android - Image Auto Slider using JSON -

android - Image Auto Slider using JSON -

making image auto slider, have written code to parse json still using drawable images

actually concern, how utilize online images in slideshow instead of drawables

please clear me because if same kind of problem occurs in future able make changes.

check code below:

public class mainactivity extends activity { arraylist<actors> actorslist; public int currentimageindex = 0; imageview slidingimage; // using drawable images // in place of these static images, how can utilize arraylist // along downloadimagetask class, have written posted below private int[] image_ids = { r.drawable.splash0, r.drawable.splash1, r.drawable.splash2, r.drawable.splash3 }; @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); actorslist = new arraylist<actors>(); // execute asynctask new jsonasynctask().execute("http://microblogging.wingnity.com/jsonparsingtutorial/jsonactors"); // handler set duration , upate animation final handler mhandler = new handler(); // create runnable posting final runnable mupdateresults = new runnable() { public void run() { animateandslideshow(); } }; int delay = 0000; int period = 4000; timer timer = new timer(); timer.scheduleatfixedrate(new timertask() { public void run() { mhandler.post(mupdateresults); } }, delay, period); } // asynctask info server class jsonasynctask extends asynctask<string, void, boolean> { @override protected void onpreexecute() { super.onpreexecute(); } @override protected boolean doinbackground(string... urls) { seek { //------------------>> httpget httppost = new httpget(urls[0]); httpclient httpclient = new defaulthttpclient(); httpresponse response = httpclient.execute(httppost); // statusline stat = response.getstatusline(); int status = response.getstatusline().getstatuscode(); if (status == 200) { httpentity entity = response.getentity(); string info = entityutils.tostring(entity); jsonobject jsono = new jsonobject(data); jsonarray jarray = jsono.getjsonarray("actors"); (int = 0; < jarray.length(); i++) { jsonobject object = jarray.getjsonobject(i); actors actor = new actors(); actor.setimage(object.getstring("image")); log.d("image: ", object.getstring("image")); actorslist.add(actor); } homecoming true; } //------------------>> } grab (parseexception e1) { e1.printstacktrace(); } grab (ioexception e) { e.printstacktrace(); } grab (jsonexception e) { e.printstacktrace(); } homecoming false; } protected void onpostexecute(boolean result) { if(result == false) toast.maketext(getapplicationcontext(), "unable fetch info server", toast.length_long).show(); } } // method show slide show private void animateandslideshow() { slidingimage = (imageview)findviewbyid(r.id.imageview3_left); slidingimage.setimageresource(image_ids[currentimageindex%image_ids.length]); currentimageindex++; } // method dowload online images private class downloadimagetask extends asynctask<string, void, bitmap> { imageview bmimage; public downloadimagetask(imageview bmimage) { this.bmimage = bmimage; } protected bitmap doinbackground(string... urls) { string urldisplay = urls[0]; bitmap micon11 = null; seek { inputstream in = new java.net.url(urldisplay).openstream(); micon11 = bitmapfactory.decodestream(in); } grab (exception e) { log.e("error", e.getmessage()); e.printstacktrace(); } homecoming micon11; } protected void onpostexecute(bitmap result) { bmimage.setimagebitmap(result); } } }

activity_main.xml:

<?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <imageview android:id="@+id/imageview3_left" android:layout_width="match_parent" android:layout_height="50dp" android:layout_alignparentbottom="true" android:layout_alignparentleft="true" /> </relativelayout>

logcat:

10-09 05:21:34.636: d/image:(735): http://microblogging.wingnity.com/jsonparsingtutorial/brad.jpg 10-09 05:21:34.636: d/image:(735): http://microblogging.wingnity.com/jsonparsingtutorial/cruise.jpg 10-09 05:21:34.636: d/image:(735): http://microblogging.wingnity.com/jsonparsingtutorial/johnny.jpg 10-09 05:21:34.636: d/image:(735): http://microblogging.wingnity.com/jsonparsingtutorial/jolie.jpg 10-09 05:21:34.666: d/image:(735): http://microblogging.wingnity.com/jsonparsingtutorial/tom.jpg 10-09 05:21:34.666: d/image:(735): http://microblogging.wingnity.com/jsonparsingtutorial/will.jpg

here code. utilize view flipper

public class mainactivity extends activity { arraylist<string> actorslist; viewflipper viewflipper; @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); viewflipper = (viewflipper) findviewbyid(r.id.flipper); actorslist = new arraylist<string>(); // execute asynctask new jsonasynctask().execute("http://microblogging.wingnity.com/jsonparsingtutorial/jsonactors"); // handler set duration , upate animation final handler mhandler = new handler(); // create runnable posting final runnable mupdateresults = new runnable() { public void run() { animateandslideshow(); } }; int delay = 500; int period = 4000; timer timer = new timer(); timer.scheduleatfixedrate(new timertask() { public void run() { mhandler.post(mupdateresults); } }, delay, period); } // asynctask info server class jsonasynctask extends asynctask<string, void, boolean> { progressdialog dialog; @override protected void onpreexecute() { super.onpreexecute(); dialog = new progressdialog(mainactivity.this); dialog.setmessage("loading, please wait"); dialog.settitle("connecting server"); dialog.show(); dialog.setcancelable(false); } @override protected boolean doinbackground(string... urls) { seek { //------------------>> httpget httppost = new httpget(urls[0]); httpclient httpclient = new defaulthttpclient(); httpresponse response = httpclient.execute(httppost); // statusline stat = response.getstatusline(); int status = response.getstatusline().getstatuscode(); if (status == 200) { httpentity entity = response.getentity(); string info = entityutils.tostring(entity); jsonobject jsono = new jsonobject(data); jsonarray jarray = jsono.getjsonarray("actors"); (int = 0; < jarray.length(); i++) { jsonobject object = jarray.getjsonobject(i); // actors actor = new actors(); actorslist.add(object.getstring("image")); // actor.setimage(object.getstring("image")); log.d("image: ", object.getstring("image")); // actorslist.add(actor); } homecoming true; } //------------------>> } grab (parseexception e1) { e1.printstacktrace(); } grab (ioexception e) { e.printstacktrace(); } grab (jsonexception e) { e.printstacktrace(); } homecoming false; } protected void onpostexecute(boolean result) { dialog.cancel(); if(result == false){ toast.maketext(getapplicationcontext(), "unable fetch info server", toast.length_long).show(); } else{ setflipperimage( actorslist); } } } private void setflipperimage(arraylist<string> actorslist) { for(int i=0;i<actorslist.size();i++){ log.i("set filpper called", actorslist.get(i).tostring()+""); imageview image = new imageview(getapplicationcontext()); // image.setbackgroundresource(res); picasso.with(mainactivity.this) .load(actorslist.get(i).tostring()) .placeholder(r.drawable.ic_launcher) .error(r.drawable.ic_launcher) .into(image); viewflipper.addview(image); } } // method show slide show private void animateandslideshow() { viewflipper.shownext(); }}

and utilize picasso load images....

android json