php - Unable to display image in listview item -
i trying image url , display listview item. url take mysql database via php.
currently not able image display in listview item.
the process using first download image , cache display on listview item. ( base on have search on web, can take direct url , display listview item).
any advise or coding great.
below code using , facing problem.
public void getproduct () { class getjson extends asynctask<void, void, string> { progressdialog loading; @override protected void onpreexecute() { super.onpreexecute(); loading = progressdialog.show(getactivity(), "fetching data", "wait...", false, false); } @override protected void onpostexecute(string s) { super.onpostexecute(s); loading.dismiss(); json_string = s; jsonobject jsonobject = null; arraylist<hashmap<string, string>> list2= new arraylist<hashmap<string, string>>(); try { jsonobject = new jsonobject(json_string); jsonarray result = jsonobject.getjsonarray(config.tag_json_array); log.d("json", config.tag_json_array); (int = 0; < result.length(); i++) { jsonobject jo = result.getjsonobject(i); string id = jo.getstring(config.tag_id); string title = jo.getstring(config.tag_title); string brand = jo.getstring(config.tag_brand); string itemtype = jo.getstring(config.tag_itemtype); string boostertype = jo.getstring(config.tag_boostertype); string price = jo.getstring(config.tag_price); string imgurl = jo.getstring(config.tag_imgurl); string qtyinstock = jo.getstring(config.tag_qtyinstock); string qtypending = jo.getstring(config.tag_qtypending); hashmap<string, string> event = new hashmap<string, string>(); event.put(config.tag_id, id); event.put(config.tag_title, title); event.put(config.tag_brand, brand); event.put(config.tag_itemtype, itemtype); event.put(config.tag_price, price); event.put(config.tag_imgurl, imgurl); event.put(config.tag_qtyinstock, qtyinstock); event.put(config.tag_qtypending, qtypending); //the code added picasso imageview img = (imageview)getactivity().findviewbyid(r.id.iv_flag); string imgurl = (string)event.get(config.tag_imgurl); picasso.with(getactivity()).load(imgurl).into(img); list2.add(event); listadapter adapter = new myadapter( getactivity().getbasecontext(), list2, r.layout.productitem, new string[]{config.tag_title, config.tag_price, config.tag_brand, config.tag_itemtype, config.tag_qtyinstock, "flag"}, new int[]{r.id.text1, r.id.text2, r.id.text3, r.id.text4, r.id.text5, r.id.iv_flag}); productlisting.setadapter(adapter); hashmap<string, object> hm = (hashmap<string, object>)adapter.getitem(i); string imgurl = (string)event.get(config.tag_imgurl); imageloadertask imageloadertask = new imageloadertask(); hashmap<string, object> hmdownload = new hashmap<string, object>(); hm.put("flag_path", imgurl); hm.put("position",i); imageloadertask.execute(hm); } } catch (jsonexception e) { log.e("json parser", "error parsing data [" + e.getmessage() + "] " + jsonobject); e.printstacktrace(); } } @override protected string doinbackground(void... params) { requesthandler rh = new requesthandler(); string s = rh.sendgetrequest("the url php file"); return s; } } final getjson gj = new getjson(); gj.execute(); } /** asynctask download , load image in listview */ private class imageloadertask extends asynctask<hashmap<string, object>, void, hashmap<string, object>>{ @override protected hashmap<string, object> doinbackground(hashmap<string, object>... hm) { inputstream istream=null; string imgurl = (string) hm[0].get("flag_path"); log.d("url1", imgurl); int position = (integer) hm[0].get("position"); url url; try { url = new url(imgurl); // creating http connection communicate url httpurlconnection urlconnection = (httpurlconnection) url.openconnection(); // connecting url urlconnection.connect(); // reading data url istream = urlconnection.getinputstream(); // getting caching directory file cachedirectory = getactivity().getbasecontext().getcachedir(); // temporary file store downloaded image file tmpfile = new file(cachedirectory.getpath() + "/wpta_"+position+".png"); // fileoutputstream temporary file fileoutputstream foutstream = new fileoutputstream(tmpfile); // creating bitmap downloaded inputstream bitmap b = bitmapfactory.decodestream(istream); // writing bitmap temporary file png file b.compress(bitmap.compressformat.png,100, foutstream); // flush fileoutputstream foutstream.flush(); //close fileoutputstream foutstream.close(); // create hashmap object store image path , position in listview hashmap<string, object> hmbitmap = new hashmap<string, object>(); // storing path temporary image file hmbitmap.put("flag",tmpfile.getpath()); // storing position of image in listview hmbitmap.put("position",position); // returning hashmap object containing image path , position return hmbitmap; }catch (exception e) { e.printstacktrace(); } return null; } @override protected void onpostexecute(hashmap<string, object> result) { // getting path downloaded image string path = (string) result.get("flag"); // getting position of downloaded image int position = (integer) result.get("position"); // getting adapter of listview simpleadapter adapter = (simpleadapter)productlisting.getadapter(); // getting hashmap object @ specified position of listview hashmap<string, object> hm = (hashmap<string, object>) adapter.getitem(position); // overwriting existing path in adapter hm.put("flag",path); // noticing listview dataset changes adapter.notifydatasetchanged(); } } the logcat:
06-11 19:16:21.621 21935-22767/info.androidhive.slidingmenu d/url1: http://www.genesisfrontier.com/cfs/files/images/ib53zanjknpj2cqcs/bfeh_eb2.png 06-11 19:16:21.621 21935-22767/info.androidhive.slidingmenu i/system.out: (httplog)-static: issbsettingenabled false 06-11 19:16:21.631 21935-22767/info.androidhive.slidingmenu i/system.out: knoxvpnuidstorageknoxvpnsupported api value returned false 06-11 19:16:21.731 21935-21935/info.androidhive.slidingmenu e/bitmapfactory: unable decode stream: java.io.filenotfoundexception: : open failed: enoent (no such file or directory) 06-11 19:16:21.731 21935-21935/info.androidhive.slidingmenu i/system.out: resolveuri failed on bad bitmap uri: below logcat picasso
fatal exception: main process: info.androidhive.slidingmenu, pid: 1289 java.lang.illegalargumentexception: target must not null. @ com.squareup.picasso.requestcreator.into(requestcreator.java:618) @ com.squareup.picasso.requestcreator.into(requestcreator.java:601) @ info.androidhive.slidingmenu.findpeoplefragment$1getjson.onpostexecute(findpeoplefragment.java:147) @ info.androidhive.slidingmenu.findpeoplefragment$1getjson.onpostexecute(findpeoplefragment.java:91) @ android.os.asynctask.finish(asynctask.java:632) @ android.os.asynctask.access$600(asynctask.java:177) @ android.os.asynctask$internalhandler.handlemessage(asynctask.java:645) @ android.os.handler.dispatchmessage(handler.java:102) @ android.os.looper.loop(looper.java:145) @ android.app.activitythread.main(activitythread.java:5938) @ java.lang.reflect.method.invoke(native method) @ java.lang.reflect.method.invoke(method.java:372) @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:1389) @ com.android.internal.os.zygoteinit.main(zygoteinit.java:1184)
use picasso lib download image url automatically download image url. use picasso library add in gradle file
compile 'com.squareup.picasso:picasso:2.5.2' and this
string imgurl = (string)event.get(config.tag_imgurl); picasso.with(context).load(imgurl).into("your imageview");
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