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POApplication getting force stop
 

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  1. POApplication getting force stop
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    <p>I have an activity in which i am trying to make a web service call for a url and display the json response into the activity, but my app is getting force stop as soon as i go on that activity.</p> <p>My RedemptionActivity is like this:</p> <pre><code> public class RedemptionActivity extends Activity { ListView redemptionListView; RedemptionListAdapter adapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.redemption); redemptionListView = (ListView) findViewById(R.id.redemptionListView); if (SnapDineCommon.getInstance(this).isNetworkAvailable()) { new RedemptionResultAsyncTask(this).execute(); } else Toast.makeText(this, getString(R.string.check_network), Toast.LENGTH_SHORT).show(); } public class RedemptionResultAsyncTask extends AsyncTask&lt;String, Void, Boolean&gt; { Context context; ProgressDialog progressDialog; RedemptionResultResponse redemptionResultResponse; public RedemptionResultAsyncTask(Context context) { this.context = context; } protected void onPreExecute() { progressDialog = new ProgressDialog(context); progressDialog.setMessage("Loading..."); progressDialog.setIndeterminate(true); progressDialog.setCancelable(false); progressDialog.show(); } @Override protected Boolean doInBackground(String... params) { // TODO Auto-generated method stub try { Gson gson = new Gson(); RestWebServiceClient client = new RestWebServiceClient( SnapDineCommon.getInstance(this.context).SiteUrl + "getRedemptionData", this.context); client.AddParam("mobile_number", SnapDineCommon.getInstance(context) .getLoggedinMobileNumber()); client.Execute(RequestMethod.GET); String response = client.getResponse(); if (response == null) return false; else { redemptionResultResponse = gson.fromJson(response, RedemptionResultResponse.class); if (redemptionResultResponse == null) return false; else return true; } } catch (Exception e) { return false; } } @Override protected void onPostExecute(Boolean result) { progressDialog.dismiss(); progressDialog = null; if (result) { if (redemptionResultResponse.Success) { if (redemptionResultResponse.getSearchResult().size() &gt; 0) { //throwing null pointer exception adapter = new RedemptionListAdapter(context, R.layout.searchresult_row, redemptionResultResponse.getSearchResult()); redemptionListView.setAdapter(adapter); } else { Intent intent = new Intent(context, GenericOkDialogActivity.class); startActivity(intent); } } else { Toast.makeText(context, redemptionResultResponse.errorMessage, Toast.LENGTH_SHORT).show(); } } else { Toast.makeText(context, "An error occured. Please try later.", Toast.LENGTH_SHORT).show(); } } } } </code></pre> <p>and logcat show following errors:</p> <pre><code> 04-10 14:04:21.545: E/AndroidRuntime(6798): FATAL EXCEPTION: main 04-10 14:04:21.545: E/AndroidRuntime(6798): java.lang.NullPointerException 04-10 14:04:21.545: E/AndroidRuntime(6798): at com.JustDine.GUI.RedemptionActivity$RedemptionResultAsyncTask.onPostExecute(RedemptionActivity.java:101) 04-10 14:04:21.545: E/AndroidRuntime(6798): at com.JustDine.GUI.RedemptionActivity$RedemptionResultAsyncTask.onPostExecute(RedemptionActivity.java:1) 04-10 14:04:21.545: E/AndroidRuntime(6798): at android.os.AsyncTask.finish(AsyncTask.java:417) 04-10 14:04:21.545: E/AndroidRuntime(6798): at android.os.AsyncTask.access$300(AsyncTask.java:127) 04-10 14:04:21.545: E/AndroidRuntime(6798): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:429) 04-10 14:04:21.545: E/AndroidRuntime(6798): at android.os.Handler.dispatchMessage(Handler.java:99) 04-10 14:04:21.545: E/AndroidRuntime(6798): at android.os.Looper.loop(Looper.java:123) 04-10 14:04:21.545: E/AndroidRuntime(6798): at android.app.ActivityThread.main(ActivityThread.java:4627) 04-10 14:04:21.545: E/AndroidRuntime(6798): at java.lang.reflect.Method.invokeNative(Native Method) 04-10 14:04:21.545: E/AndroidRuntime(6798): at java.lang.reflect.Method.invoke(Method.java:521) 04-10 14:04:21.545: E/AndroidRuntime(6798): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:876) 04-10 14:04:21.545: E/AndroidRuntime(6798): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:634) 04-10 14:04:21.545: E/AndroidRuntime(6798): at dalvik.system.NativeStart.main(Native Method) 04-10 14:04:21.555: W/ActivityManager(124): Force finishing activity com.JustDine.GUI/.RedemptionActivity 04-10 14:04:21.555: W/AppErrorDialog(124): xjzb001 AppErrorDialog setLongMsg=java.lang.NullPointerException </code></pre> <p>I am unable to figure out why it is closing unexpectedly. Please help, why <code>"redemptionResultResponse.getSearchResult().size()"</code> is null, i have confirmed that redemptionResultResponse is not null..?????</p> <p><strong>Updated: here is what i have in RedemptionResultResponse:</strong></p> <pre><code> @SerializedName("Success") public boolean Success; @SerializedName("GetSearchResult") private List&lt;SearchResult&gt; getSearchResult; @SerializedName("errorMessage") public String errorMessage; @SerializedName("Tag") public String Tag; public List&lt;SearchResult&gt; getSearchResult() { return getSearchResult; } public void setSearchResult(List&lt;SearchResult&gt; getSearchResult) { this.getSearchResult = getSearchResult; } </code></pre> <p><strong>Updated XML</strong></p> <pre><code> &lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/LoginScreen" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#f0f0f0" android:orientation="vertical" &gt; &lt;RelativeLayout android:id="@+id/realtiveLayout1" android:layout_width="fill_parent" android:layout_height="44dp" android:background="#ffffff" &gt; &lt;ImageButton android:id="@+id/ibSearchResultsBack" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_centerInParent="true" android:layout_marginLeft="5dip" android:background="@drawable/backbtn" /&gt; &lt;TextView android:id="@+id/Title" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:text="Search Result" android:textColor="#FF0000" android:textSize="22sp" android:textStyle="bold" /&gt; &lt;LinearLayout android:id="@+id/settingLayout" android:layout_width="40dp" android:layout_height="fill_parent" android:layout_alignParentRight="true" android:gravity="center" &gt; &lt;ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/settingicon" /&gt; &lt;/LinearLayout&gt; &lt;/RelativeLayout&gt; &lt;TextView android:layout_width="fill_parent" android:layout_height="5dp" android:background="@drawable/light_red_gradient" /&gt; &lt;EditText android:id="@+id/editText" android:layout_width="fill_parent" android:layout_height="wrap_content" android:hint="Search.." android:singleLine="true" /&gt; &lt;LinearLayout android:layout_width="fill_parent" android:layout_height="0dp" android:layout_weight="8" &gt; &lt;ListView android:id="@+id/redemptionListView" android:layout_width="fill_parent" android:layout_height="fill_parent" &gt; &lt;/ListView&gt; &lt;/LinearLayout&gt; &lt;TextView android:layout_width="fill_parent" android:layout_height="15dp" android:background="@drawable/light_red_gradient" /&gt; &lt;/LinearLayout&gt; </code></pre>
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    1. COWhat line of code is at `RedemptionActivity.java:101`? Something there is `null` and you're trying to use it
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      1. USMatt Taylor
    2. COyou get nullpointerexception meaning something is null. check line RedemptionActivity.java:101
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      1. USRaghunandan
    3. CO@MattTaylor: if (redemptionResultResponse.getSearchResult().size() > 0) { is at 101..
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