相关疑难解决方法(0)

我正在制作Android应用,需要拨打电话的联系人列表.我需要调用联系人列表功能,选择联系人,然后使用联系人姓名返回我的应用程序.这是我在互联网上获得的代码,但它不起作用.

import android.app.ListActivity;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.Contacts.People;
import android.view.View;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;

public class Contacts extends ListActivity {

    private ListAdapter mAdapter;
    public TextView pbContact;
    public static String PBCONTACT;
    public static final int ACTIVITY_EDIT=1;
    private static final int ACTIVITY_CREATE=0;

    // Called when the activity is first created. 
    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        Cursor C = getContentResolver().query(People.CONTENT_URI, null, null, null, null);
        startManagingCursor(C);

        String[] columns = new String[] {People.NAME};
        int[] names = …

我正在使用此代码检索所有联系人姓名和电话号码:

String[] projection = new String[]
{
    People.NAME,
    People.NUMBER
};

Cursor c = ctx.getContentResolver().query(People.CONTENT_URI, projection, null, null, People.NAME + " ASC");
c.moveToFirst();

int nameCol = c.getColumnIndex(People.NAME);
int numCol = c.getColumnIndex(People.NUMBER);

int nContacts = c.getCount();

do
{
  // Do something
} while(c.moveToNext());

但是,这只会返回每个联系人的主号码,但我也想获得次要号码.我怎样才能做到这一点？