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PONullPointerException error
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copied!<p>My Logcat </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>Booking.java</p> <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(); TextView txtArrival = (TextView) findViewById(R.id.txtArrival); Spinner colourSpinner = (Spinner) findViewById(R.id.myspinner); colourSpinner.setOnItemSelectedListener(new MyOnItemSelectedListener()); } private void fillData() { 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<?> arg0, View v,int position, long id) { boolean result = Booking.this.c.moveToPosition(position); if (result) { String title=Booking.this.c.getString(1); Booking.this.txtArrival.setText(title); } } @Override public void onNothingSelected(AdapterView<?> arg0) { // TODO Auto-generated method stub } }; } </code></pre> <p>I would like to know how to solve this error. Thank you.</p>

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