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POAnything wrong with my code?
 

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  1. POAnything wrong with my code?
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    <pre><code>package one.two; import android.app.Activity; import android.database.Cursor; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; import android.widget.SimpleCursorAdapter; import android.widget.Spinner; import android.widget.TextView; import android.widget.AdapterView.OnItemSelectedListener; public class Booking extends Activity { private DBAdapter db; private Spinner colourSpinner; public Cursor c; public TextView txtArrival; /** Called when the activity is first created. */ public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); db = new DBAdapter(this); this.setContentView(R.layout.booking); db.open(); fillData(); db.close(); Spinner colourSpinner = (Spinner) findViewById(R.id.myspinner); } private void fillData() { Cursor c = db.getSpinnerData(); startManagingCursor(c); String[] from = new String[]{DBAdapter.KEY_ARRIVAL}; int[] to = new int[]{android.R.id.text1}; SimpleCursorAdapter adapter = new SimpleCursorAdapter(this,R.layout.booking, c, from, to ); adapter.setDropDownViewResource( android.R.layout.simple_spinner_dropdown_item ); Spinner colourSpinner = (Spinner) findViewById(R.id.myspinner); colourSpinner.setAdapter(adapter); } public class MyOnItemSelectedListener implements OnItemSelectedListener { public void onItemSelected(AdapterView&lt;?&gt; arg0, View v,int position, long id) { if (Booking.this.c.moveToPosition(position)) { String title=Booking.this.c.getString(1); Booking.this.txtArrival.setText(title); } } @Override public void onNothingSelected(AdapterView&lt;?&gt; arg0) { // TODO Auto-generated method stub } }; } </code></pre> <p>Error log</p> <pre><code> 08-06 01:27:34.874: ERROR/AndroidRuntime(721): Uncaught handler: thread main exiting due to uncaught exception 08-06 01:27:34.893: ERROR/AndroidRuntime(721): java.lang.NullPointerException 08-06 01:27:34.893: ERROR/AndroidRuntime(721): at one.two.Booking$MyOnItemSelectedListener.onItemSelected(Booking.java:53) 08-06 01:27:34.893: ERROR/AndroidRuntime(721): at android.widget.AdapterView.fireOnSelected(AdapterView.java:856) 08-06 01:27:34.893: ERROR/AndroidRuntime(721): at android.widget.AdapterView.access$200(AdapterView.java:41) 08-06 01:27:34.893: ERROR/AndroidRuntime(721): at android.widget.AdapterView$SelectionNotifier.run(AdapterView.java:827) 08-06 01:27:34.893: ERROR/AndroidRuntime(721): at android.os.Handler.handleCallback(Handler.java:587) 08-06 01:27:34.893: ERROR/AndroidRuntime(721): at android.os.Handler.dispatchMessage(Handler.java:92) 08-06 01:27:34.893: ERROR/AndroidRuntime(721): at android.os.Looper.loop(Looper.java:123) 08-06 01:27:34.893: ERROR/AndroidRuntime(721): at android.app.ActivityThread.main(ActivityThread.java:3948) 08-06 01:27:34.893: ERROR/AndroidRuntime(721): at java.lang.reflect.Method.invokeNative(Native Method) 08-06 01:27:34.893: ERROR/AndroidRuntime(721): at java.lang.reflect.Method.invoke(Method.java:521) 08-06 01:27:34.893: ERROR/AndroidRuntime(721): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:782) 08-06 01:27:34.893: ERROR/AndroidRuntime(721): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540) 08-06 01:27:34.893: ERROR/AndroidRuntime(721): at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>Thank you.</p>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USUser358218
    1. USUser358218
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    2. PO
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    3. PO
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    1. VO
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      1. POAnything wrong with my code?
      1. USRich
      1. VTFavorite
    2. VO
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      1. POAnything wrong with my code?
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POAnything wrong with my code?
      1. This table or related slice is empty.
      1. VTUpMod
    1. CODont know if it has sth to do with your error but this looks strange to me: Booking.this.c.moveToPosition(position). Couldyou explain why/what is Booking.this *confused*
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      1. POAnything wrong with my code?
      1. USInsertNickHere
    2. COCan you provide a snippet to show where you are wiring up an instance of your `MyOnItemSelectedListener` to your list instance?
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      1. POAnything wrong with my code?
      1. USQuintin Robinson
    3. CO@InsertNickHere `Booking.this` is for scope resolution, it is valid code.
      singulars
      1. POAnything wrong with my code?
      1. USQuintin Robinson
 

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