java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.s

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.showactivity1/com.example.showactivity1.MainActivity}: java.lang.NullPointerException
出现了这个错误

public class MainActivity extends Activity {

	private static final String COLUMN_NAME = null;

	private static final String COLUMN_ANAME = null;

	ListAdapter adapter;

	ListView listView;

	@SuppressWarnings("deprecation")

	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		

		setContentView(R.layout.activity_main);

		listView = (ListView) findViewById(R.id.listview);

		// TODO Auto-generated method stub

		Uri uri = Uri.parse("content://com.example.activity1/profile");

		Cursor c = getContentResolver().query(uri, null, null,null, null);

		startManagingCursor(c);

		

		adapter=new SimpleCursorAdapter(this,

	    R.layout.softlist, c,

        new String[] {COLUMN_NAME,COLUMN_ANAME },

        new int[] { R.id.name,R.id.desc });//这行出错！！！！

		listView.setAdapter(adapter);

		

		

	}



}

XML文件

activity_main
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<ListView
android:id="@+id/listview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:drawSelectorOnTop="false" >
</ListView>

</LinearLayout>




softlist.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/vw1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">

<TextView android:id="@+id/name"
android:textSize="18sp"
android:textStyle="bold"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>

<TextView android:id="@+id/desc"
android:textSize="14sp"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>

</LinearLayout>

</LinearLayout>