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POArrayAdapter possibly causes app to crash
 

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    <p>I am having a problem moving forward with my app. I just started developing the app and only have about 15 hours involved so far. But I have hit a snag. Usually I am able to google snags and most of my answers come from this forum!</p> <p>so I hope I can find a solution for this. Below is my activity java file. This is where the issue is as it was working fine before. I have been having a ton of trouble with showing my list using an array adapter. </p> <pre><code>public class Favorites extends Activity{ UserFunctions userFunctions = new UserFunctions(); ArrayList&lt;String&gt; zipcodes = new ArrayList&lt;String&gt;(0); ArrayAdapter&lt;String&gt; arrayAdapter1 = new ArrayAdapter&lt;String&gt;(this,android.R.layout.activity_list_item,zipcodes); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.favoritespage); new DownloadDataTask().execute(); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.activity_main_screen, menu); return true; } private class DownloadDataTask extends AsyncTask&lt;JSONArray, JSONArray, ArrayList&lt;String&gt; &gt; { @Override protected ArrayList&lt;String&gt; doInBackground(JSONArray... params) { JSONArray json = userFunctions.ziplistrequest("37.5", "140.45", "20"); for(int i=0; i &lt; json.length() ; i++) { JSONObject jarray = null; try { jarray = json.getJSONObject(i); String zip = jarray.getString("ZIPCODE"); zipcodes.add(zip); arrayAdapter1.add(zip); Log.d(zip,"Output"); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return zipcodes; } protected void onPostExecute(){ ListView listView = (ListView) findViewById(R.id.listView1); listView.setAdapter(arrayAdapter1); } } </code></pre> <p>}</p> <p>Now I do not know what is causing my problem exactly. I have tried googling individual parts of the trace to no avail. I find many articles on it but each one presents it completely different than I have mine so their solution does not work for me. Below is the trace.</p> <pre><code>01-29 07:55:47.753: E/AndroidRuntime(3723): FATAL EXCEPTION: main 01-29 07:55:47.753: E/AndroidRuntime(3723): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.lo/com.example.lo.Favorites}: java.lang.IllegalStateException: System services not available to Activities before onCreate() 01-29 07:55:47.753: E/AndroidRuntime(3723): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2106) 01-29 07:55:47.753: E/AndroidRuntime(3723): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 01-29 07:55:47.753: E/AndroidRuntime(3723): at android.app.ActivityThread.access$600(ActivityThread.java:141) 01-29 07:55:47.753: E/AndroidRuntime(3723): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 01-29 07:55:47.753: E/AndroidRuntime(3723): at android.os.Handler.dispatchMessage(Handler.java:99) 01-29 07:55:47.753: E/AndroidRuntime(3723): at android.os.Looper.loop(Looper.java:137) 01-29 07:55:47.753: E/AndroidRuntime(3723): at android.app.ActivityThread.main(ActivityThread.java:5039) 01-29 07:55:47.753: E/AndroidRuntime(3723): at java.lang.reflect.Method.invokeNative(Native Method) 01-29 07:55:47.753: E/AndroidRuntime(3723): at java.lang.reflect.Method.invoke(Method.java:511) 01-29 07:55:47.753: E/AndroidRuntime(3723): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 01-29 07:55:47.753: E/AndroidRuntime(3723): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 01-29 07:55:47.753: E/AndroidRuntime(3723): at dalvik.system.NativeStart.main(Native Method) 01-29 07:55:47.753: E/AndroidRuntime(3723): Caused by: java.lang.IllegalStateException: System services not available to Activities before onCreate() 01-29 07:55:47.753: E/AndroidRuntime(3723): at android.app.Activity.getSystemService(Activity.java:4463) 01-29 07:55:47.753: E/AndroidRuntime(3723): at android.widget.ArrayAdapter.init(ArrayAdapter.java:310) 01-29 07:55:47.753: E/AndroidRuntime(3723): at android.widget.ArrayAdapter.&lt;init&gt;(ArrayAdapter.java:104) 01-29 07:55:47.753: E/AndroidRuntime(3723): at com.example.lo.Favorites.&lt;init&gt;(Favorites.java:33) 01-29 07:55:47.753: E/AndroidRuntime(3723): at java.lang.Class.newInstanceImpl(Native Method) 01-29 07:55:47.753: E/AndroidRuntime(3723): at java.lang.Class.newInstance(Class.java:1319) 01-29 07:55:47.753: E/AndroidRuntime(3723): at android.app.Instrumentation.newActivity(Instrumentation.java:1054) 01-29 07:55:47.753: E/AndroidRuntime(3723): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097) 01-29 07:55:47.753: E/AndroidRuntime(3723): ... 11 more </code></pre> <p>I will be trying to fix this in the meantime. I think I am the only one who would rather program than watch the superbowl :P</p>
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    1. COhow couldn't you google this snag... it's so common...
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    2. COfirst I did not know what I was looking for, and second I do not understand it which makes it hard searching for an answer.
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    3. COnext time paste the error on google. `System services not available to Activities before onCreate()`
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