java - Custom List View Adapter Syntax for images -

i new android development , in process of creating first app. app takes picture, previews picture, randomly selects picture database upload server , displays json text information in listview.

i trying use custom list view adapter allow json information's corresponding picture in listview , not imageview.

i have thoroughly researched listview adapters understand syntax , place code implement listview picture properly. however, receiving 4 error messages prevent code compiling. realize there other posts similar topics on website, have dug around them , tried implement states solutions no success.

below code:

public class jsonbuilderactivity extends listactivity {      private progressdialog pdialog;      //url json     private static string url = ".........";      //json node names     private static final string tag_cars = "cars";      //root     private static final string tag_carid = "carid";     private static final string tag_carvin = "carvin";     private static final string tag_img = "carmainimage";     customlistviewadapter adapter;      jsonarray carid = null;  //initializes json array      private customlistviewadapter clva = null;     listview lv;     list<item> item = new arraylist<jsonbuilderactivity.item>();      static string response = null;      //hashmap listview     arraylist<hashmap<string, object>> caridlist;      @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);          lv = getlistview();         //arraylist<item> item;          lv.setadapter(adapter);         lv = (listview) findviewbyid(r.id.list_item);         adapter = new customlistviewadapter(this,item);         lv.setadapter(adapter);          //listview on item click listener         lv.setonitemclicklistener(new onitemclicklistener() {              @override             public void onitemclick(adapterview<?> parent, view view, int position, long id) {                  //gets values selected listitem                 string cars = ((textview) view.findviewbyid(r.id.cars)).gettext().tostring();                 string car_id = ((textview) view.findviewbyid(r.id.car_id)).gettext().tostring();                 string car_vin = ((textview) view.findviewbyid(r.id.car_vin)).gettext().tostring();                 string model_img = ((imageview) view.findviewbyid(r.id.model_img)).gettag().tostring();                  intent in = new intent(jsonbuilderactivity.this, mainactivity.class);                 //sends data mainactivity                 in.putextra("tag_cars", cars);                 in.putextra("tag_carid", car_id);                 in.putextra("tag_carvin", car_vin);                 in.putextra("tag_img", model_img);                 startactivity(in);             }         });          //calls async task json         new getcars().execute();     }      public class servicehandler {          public final static int = 1;         public final static int post = 2;          public servicehandler() {          }          /**          * makes service call          *          * @url - url make request          * @method - http request method          */         public string makeservicecall(string url, int method) {             return this.makeservicecall(url, method, null);         }          /**          * makes service call          *          * @url - url make request          * @method - http request method          * @params - http request params          */         public string makeservicecall(string url, int method, arraylist<namevaluepair> params) {             try {                 defaulthttpclient httpclient = new defaulthttpclient();                 httpentity httpentity = null;                 httpresponse httpresponse = null;                  //checks http request method type                 if (method == post) {                     httppost httppost = new httppost(url);                      //adds post params                     if (params != null) {                         httppost.setentity(new urlencodedformentity(params));                     }                      httpresponse = httpclient.execute(httppost);                  } else if (method == get) {                      //appends params url                     if (params != null) {                         string paramstring = urlencodedutils.format(params, "utf-8");                         url += "?" + paramstring;                     }                     httpget httpget = new httpget(url);                      httpresponse = httpclient.execute(httpget);                 }                  httpentity = httpresponse.getentity();                 response = entityutils.tostring(httpentity);              } catch (unsupportedencodingexception e) {                 e.printstacktrace();             } catch (clientprotocolexception e) {                 e.printstacktrace();             } catch (ioexception e) {                 e.printstacktrace();             }              return response;          }     }      public uri getimageuri(context incontext, bitmap inimage) {         bytearrayoutputstream bytes = new bytearrayoutputstream();         inimage.compress(bitmap.compressformat.jpeg, 100, bytes);         string path = mediastore.images.media.insertimage(incontext.getcontentresolver(), inimage, "carmainimage", null);         return uri.parse(path);     }      public void savebmptofile(file filename, bitmap bmp) {         fileoutputstream out = null;         try {             out = new fileoutputstream(filename);             bmp.compress(bitmap.compressformat.png, 100, out);         } catch (exception e) {             e.printstacktrace();         } {             try {                 if (out != null) {                     out.close();                 }             } catch (ioexception e) {                 e.printstacktrace();             }         }     }      public boolean renamefileextension(string source, string newextension) {         string target;         string currentextension = getfileextension(source);          if (currentextension.equals("")) {             target = source + "." + newextension;         } else {             target = source.replacefirst(pattern.quote("." +                     currentextension) + "$", matcher.quotereplacement("." + newextension));          }         return new file(source).renameto(new file(target));     }      public string getfileextension(string f) {         string ext = "";         int = f.lastindexof('.');         if (i > 0 && < f.length() - 1) {             ext = f.substring(i + 1);         }         return ext;     }      /*      * async task class json making http call      */     private class getcars extends asynctask<void, void, void> {          @override         protected void onpreexecute() {             super.onpreexecute();             caridlist = new arraylist<hashmap<string, object>>();              //shows progress dialog             pdialog = new progressdialog(jsonbuilderactivity.this);             pdialog.setmessage("please wait...");             pdialog.setcancelable(false);             pdialog.show();          }          @override         protected void doinbackground(void... arg0) {              //creates service handler class instance             servicehandler sh = new servicehandler();              //makes request url , getting response             string jsonstr = sh.makeservicecall(url, servicehandler.get);              //prints json response in log             log.d("getcars response: ", "> " + jsonstr);              if (jsonstr != null) {                 try {                      log.d("try", "in try");                      jsonobject jsonobj = new jsonobject(jsonstr);                     log.d("jsonobject", "new json object");                      //gets json array node                     carid = jsonobj.getjsonarray(tag_cars);                     log.d("json array", "user point array");                      int len = carid.length();                     log.d("len", "get array length");                      (int = 0; < carid.length(); i++) {                         jsonobject c = carid.getjsonobject(i);                         string car_id = c.getstring(tag_carid);                         log.d("car_id", car_id);                          string car_vin = c.getstring(tag_carvin);                         log.d("car_vin", car_vin);                          string model_img = c.getstring(tag_img);                         log.d("model_img", model_img);                           //customlistviewadapter adapter = new customlistviewadapter(this, r.layout.list_item, item);                          // string model_img = c.getstring(tag_img);                         //log.d("model_img", model_img);                          //hashmap single match                         hashmap<string, object> matchgetcars = new hashmap<string, object>();                          //adds each child node hashmap key => value                         matchgetcars.put(tag_carid, car_id);                         matchgetcars.put(tag_carvin, car_vin);                         matchgetcars.put(tag_img, model_img);                         caridlist.add(matchgetcars);                     }                 } catch (jsonexception e) {                     e.printstacktrace();                 }             } else {                 log.e("servicehandler", "couldn't data url");             }              return null;         }           @override         protected void onpostexecute(void result) {             super.onpostexecute(result);             //dismisses progress dialog             if (pdialog.isshowing())                 pdialog.dismiss();              /**              * updates parsed json data listview              * */             //listadapter adapter = new simpleadapter(jsonbuilderactivity.this, caridlist, r.layout.list_item,             //      new string[]{tag_carid, tag_carvin, tag_img}, new int[]{r.id.car_id, r.id.car_vin, r.id.model_img});             // setlistadapter(adapter);             listview lv = (listview)findviewbyid(r.id.list_item);             clva = new customlistviewadapter();             lv.setadapter(clva);         }      }      public class customlistviewadapter extends arrayadapter<item> {         private arraylist<item> objitem;         activity context;          public customlistviewadapter(arraylist<item> item, int resourceid, activity context){             super(context, resourceid, item);             this.context = context;             this.objitem = item;         }           private class viewholder {             imageview model_img;             textview car_id;             textview car_vin;         }           public view getview ( int position, view convertview, viewgroup parent){             viewholder holder = null;             final item item = getitem(position);             layoutinflater minflater = (layoutinflater) context                     .getsystemservice(activity.layout_inflater_service);              if (convertview == null) {                 convertview = minflater.inflate(r.layout.list_item, null);                 holder.car_id = (textview) convertview.findviewbyid(r.id.car_id);                 holder.car_vin = (textview) convertview.findviewbyid(r.id.car_vin);                 holder.model_img = (imageview) convertview.findviewbyid(r.id.model_img);                  convertview.settag(holder);             } else                 holder = (viewholder) convertview.gettag();              holder.car_id.settext(item.getvin());             holder.car_vin.settext(item.getid());             holder.model_img.setimageresource(item.getmodelimg());              return convertview;         }      }     public class item {         private int model_img;         private string car_id;         private string car_vin;          public item(int model_img, string car_id, string car_vin) {             this.model_img = model_img;             this.car_id = car_id;             this.car_vin = car_vin;         }          /* getters          */         public int getmodelimg() {             return model_img;         }          public string getvin() {             return car_vin;         }          public string getid() {             return car_id;         }              /* setters              */          public void setmodelimg(int model_img) {             this.model_img = model_img;         }          public void setvin(string car_vin) {             this.car_vin = car_vin;         }          public void setid(string car_id) {             this.car_id = car_id;         }      } } 

error:

customlistviewadapter() cannot applied customlistviewadapter for: adapter = new customlistviewadapter(this,item); in oncreate

update: adapter = new customlistviewadapter(this, r.id.list_view, item); in oncreate.' still receive same (above) error.

imports:

import android.app.activity; import android.app.listactivity; import android.app.progressdialog; import android.content.context; import android.content.intent; import android.graphics.bitmap; import android.net.uri; import android.os.asynctask; import android.os.bundle; import android.provider.mediastore; import android.util.log; import android.view.layoutinflater; import android.view.view; import android.view.viewgroup; import android.widget.adapterview; import android.widget.adapterview.onitemclicklistener; import android.widget.arrayadapter; import android.widget.imageview; import android.widget.listview; import android.widget.textview;  import org.apache.http.httpentity; import org.apache.http.httpresponse; import org.apache.http.namevaluepair; import org.apache.http.client.clientprotocolexception; import org.apache.http.client.entity.urlencodedformentity; import org.apache.http.client.methods.httpget; import org.apache.http.client.methods.httppost; import org.apache.http.client.utils.urlencodedutils; import org.apache.http.impl.client.defaulthttpclient; import org.apache.http.util.entityutils; import org.json.jsonarray; import org.json.jsonexception; import org.json.jsonobject;  import java.io.bytearrayoutputstream; import java.io.file; import java.io.fileoutputstream; import java.io.ioexception; import java.io.unsupportedencodingexception; import java.util.arraylist; import java.util.hashmap; import java.util.list; import java.util.regex.matcher; import java.util.regex.pattern; 

i having trouble understanding doing incorrect. appreciate input. thank you.

you're trying instantiate adapter has constructor

public customlistviewadapter(arraylist<item> item, int resourceid, activity context) 

although you're calling this

adapter = new customlistviewadapter(this,item); 

problem: arguments don't match

it should

adapter = new customlistviewadapter(item, r.layout.list_row, this); 

note list_row made , should actual layout file in app or in android sdk