java - Output JSON image in listView -

-

i tried uploading image using json. create link image in json. many times tried fix problem, no success.

is there mistake in use of downloadimagetask in adapter adapter ?

mainactivity

protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);      list = (listview) findviewbyid(r.id.list);     newslist = new arraylist<news>();      //this take json image     new newsasynktask().execute(); }  public class newsasynktask extends asynctask<string , void, string> {     protected string doinbackground(string... params) {         //code     }      protected void onpostexecute(string file_url) {         pdialog.dismiss();      //this run adapter         newsadapter adapter = new newsadapter(getapplicationcontext(), r.layout.list_row, newslist);         list.setadapter(adapter);     } }

my adapter adapter

public class newsadapter extends arrayadapter<news> {     arraylist<news> arraylistnews;     int resourse;     context context;     layoutinflater vi;      public newsadapter(context context, int resource, arraylist<news> objects) {         super(context, resource, objects);          arraylistnews = objects;         resourse = resource;         this.context = context;          vi = (layoutinflater) context.getsystemservice(context.layout_inflater_service);     }      @override     public view getview(int position, view convertview, viewgroup parent) {          viewholder holder;         if (convertview == null) {             convertview = vi.inflate(resourse, null);             holder = new viewholder();              holder.imageview = (imageview) convertview.findviewbyid(r.id.imagenews);             holder.namenews = (textview) convertview.findviewbyid(r.id.namenews);             holder.daynews = (textview) convertview.findviewbyid(r.id.daynews);              convertview.settag(holder);         } else {             holder = (viewholder) convertview.gettag();         }          new downloadimagetask(holder.imageview).execute(arraylistnews.get(position).getimagenews());         holder.namenews.settext(arraylistnews.get(position).getnamenews());         holder.daynews.settext(arraylistnews.get(position).getdaynews());          return convertview;     }      static class viewholder {         public imageview imageview;         public textview namenews;         public textview daynews;     }      //this try load image. using wrong somthing, please me     private class downloadimagetask extends asynctask<string, void, bitmap> {         imageview bmimage;          imageloader imgloader;          public downloadimagetask(imageview bmimage) {             this.bmimage = bmimage;         }          @override         protected bitmap doinbackground(string... urls) {             final string urldisplay = urls[0];             bitmap micon11 = null;             try {                   handler handler = new handler(context.getmainlooper());                 handler.post(new runnable() {                     @override                     public void run() {                         //this class on [link][1]. try use simple, work. here dont work                         imgloader = new imageloader(context);                         imgloader.displayimage(urldisplay, bmimage);                     }                 });              } catch (exception e) {                 e.printstacktrace();             }             return micon11;         }          protected void onpostexecute(bitmap result) {             bmimage.setimagebitmap(result);         }     } }


Comments

Post a Comment

Popular posts from this blog

java - Custom OutputStreamAppender not run: LOGBACK: No context given for <MYAPPENDER> -

-
i wish write custom appender on basis of outputstreamappender . wrote following class package tests; import java.io.ioexception; import java.io.outputstream; import ch.qos.logback.core.outputstreamappender; public class myappender<e> extends outputstreamappender<e> { public myappender() { system.out.println("myappender created"); setoutputstream(new outputstream() { @override public void write(int b) throws ioexception { throw new unsupportedoperationexception(); } }); } } then wrote following runner: package tests; import org.slf4j.loggerfactory; import ch.qos.logback.classic.logger; public class runner { private static final logger log = (logger) loggerfactory.getlogger(runner.class); public static void main(string[] args) { //log.addappender(new myappender<iloggingevent>()); log.info("hello world"); } } finall...
Read more

java - UML - How would you draw a try catch in a sequence diagram? -

-
Image
is there standard way of drawing try catch sequence diagrams? i've made attempt based on this feel end result doesn't feel right. code diagram based around: public static void save () { try { filehandle filehandle = gdx.files.external(file); filehandle.writestring(boolean.tostring(constantshandler.soundenabled)+"\n", false); (int = 0; < 5; i++) { filehandle.writestring(integer.tostring(constantshandler.highscores[i])+"\n", true); } } catch (throwable e) { } } my attempt note: know still need add loop. that's ok. fragments meant show conditional control flow in sequence diagram. superstructures puts limitations on use of fragments (see pp. 467 of ss2.1.1). should use critical region try part above. , option catch . however, keep telling can take quite freedom in using uml. it's language , such changes in life time. long reader ge...
Read more

c++ - No viable overloaded operator for references a map -

-
i trying use map can make tag names reference number. when try , use it, in code error (6 in total every time reference map): src/main.cpp:25:45: error: no viable overloaded operator[] type 'std::map<std::string, std::string>' const char* idcs = node.child_value(tagmap[3]); this code: #include "pugi/pugixml.hpp" #include <iostream> #include <string> #include <map> int main() { pugi::xml_document doca, docb; std::map<std::string, pugi::xml_node> mapa, mapb; std::map<std::string, std::string> tagmap {{"1", "data"}, {"2", "entry"}, {"3", "id"}, {"4", "content"}}; if (!doca.load_file("a.xml") || !docb.load_file("b.xml")) { std::cout << "can't find input files"; return 1; } (auto& node: doca.child(tagmap[1]).children(tagmap[2])) { co...
Read more