Android应用开发揭秘里的EX_03_02获取联系人号码的获取方法的修正

直接上源码:

package com.example.contact;
import android.app.Activity;
import android.content.ContentResolver;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.provider.ContactsContract.PhoneLookup;
import android.util.Log;
import android.widget.TextView;
public class ReadContack extends Activity {
    /** Called when the activity is first created. */
	@Override
    public void onCreate(Bundle savedInstanceState) {
    	TextView tv = new TextView(this);
    	String string="";
        super.onCreate(savedInstanceState);
        ContentResolver cr = getContentResolver();
        Cursor cursor = cr.query(ContactsContract.Contacts.CONTENT_URI, 
        		null, null, null, null);
        while(cursor.moveToNext()) {
        	int nameFieldColumnIndex = cursor.getColumnIndex(PhoneLookup.DISPLAY_NAME);
        	String contact = cursor.getString(nameFieldColumnIndex);
        	
        	string += contact;
        	string += ":";
        	//下面为新的获取联系人电话号码方法
        	//获取联系人的ID号
        	String contactid = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));
        	Cursor phone = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, 
        			ContactsContract.CommonDataKinds.Phone.CONTACT_ID+'='+contactid,
        			null, null);
        	//电话号码可以是几组
        	while(phone.moveToNext()) {
        		String strPhoneNumber = phone.getString(phone.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
        		string += strPhoneNumber;
        	}
        	string += "\n";
        	phone.close();
        }
        cursor.close();
        tv.setText(string);
        setContentView(tv);
    }
}