java - Android retrieving data from database error -

i totally new android ..and trying tutorial found online.basic aim retrieve data database , display it. not able execute .i have attached code , error log.it great if can rectify error.

<package com.example.androidhive; import java.util.arraylist; import java.util.hashmap; import java.util.list;  import org.apache.http.namevaluepair; import org.json.jsonarray; import org.json.jsonexception; import org.json.jsonobject; import android.app.listactivity; import android.app.progressdialog; import android.content.intent; import android.os.asynctask; import android.os.bundle; import android.util.log; import android.view.view; import android.widget.adapterview; import android.widget.adapterview.onitemclicklistener; import android.widget.listadapter; import android.widget.listview; import android.widget.simpleadapter; import android.widget.textview;  public class allproductsactivity extends listactivity {      // progress dialog     private progressdialog pdialog;      // creating json parser object     jsonparser jparser = new jsonparser();      arraylist<hashmap<string, string>> productslist;      // url products list     private static string url_all_products = "192.168.0.1/android_connect/get_all_products.php";      // json node names     private static final string tag_success = "success";     private static final string tag_products = "products";     private static final string tag_pid = "pid";     private static final string tag_name = "name";      // products jsonarray     jsonarray products = null;      @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.all_products);          // hashmap listview         productslist = new arraylist<hashmap<string, string>>();          // loading products in background thread         new loadallproducts().execute();          // listview         listview lv = getlistview();          // on seleting single product         // launching edit product screen         lv.setonitemclicklistener(new onitemclicklistener() {              @override             public void onitemclick(adapterview<?> parent, view view,                     int position, long id) {                 // getting values selected listitem                 string pid = ((textview) view.findviewbyid(r.id.pid)).gettext()                         .tostring();                  // starting new intent                 intent in = new intent(getapplicationcontext(),                         editproductactivity.class);                 // sending pid next activity                 in.putextra(tag_pid, pid);                  // starting new activity , expecting response                 startactivityforresult(in, 100);             }         });      }      // response edit product activity     @override     protected void onactivityresult(int requestcode, int resultcode, intent data) {         super.onactivityresult(requestcode, resultcode, data);         // if result code 100         if (resultcode == 100) {             // if result code 100 received             // means user edited/deleted product             // reload screen again             intent intent = getintent();             finish();             startactivity(intent);         }      }      /**      * background async task load product making http request      * */     class loadallproducts extends asynctask<string, string, string> {          /**          * before starting background thread show progress dialog          * */         @override         protected void onpreexecute() {             super.onpreexecute();             pdialog = new progressdialog(allproductsactivity.this);             pdialog.setmessage("loading products. please wait...");             pdialog.setindeterminate(false);             pdialog.setcancelable(false);             pdialog.show();         }          /**          * getting products url          * */         protected string doinbackground(string... args) {             // building parameters             list<namevaluepair> params = new arraylist<namevaluepair>();             // getting json string url             jsonobject json = jparser.makehttprequest(url_all_products, "get", params);              // check log cat json reponse             log.d("all products: ", json.tostring());              try {                 // checking success tag                 int success = json.getint(tag_success);                  if (success == 1) {                     // products found                     // getting array of products                     products = json.getjsonarray(tag_products);                      // looping through products                     (int = 0; < products.length(); i++) {                         jsonobject c = products.getjsonobject(i);                          // storing each json item in variable                         string id = c.getstring(tag_pid);                         string name = c.getstring(tag_name);                          // creating new hashmap                         hashmap<string, string> map = new hashmap<string, string>();                          // adding each child node hashmap key => value                         map.put(tag_pid, id);                         map.put(tag_name, name);                          // adding hashlist arraylist                         productslist.add(map);                     }                 } else {                     // no products found                     // launch add new product activity                     intent = new intent(getapplicationcontext(),                             newproductactivity.class);                     // closing previous activities                     i.addflags(intent.flag_activity_clear_top);                     startactivity(i);                 }             } catch (jsonexception e) {                 e.printstacktrace();             }              return null;         }          /**          * after completing background task dismiss progress dialog          * **/         protected void onpostexecute(string file_url) {             // dismiss dialog after getting products             pdialog.dismiss();             // updating ui background thread             runonuithread(new runnable() {                 public void run() {                     /**                      * updating parsed json data listview                      * */                     listadapter adapter = new simpleadapter(                             allproductsactivity.this, productslist,                             r.layout.list_item, new string[] { tag_pid,                                     tag_name},                             new int[] { r.id.pid, r.id.name });                     // updating listview                     setlistadapter(adapter);                 }             });          }` 

error

07-18 02:55:17.809: d/dalvikvm(2205): gc_for_alloc freed 56k, 5% free 2815k/2944k, paused 106ms, total 107ms 07-18 02:55:17.839: i/dalvikvm-heap(2205): grow heap (frag case) 5.628mb 2949608-byte allocation 07-18 02:55:17.889: d/dalvikvm(2205): gc_for_alloc freed <1k, 3% free 5695k/5828k, paused 48ms, total 48ms 07-18 02:55:18.349: d/gralloc_goldfish(2205): emulator without gpu emulation detected. 07-18 02:55:21.079: d/dalvikvm(2205): gc_for_alloc freed 19k, 2% free 6529k/6620k, paused 86ms, total 87ms 07-18 02:55:22.309: w/dalvikvm(2205): threadid=12: thread exiting uncaught exception (group=0xb3a4fb90) 07-18 02:55:22.349: e/androidruntime(2205): fatal exception: asynctask #1 07-18 02:55:22.349: e/androidruntime(2205): process: com.example.androidhive, pid: 2205 07-18 02:55:22.349: e/androidruntime(2205): java.lang.runtimeexception: error occured while executing doinbackground() 07-18 02:55:22.349: e/androidruntime(2205):     @ android.os.asynctask$3.done(asynctask.java:300) 07-18 02:55:22.349: e/androidruntime(2205):     @ java.util.concurrent.futuretask.finishcompletion(futuretask.java:355) 07-18 02:55:22.349: e/androidruntime(2205):     @ java.util.concurrent.futuretask.setexception(futuretask.java:222) 07-18 02:55:22.349: e/androidruntime(2205):     @ java.util.concurrent.futuretask.run(futuretask.java:242) 07-18 02:55:22.349: e/androidruntime(2205):     @ java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1112) 07-18 02:55:22.349: e/androidruntime(2205):     @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:587) 07-18 02:55:22.349: e/androidruntime(2205):     @ java.lang.thread.run(thread.java:841) 07-18 02:55:22.349: e/androidruntime(2205): caused by: java.lang.illegalstateexception: target host must not null, or set in parameters. scheme=null, host=null, path=192.168.0.1/android_connect/get_all_products.php 07-18 02:55:22.349: e/androidruntime(2205):     @ org.apache.http.impl.client.defaultrequestdirector.determineroute(defaultrequestdirector.java:591) 07-18 02:55:22.349: e/androidruntime(2205):     @ org.apache.http.impl.client.defaultrequestdirector.execute(defaultrequestdirector.java:293) 07-18 02:55:22.349: e/androidruntime(2205):     @ org.apache.http.impl.client.abstracthttpclient.execute(abstracthttpclient.java:555) 07-18 02:55:22.349: e/androidruntime(2205):     @ org.apache.http.impl.client.abstracthttpclient.execute(abstracthttpclient.java:487) 07-18 02:55:22.349: e/androidruntime(2205):     @ org.apache.http.impl.client.abstracthttpclient.execute(abstracthttpclient.java:465) 07-18 02:55:22.349: e/androidruntime(2205):     @ com.example.androidhive.jsonparser.makehttprequest(jsonparser.java:62) 07-18 02:55:22.349: e/androidruntime(2205):     @ com.example.androidhive.allproductsactivity$loadallproducts.doinbackground(allproductsactivity.java:127) 07-18 02:55:22.349: e/androidruntime(2205):     @ com.example.androidhive.allproductsactivity$loadallproducts.doinbackground(allproductsactivity.java:1) 07-18 02:55:22.349: e/androidruntime(2205):     @ android.os.asynctask$2.call(asynctask.java:288) 07-18 02:55:22.349: e/androidruntime(2205):     @ java.util.concurrent.futuretask.run(futuretask.java:237) 07-18 02:55:22.349: e/androidruntime(2205):     ... 3 more 07-18 02:55:22.819: i/choreographer(2205): skipped 362 frames!  application may doing work on main thread. 07-18 02:55:25.829: i/choreographer(2205): skipped 171 frames!  application may doing work on main thread. 07-18 02:55:30.059: e/windowmanager(2205): android.view.windowleaked: activity com.example.androidhive.allproductsactivity has leaked window com.android.internal.policy.impl.phonewindow$decorview{b40ada18 v.e..... r.....id 0,0-461,175} added here 07-18 02:55:30.059: e/windowmanager(2205):  @ android.view.viewrootimpl.<init>(viewrootimpl.java:346) 07-18 02:55:30.059: e/windowmanager(2205):  @ android.view.windowmanagerglobal.addview(windowmanagerglobal.java:248) 07-18 02:55:30.059: e/windowmanager(2205):  @ android.view.windowmanagerimpl.addview(windowmanagerimpl.java:69) 07-18 02:55:30.059: e/windowmanager(2205):  @ android.app.dialog.show(dialog.java:286) 07-18 02:55:30.059: e/windowmanager(2205):  @ com.example.androidhive.allproductsactivity$loadallproducts.onpreexecute(allproductsactivity.java:117) 07-18 02:55:30.059: e/windowmanager(2205):  @ android.os.asynctask.executeonexecutor(asynctask.java:587) 07-18 02:55:30.059: e/windowmanager(2205):  @ android.os.asynctask.execute(asynctask.java:535) 07-18 02:55:30.059: e/windowmanager(2205):  @ com.example.androidhive.allproductsactivity.oncreate(allproductsactivity.java:57) 07-18 02:55:30.059: e/windowmanager(2205):  @ android.app.activity.performcreate(activity.java:5243) 07-18 02:55:30.059: e/windowmanager(2205):  @ android.app.instrumentation.callactivityoncreate(instrumentation.java:1087) 07-18 02:55:30.059: e/windowmanager(2205):  @ android.app.activitythread.performlaunchactivity(activitythread.java:2140) 07-18 02:55:30.059: e/windowmanager(2205):  @ android.app.activitythread.handlelaunchactivity(activitythread.java:2226) 07-18 02:55:30.059: e/windowmanager(2205):  @ android.app.activitythread.access$700(activitythread.java:135) 07-18 02:55:30.059: e/windowmanager(2205):  @ android.app.activitythread$h.handlemessage(activitythread.java:1397) 07-18 02:55:30.059: e/windowmanager(2205):  @ android.os.handler.dispatchmessage(handler.java:102) 07-18 02:55:30.059: e/windowmanager(2205):  @ android.os.looper.loop(looper.java:137) 07-18 02:55:30.059: e/windowmanager(2205):  @ android.app.activitythread.main(activitythread.java:4998) 07-18 02:55:30.059: e/windowmanager(2205):  @ java.lang.reflect.method.invokenative(native method) 07-18 02:55:30.059: e/windowmanager(2205):  @ java.lang.reflect.method.invoke(method.java:515) 07-18 02:55:30.059: e/windowmanager(2205):  @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:777) 07-18 02:55:30.059: e/windowmanager(2205):  @ com.android.internal.os.zygoteinit.main(zygoteinit.java:593) 07-18 02:55:30.059: e/windowmanager(2205):  @ dalvik.system.nativestart.main(native method) 07-18 02:55:30.059: i/choreographer(2205): skipped 217 frames!  application may doing work on main thread. 07-18 02:55:32.999: i/process(2205): sending signal. pid: 2205 sig: 9 

this exception message:

java.lang.illegalstateexception: target host must not n\ ull, or set in parameters. scheme=null, host=null, path=192.168.0.1/android_connect/get_all_products.php 

tells me makehttprequest fails identify host parameter in url pass. go @titus advice , provide full url http:// prefix (or whatever protocol is). if type of error changes may have more 1 error.