获取系统联系人及电话

package com.example.android.contentprovider;


import java.util.ArrayList;
import java.util.List;


import android.app.ExpandableListActivity;
import android.content.ContentResolver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.provider.ContactsContract.CommonDataKinds;
import android.view.Menu;


public class MainActivity extends ExpandableListActivity {
private ContentResolver resolver;
private List<Person> grouplist;


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
grouplist = new ArrayList<Person>();
initData();
DataAdapter adapter = new DataAdapter(grouplist, this);
setListAdapter(adapter);
getExpandableListView().setIndicatorBounds(
getWindowManager().getDefaultDisplay().getWidth() - 140,
getWindowManager().getDefaultDisplay().getWidth() - 60);
}


private void initData() {
resolver = getContentResolver();
Uri contactsUri = ContactsContract.Contacts.CONTENT_URI;
Cursor cursor = resolver.query(contactsUri, null, null, null, null);
while (cursor.moveToNext()) {
Person person = new Person();
int contact_id = cursor.getInt(cursor
.getColumnIndex(ContactsContract.Contacts._ID));
String contact_name = cursor.getString(cursor
.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
person.setId(contact_id);
person.setName(contact_name);
List<String> phones = person.getNumber();
Uri phoneUri = CommonDataKinds.Phone.CONTENT_URI;
String[] projection = new String[] { "data1" };
String selection = CommonDataKinds.Phone.CONTACT_ID + " = ?";
String[] selectionArgs = new String[] { contact_id + "" };
Cursor cursor_phone = resolver.query(phoneUri, projection,
selection, selectionArgs, null);
while (cursor_phone.moveToNext()) {
String data = cursor_phone.getString(cursor_phone
.getColumnIndex(CommonDataKinds.Phone.NUMBER));
phones.add(data);

}

cursor_phone.close();

//接下来可以获取邮箱等信息

grouplist.add(person);

}
cursor.close();
}

}

person 类

package com.example.android.contentprovider;


import java.util.ArrayList;
import java.util.List;


public class Person {
private int id;
private String name;
private List<String> number;
private String eml;
public Person() {
number = new ArrayList<String>();
}


public int getId() {
return id;
}


public void setId(int id) {
this.id = id;
}


public String getName() {
return name;
}


public void setName(String name) {
this.name = name;
}


public List<String> getNumber() {
return number;
}


public String getEml() {
return eml;
}


public void setEml(String eml) {
this.eml = eml;
}


}

最后记得加上权限：

    <uses-permission android:name="android.permission.READ_CONTACTS"/>
    <uses-permission android:name="android.permission.WRITE_CONTACTS"/>