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POAndroid JSONObject issue
 

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    <p>I have splash activity that downloads JSON data from URL using asynctask and pass it to new activity witch needs to parse it and fill the listview , but after downloading application crashes, in the log chat said that it canot convert string to json object , here is code of splash activity </p> <pre><code>public class Init extends Activity { static final String DEFAULT_URL = "http://api.androidhive.info/music/music.xml"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); setContentView(R.layout.init); WebView loader = (WebView) findViewById(R.id.loader); loader.loadUrl("file:///android_asset/index.html"); new LoadingTask().execute(DEFAULT_URL); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_main, menu); return true; } public class LoadingTask extends AsyncTask&lt;String, Object, Object&gt;{ XMLParser parser = new XMLParser(); JSONParser jParser = new JSONParser(); @Override protected Object doInBackground(String... params) { // TODO Auto-generated method stub String URL = params[0]; JSONObject json = jParser.getJSONFromUrl(URL); //String xml = parser.getXmlFromUrl(URL); // getting XML from URL // getting DOM element return json; } protected void onPostExecute(Object result){ Intent startApp = new Intent("com.example.androidhive.HOME"); startApp.putExtra("json", result.toString()); startActivity(startApp); //finish(); } } } </code></pre> <p>this is source of main activity </p> <pre><code>public class Home extends Activity { // All static variables // XML node keys static final String KEY_SONG = "song"; // parent node static final String KEY_ID = "id"; static final String KEY_TITLE = "title"; static final String KEY_ARTIST = "artist"; static final String KEY_DURATION = "duration"; static final String KEY_THUMB_URL = "thumb_url"; public static final String TAG_NEWS = "news"; public static final String TAG_ID = "id"; public static final String TAG_TITLE = "title"; public static final String TAG_STORY = "story"; public static final String TAG_SH_STORY = "shorten"; public static final String TAG_DATETIME = "datetime"; public static final String TAG_AUTHOR = "author"; public static final String TAG_IMG = "img"; ListView list; LazyAdapter adapter; Button mBtnNaslovnica; private ViewSwitcher viewSwitcher; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); setContentView(R.layout.main); mBtnNaslovnica = (Button) findViewById(R.id.mBtnNaslovnica); mBtnNaslovnica.setSelected(true); TextView txtView=(TextView) findViewById(R.id.scroller); txtView.setSelected(true); ArrayList&lt;HashMap&lt;String, String&gt;&gt; homeList = new ArrayList&lt;HashMap&lt;String, String&gt;&gt;(); JSONObject jsonobj; try { jsonobj = new JSONObject(getIntent().getStringExtra("json")); JSONArray news = jsonobj.getJSONArray(TAG_NEWS); for(int i = 0; i &lt; news.length(); i++){ JSONObject c = news.getJSONObject(i); // Storing each json item in variable String id = c.getString(TAG_ID); String title = c.getString(TAG_TITLE); String story = c.getString(TAG_STORY); String shorten = c.getString(TAG_SH_STORY); String author = c.getString(TAG_AUTHOR); String datetime = c.getString(TAG_DATETIME); String img = c.getString(TAG_IMG); // creating new HashMap HashMap&lt;String, String&gt; map = new HashMap&lt;String, String&gt;(); // adding each child node to HashMap key =&gt; value map.put(TAG_ID, id); map.put(TAG_TITLE, title); map.put(TAG_SH_STORY, shorten); map.put(TAG_IMG, img); map.put(TAG_AUTHOR, author); // adding HashList to ArrayList homeList.add(map);} } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } list=(ListView)findViewById(R.id.list); // Getting adapter by passing xml data ArrayList adapter=new LazyAdapter(this, homeList); list.setAdapter(adapter); // Click event for single list row list.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView&lt;?&gt; parent, View view,int position, long id) { String cur_title = ((TextView) view.findViewById(R.id.title)).getText().toString(); String cur_artis = ((TextView) view.findViewById(R.id.artist)).getText().toString(); String cur_duration = ((TextView) view.findViewById(R.id.duration)).getText().toString(); ImageView cur_img = (ImageView) view.findViewById(R.id.list_image); String cur_img_url = (String) cur_img.getTag(); Intent i = new Intent("com.example.androidhive.CURENTNEWS"); i.putExtra("CUR_TITLE", cur_title); i.putExtra("CUR_ARTIS", cur_artis); i.putExtra("CUR_DURATION", cur_duration); i.putExtra("CUR_IMG_URL", cur_img_url); startActivity(i); } }); } } </code></pre> <p>this is source of class that holds Adapter </p> <pre><code>public class LazyAdapter extends BaseAdapter { private Activity activity; private ArrayList&lt;HashMap&lt;String, String&gt;&gt; data; private static LayoutInflater inflater=null; public ImageLoader imageLoader; public LazyAdapter(Activity a, ArrayList&lt;HashMap&lt;String, String&gt;&gt; d) { activity = a; data=d; inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); imageLoader=new ImageLoader(activity.getApplicationContext()); } public int getCount() { return data.size(); } public Object getItem(int position) { return position; } public long getItemId(int position) { return position; } public View getView(int position, View convertView, ViewGroup parent) { View vi=convertView; if(convertView==null) vi = inflater.inflate(R.layout.list_row, null); TextView title = (TextView)vi.findViewById(R.id.title); // title TextView artist = (TextView)vi.findViewById(R.id.artist); // artist name TextView duration = (TextView)vi.findViewById(R.id.duration); // duration ImageView thumb_image=(ImageView)vi.findViewById(R.id.list_image); // thumb image HashMap&lt;String, String&gt; n = new HashMap&lt;String, String&gt;(); n = data.get(position); // Setting all values in listview title.setText(n.get(Home.TAG_TITLE)); artist.setText(n.get(Home.TAG_AUTHOR)); duration.setText(n.get(Home.TAG_DATETIME)); thumb_image.setTag(n.get(Home.TAG_IMG)); imageLoader.DisplayImage(n.get(Home.TAG_IMG), thumb_image); return vi; } } </code></pre> <p>and here is logchat </p> <pre><code> 08-31 14:34:41.066: V/xcli2(2349): DnsResolver.createDnsResolver() ok in run of WebCoreThread 08-31 14:34:42.546: E/JSON Parser(2349): Error parsing data org.json.JSONException: Value &lt;?xml of type java.lang.String cannot be converted to JSONObject 08-31 14:34:42.546: W/dalvikvm(2349): threadid=1: thread exiting with uncaught exception (group=0x400207d8) 08-31 14:34:42.546: E/AndroidRuntime(2349): FATAL EXCEPTION: main 08-31 14:34:42.546: E/AndroidRuntime(2349): java.lang.NullPointerException 08-31 14:34:42.546: E/AndroidRuntime(2349): at com.example.androidhive.Init$LoadingTask.onPostExecute(Init.java:58) 08-31 14:34:42.546: E/AndroidRuntime(2349): at android.os.AsyncTask.finish(AsyncTask.java:417) 08-31 14:34:42.546: E/AndroidRuntime(2349): at android.os.AsyncTask.access$300(AsyncTask.java:127) 08-31 14:34:42.546: E/AndroidRuntime(2349): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:429) 08-31 14:34:42.546: E/AndroidRuntime(2349): at android.os.Handler.dispatchMessage(Handler.java:99) 08-31 14:34:42.546: E/AndroidRuntime(2349): at android.os.Looper.loop(Looper.java:123) 08-31 14:34:42.546: E/AndroidRuntime(2349): at android.app.ActivityThread.main(ActivityThread.java:4645) 08-31 14:34:42.546: E/AndroidRuntime(2349): at java.lang.reflect.Method.invokeNative(Native Method) 08-31 14:34:42.546: E/AndroidRuntime(2349): at java.lang.reflect.Method.invoke(Method.java:521) 08-31 14:34:42.546: E/AndroidRuntime(2349): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:878) 08-31 14:34:42.546: E/AndroidRuntime(2349): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:636) 08-31 14:34:42.546: E/AndroidRuntime(2349): at dalvik.system.NativeStart.main(Native Method) </code></pre>
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