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POValues not loading in the listview after parsing JSON from the Assets folder
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  1. POValues not loading in the listview after parsing JSON from the Assets folder
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    copied!<p>I am trying to get values from a json file in the assets folder and loading it into my simple list view. There's not error in the code and I did try to log all the states. I can see the required values in the log cat but when I using an adapter, the screen loads but I cannot see the data. </p> <p>I am also using fragments in this test application and I have 4 tabs in total. In one tab I wanted to show all the data loaded from the json file.</p> <p>Is there something wrong with my adapter? Some help will be really apreciated.</p> <pre><code>public class Test extends Fragment { Context context; // TextView tview; ImageView iv; ImageView iv1; private static final String STATE = "state"; ArrayList&lt;HashMap&lt;String, String&gt;&gt; jsonlist = new ArrayList&lt;HashMap&lt;String, String&gt;&gt;(); @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { context = getActivity(); View rootView = inflater.inflate(R.layout.xyz, container, false); ListView lv1 = (ListView) rootView.findViewById(R.id.list); TextView tv1 = (TextView) rootView.findViewById(R.id.rowidtext); lv1.setAdapter(new SimpleAdapter(getActivity(), jsonlist, R.layout.xyz, new String[] { STATE }, new int[] { R.id.rowidtext })); try { JSONObject json = new JSONObject(loadJSONFromAsset()); if (json != null) { JSONArray array = json.getJSONArray("Information"); Log.i("Data1234", array.toString()); for (int i = 0; i &lt;= array.length(); i++) { JSONObject c = array.getJSONObject(i); String vstate = c.getString(STATE); Log.i("STATE", vstate); HashMap&lt;String, String&gt; map = new HashMap&lt;String, String&gt;(); // Add child node to HashMap key &amp; value map.put(STATE, vstate); jsonlist.add(map); } Log.i("Data Coming? ", jsonlist.toString()); } } catch (JSONException e) { e.printStackTrace(); } Log.i("Data Coming? ", jsonlist.toString()); return rootView; } public String loadJSONFromAsset() { String json = null; try { InputStream is = getActivity().getAssets().open("testjson1.json"); int size = is.available(); byte[] buffer = new byte[size]; is.read(buffer); is.close(); json = new String(buffer, "UTF-8"); } catch (IOException ex) { ex.printStackTrace(); return null; } return json; } } </code></pre> <p>Logcat:</p> <pre><code>10-28 22:43:08.364: D/dalvikvm(5806): GC_FOR_ALLOC freed 60K, 8% free 2779K/3016K, paused 23ms, total 25ms 10-28 22:43:08.364: I/dalvikvm-heap(5806): Grow heap (frag case) to 3.957MB for 1127536-byte allocation 10-28 22:43:08.474: D/dalvikvm(5806): GC_FOR_ALLOC freed 2K, 6% free 3878K/4120K, paused 100ms, total 100ms 10-28 22:43:08.804: D/gralloc_goldfish(5806): Emulator without GPU emulation detected. 10-28 22:43:13.845: I/Data1234(5806): [{"state":"JAVA","outdoorfun":"yes","additionalinfo":"{ search: 'online', website: 'http:\/\/states.arkansas.com', latitudeandlongitude: '93905, 63550}","cold":"no","type":"landlocked"},{"state":"ANDROID","outdoorfun":"no","additionalinfo":"{ search: 'online', website: 'http:\/\/states.chicago.com', latitudeandlongitude: '23905, 45355}","cold":"yes","type":"windy"},{"state":"CORE JAVA","outdoorfun":"no","additionalinfo":"{ search: 'online', website: 'http:\/\/states.chicago.com', latitudeandlongitude: '23905, 45355}","cold":"yes","type":"windy"},null] 10-28 22:43:13.845: I/STATE(5806): JAVA 10-28 22:43:13.845: I/STATE(5806): ANDROID 10-28 22:43:13.845: I/STATE(5806): CORE JAVA 10-28 22:43:13.855: W/System.err(5806): ***org.json.JSONException: Value at 3 is null.*** 10-28 22:43:13.855: W/System.err(5806): at org.json.JSONArray.get(JSONArray.java:259) 10-28 22:43:13.855: W/System.err(5806): at org.json.JSONArray.getJSONObject(JSONArray.java:480) 10-28 22:43:13.855: W/System.err(5806): at com.mike.myapp.Train.onCreateView(Train.java:91) 10-28 22:43:13.855: W/System.err(5806): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1478) 10-28 22:43:13.865: W/System.err(5806): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:927) 10-28 22:43:13.865: W/System.err(5806): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104) 10-28 22:43:13.865: W/System.err(5806): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682) 10-28 22:43:13.865: W/System.err(5806): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1460) 10-28 22:43:13.865: W/System.err(5806): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:472) 10-28 22:43:13.865: W/System.err(5806): at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141) 10-28 22:43:13.865: W/System.err(5806): at android.support.v4.view.ViewPager.populate(ViewPager.java:1068) 10-28 22:43:13.875: W/System.err(5806): at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:550) 10-28 22:43:13.875: W/System.err(5806): at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:509) 10-28 22:43:13.875: W/System.err(5806): at android.support.v4.view.ViewPager.setCurrentItem(ViewPager.java:490) 10-28 22:43:13.875: W/System.err(5806): at com.mike.myapp.MainActivity.onTabSelected(MainActivity.java:91) 10-28 22:43:13.875: W/System.err(5806): at com.android.internal.app.ActionBarImpl.selectTab(ActionBarImpl.java:572) 10-28 22:43:13.875: W/System.err(5806): at com.android.internal.app.ActionBarImpl$TabImpl.select(ActionBarImpl.java:1098) 10-28 22:43:13.875: W/System.err(5806): at com.android.internal.widget.ScrollingTabContainerView$TabClickListener.onClick(ScrollingTabContainerView.java:547) 10-28 22:43:13.887: W/System.err(5806): at android.view.View.performClick(View.java:4240) 10-28 22:43:13.887: W/System.err(5806): at android.view.View$PerformClick.run(View.java:17721) 10-28 22:43:13.887: W/System.err(5806): at android.os.Handler.handleCallback(Handler.java:730) 10-28 22:43:13.895: W/System.err(5806): at android.os.Handler.dispatchMessage(Handler.java:92) 10-28 22:43:13.895: W/System.err(5806): at android.os.Looper.loop(Looper.java:137) 10-28 22:43:13.895: W/System.err(5806): at android.app.ActivityThread.main(ActivityThread.java:5103) 10-28 22:43:13.895: W/System.err(5806): at java.lang.reflect.Method.invokeNative(Native Method) 10-28 22:43:13.905: W/System.err(5806): at java.lang.reflect.Method.invoke(Method.java:525) 10-28 22:43:13.905: W/System.err(5806): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737) 10-28 22:43:13.905: W/System.err(5806): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 10-28 22:43:13.905: W/System.err(5806): at dalvik.system.NativeStart.main(Native Method) </code></pre>
 

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