Get data from the server (picture obtained here)

public class Mainactivity extends Activity {

protected static final int SUCCESS = 1;

Private EditText et_id;

Private ImageView img;

Private Handler Handler = new Handler () {

public void Handlemessage (Message msg) {

Switch (msg.what) {

Case SUCCESS:

Bitmap BM = (Bitmap) msg.obj;

Img.setimagebitmap (BM);

Break

Default

Break

}

}

};

@Override

protected void OnCreate (Bundle savedinstancestate) {

Super.oncreate (savedinstancestate);

Setcontentview (R.layout.activity_main);

et_id = (EditText) Findviewbyid (r.id.et_id);

img = (ImageView) Findviewbyid (r.id.iv_show);

}

public void Downs (View v) {

//handler+message

Open new threads as long as it is time-consuming

New Thread () {

public void Run () {

Bitmap BM = downimg ();

Message msg = new Message ();

Msg.obj = BM;

Msg.what = SUCCESS;

Handler.sendmessage (msg);

};

}.start ();

}

Public Bitmap downimg () {

String path = Et_id.gettext (). toString (). Trim ();

HttpURLConnection conn = null;

try {

conn = (httpurlconnection) new URL (path). OpenConnection ();

Conn.setconnecttimeout (5000);

Conn.setrequestmethod ("GET");

if (conn.getresponsecode () = = 200) {

InputStream in = Conn.getinputstream ();

Byte[] B = utils.write (in);

Bitmap BM = Bitmapfactory.decodebytearray (b, 0, b.length);

return BM;

} else {

Toast.maketext (Getapplicationcontext (), "Request Failed", "$"). Show ();

}

} catch (Exception e) {

TODO auto-generated Catch block

E.printstacktrace ();

} finally {

IF (conn! = null) {

Conn.disconnect ();

}

}

return null;

}

}

public class Utils {

public static byte[] Write (InputStream in) {

Bytearrayoutputstream out = new Bytearrayoutputstream ();

byte[] bytes = new byte[1024];

int len = 0;

try {

while (len = in.read (bytes))! =-1) {

Out.write (bytes, 0, Len);

}

return Out.tobytearray ();

} catch (IOException e) {

TODO auto-generated Catch block

E.printstacktrace ();

}

return null;

}

}

This article is from the "Android Small Notes" blog, please be sure to keep this source http://dreamwing.blog.51cto.com/9872128/1619145

Get data from the server (picture obtained here)