Android Conent provider

public class MainActivity extends ListActivity {
//Declare CONTENT_URI for contacts
public static final Uri CONTENT_URI = Uri.parse("content://com.android.contacts/contacts/1557");
public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
setContentView(R.layout.main);
 
Uri myContacts = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
 
 Cursor c = getContentResolver().query(myContacts, new String[]
		 {ContactsContract.CommonDataKinds.Phone._ID,
		 ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
		 ContactsContract.CommonDataKinds.Phone.NUMBER,ContactsContract.CommonDataKinds.Email.DISPLAY_NAME}, null, null, null);
		 String[] columns = new String[] {
				 ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME,
				 ContactsContract.CommonDataKinds.Phone.NUMBER,ContactsContract.CommonDataKinds.Email.DISPLAY_NAME};
 
		// the XML defined views which the data will be bound to
		int[] to = new int[] { R.id.name_entry, R.id.number_entry,R.id.email_entry };
 
		SimpleCursorAdapter mAdapter = new SimpleCursorAdapter(this,
				R.layout.contacts, c, columns, to);
 
		// set this adapter as your ListActivity's adapter
		setListAdapter(mAdapter);
 }
}
 
main.xml
---------
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="vertical" android:layout_width="fill_parent"
	android:layout_height="fill_parent">
	<ListView android:id="@android:id/android:list"
		android:layout_width="fill_parent" android:layout_height="wrap_content"
		android:background="#00FF00" />
</LinearLayout><?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView
	        android:id="@+id/name_entry"
	        android:layout_width="wrap_content"
	        android:layout_height="wrap_content"
	        android:textSize="28dip" />
<TextView
	        android:id="@+id/number_entry"
	        android:layout_width="wrap_content"
	        android:layout_height="wrap_content"
	        android:textSize="28dip" />
	        <TextView
	        android:id="@+id/email_entry"
	        android:layout_width="wrap_content"
	        android:layout_height="wrap_content"
	        android:textSize="28dip" />
</LinearLayout>
 
 
contacts.xml
------------
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView
	        android:id="@+id/name_entry"
	        android:layout_width="wrap_content"
	        android:layout_height="wrap_content"
	        android:textSize="28dip" />
<TextView
	        android:id="@+id/number_entry"
	        android:layout_width="wrap_content"
	        android:layout_height="wrap_content"
	        android:textSize="28dip" />
	        <TextView
	        android:id="@+id/email_entry"
	        android:layout_width="wrap_content"<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView
	        android:id="@+id/name_entry"
	        android:layout_width="wrap_content"
	        android:layout_height="wrap_content"
	        android:textSize="28dip" />
<TextView
	        android:id="@+id/number_entry"
	        android:layout_width="wrap_content"
	        android:layout_height="wrap_content"
	        android:textSize="28dip" />
	        <TextView
	        android:id="@+id/email_entry"
	        android:layout_width="wrap_content"
	        android:layout_height="wrap_content"
	        android:textSize="28dip" />
</LinearLayout>
 
	        android:layout_height="wrap_content"
	        android:textSize="28dip" />
</LinearLayout>
 
 
AndroidMainifest.xml
--------------------
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.v3.ContProv"
      android:versionCode="1"
      android:versionName="1.0">
      <uses-permission android:name="android.permission.READ_CONTACTS"/>
    <uses-sdk android:minSdkVersion="8" />
<permission android:name="com.v3.ContProv" />
 
 
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".MainActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
 
    </application>
    <provider android:name=".Contacts"
          android:authorities="com.android.contacts" />
</manifest>