android - How To Create a Simple Universal Image Loader via URL(Only one image) -

i done don't know why image does't desplay. , told me after how can put images grid views.)

public class mainactivity extends actionbaractivity {     private imageview imageview;     private bitmap bitmap;     @override     protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     imageview = (imageview) findviewbyid(r.id.imageview1);     bitmap=getbitmapfromurl("http://cs596.vk.me/u78792285/a_98dc2d1e.jpg");     imageview.setimagebitmap(bitmap);     }       @override     public boolean oncreateoptionsmenu(menu menu) {      // inflate menu; adds items action bar if present.     getmenuinflater().inflate(r.menu.main, menu);     return true;     }     public bitmap getbitmapfromurl(string src)     {     try {     url url=new url(src);     httpurlconnection connection= (httpurlconnection) url.openconnection();     connection.setdoinput(true);     connection.connect();     inputstream input=connection.getinputstream();     bitmap bitmap= bitmapfactory.decodestream(input);     return bitmap;     } catch (exception e) {     // todo: handle exception     e.printstacktrace();     return null;     }     }  } 

try code, both httpurlconnection , updating image image view need in thread or runnable.

note how changed oncreate

@override     protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     setbitmapfromurl("http://cs596.vk.me/u78792285/a_98dc2d1e.jpg");     }   public void setbitmapfromurl(string src)  {     try      {        new thread(new runnable()         {            public void run()             {               url url=new url(src);               httpurlconnection connection= (httpurlconnection) url.openconnection();               connection.setdoinput(true);               connection.connect();               inputstream input=connection.getinputstream();               bitmap bitmap= bitmapfactory.decodestream(input);                if(bitmap!=null)               {                 try                 {                   final bitmap mutablebitmap = bitmap.copy(bitmap.config.argb_8888, true);                   runonuithread(new runnable()                    {                        @override                     public void run()                      {                       imageview = (imageview) findviewbyid(r.id.imageview1);                       imageview.setimagebitmap(bitmap);                     }                            });                 }                 catch(outofmemoryerror e)                 {                 }              }            }        }     } catch (exception e) {     // todo: handle exception     e.printstacktrace();     }  }