ContentResolver获取手机联系人

android系统的联系人是通过ContentProvider来提供的，想要获取联系人可使用ContentResolver。不啰嗦上代码

public class MainActivity extends Activity {
//用来展示联系人
ListView listview = null;
//展示联系人的适配器
MylistAdapter myadapter = null;

//存放联系人名称的listview
ArrayList<String> nameList = new ArrayList<String>();
//存放联系人号码的listview  
ArrayList<String> numberList = new ArrayList<String>();
//存放联系人头像的列表    
ArrayList<Bitmap> headList = new ArrayList<Bitmap>();

/** 获取库Phon表字段 **/
private static final String[] PHONES_PROJECTION = new String[] {
        Phone.DISPLAY_NAME, Phone.NUMBER, Photo.PHOTO_ID, Phone.CONTACT_ID };

/** 联系人显示名称 **/
private static final int PHONES_DISPLAY_NAME_INDEX = 0;

/** 电话号码 **/
private static final int PHONES_NUMBER_INDEX = 1;

/** 头像ID **/
private static final int PHONES_PHOTO_ID_INDEX = 2;

/** 联系人的ID **/
private static final int PHONES_CONTACT_ID_INDEX = 3;

/** 联系人名称 **/
private ArrayList<String> mContactsName = new ArrayList<String>();

/** 联系人号码 **/
private ArrayList<String> mContactsNumber = new ArrayList<String>();

/** 联系人头像 **/
private ArrayList<Bitmap> mContactsPhonto = new ArrayList<Bitmap>();

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    listview = (ListView) findViewById(R.id.listview);

    getNumber();

    MylistAdapter adapter = new MylistAdapter();

    View view = null;
    view = view.inflate(MainActivity.this, R.layout.contactcount, null);
    TextView textCount = (TextView) view.findViewById(R.id.count);
    textCount.setText(nameList.size() + "位联系人");
    //listview底部添加底部标题
            listview.addFooterView(view);

    listview.setAdapter(adapter);

}

//获取联系人方法
public void getNumber() {

//获取ContentResolver实例
    ContentResolver resolver = MainActivity.this.getContentResolver();

//使用ContentResolver通过uri和获取字段
    Cursor phoneCursor = resolver.query(Phone.CONTENT_URI,
            PHONES_PROJECTION, null, null, null);

    if (phoneCursor != null) {
        while (phoneCursor.moveToNext()) {

//获取联系人号码

            String phoneNumber = phoneCursor.getString(PHONES_NUMBER_INDEX);

//获取联系人姓名

            String contactName = phoneCursor
                    .getString(PHONES_DISPLAY_NAME_INDEX);

//获取联系人ID

            Long contactId = phoneCursor.getLong(PHONES_CONTACT_ID_INDEX);

//获取联系人头像ID

            Long photoId = phoneCursor.getLong(PHONES_PHOTO_ID_INDEX);

            // 得到联系人头像Bitamp
            Bitmap contactPhoto = null;

            // photoid 大于0 表示联系人有头像 如果没有给此人设置头像则给他一个默认的
            if (photoId > 0) {
                Uri uri = ContentUris.withAppendedId(
                        ContactsContract.Contacts.CONTENT_URI, contactId);
                InputStream input = ContactsContract.Contacts
                        .openContactPhotoInputStream(resolver, uri);
                contactPhoto = BitmapFactory.decodeStream(input);
            } else {
                contactPhoto = BitmapFactory.decodeResource(getResources(),
                        R.drawable.head);
            }

            nameList.add(contactName);
            numberList.add(phoneNumber);
            headList.add(contactPhoto);

        }
    }
}
}


class MylistAdapter extends BaseAdapter {
    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return nameList.size();
    }

    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        convertView = convertView.inflate(MainActivity.this,
                R.layout.contactitem, null);

        ImageView head = (ImageView) convertView.findViewById(R.id.head);
        TextView name = (TextView) convertView.findViewById(R.id.name);
        TextView num = (TextView) convertView.findViewById(R.id.num);

        head.setImageBitmap(headList.get(position));
        name.setText(nameList.get(position));
        num.setText(numberList.get(position));

        return convertView;
    }
}

布局见下方，至于图片随便弄个放在drawable文件中，manifest文件注意添加读取联系人权限

主界面布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >

<ListView
    android:id="@+id/listview"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
</ListView>

列表条目布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

<ImageView
    android:id="@+id/head"
    android:layout_alignParentLeft="true"
    android:layout_marginLeft="10dp"
    android:layout_width="20dp"
    android:layout_height="20dp" />

<TextView
    android:id="@+id/name"
    android:layout_centerHorizontal="true"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

<TextView
    android:id="@+id/num"
    android:layout_alignParentRight="true"
    android:layout_marginRight="10dp"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

列表底部布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >


<TextView android:id="@+id/count"
    android:layout_centerInParent="true"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>

</RelativeLayout>