param path the path of image <br/> * @ return <br/> * @ throws exception <br/> */<br/> Public static byte [] getimage (string path) throws exception {<br/> URL url = new URL (PATH); <br/> httpurlconnection conn = (httpurlconnection) URL. openconnection (); <br/> Conn. setconnectti Meout (5*1000); <br/> Conn. setrequestmethod ("get"); <br/> inputstream instream = Conn. getinputstream (); <br/> If (Conn. getresponsecode () = 200) {<br/> return readstream (instream); <br/>}< br/> return NULL; <br/>}</P> <p>/** <br/> * get data from stream <br/> * @ Param instream <br/> * @ return <br/> * @ throws exception <br/> */<br/> Public static byte [] readstream (inputstream instream) throws exce Ption {<br/> bytearrayoutputstream outstream = new bytearrayoutputstream (); <br/> byte [] buffer = new byte [1024]; <br/> int Len = 0; <br/> while (LEN = instream. read (buffer ))! =-1) {<br/> outstream. write (buffer, 0, Len); <br/>}< br/> outstream. close (); <br/> instream. close (); <br/> return outstream. tobytearray (); <br/>}</P> <p >}< br/>

Add network permissions in manifest. xml
 <Uses-Permission Android: Name = "android. Permission. Internet"/>

 

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