Android開發  讀取手機聯絡人

  讀取手機聯絡人是很常見的需求，這裡簡單介紹一種方法，讀取出手機的聯絡人。

建立專案，在主佈局中新增一個listView，然後在Activity中實現。

package com.example.contact;

import java.util.ArrayList;
import java.util.HashMap;

import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class MainActivity extends ActionBarActivity {

	private ListView lvList;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		lvList = (ListView) findViewById(R.id.lv_list);
		ArrayList<HashMap<String, String>> readContact = readContact();
		// System.out.println(readContact);
		lvList.setAdapter(new SimpleAdapter(this, readContact, R.layout.contact_list_item,
				new String[] { "name", "phone" }, new int[] { R.id.tv_name, R.id.tv_phone }));

	}

	private ArrayList<HashMap<String, String>> readContact() {
		// 首先從raw_contacts中讀取聯絡人的額id("contact_id")
		// 再根據contact_id從data中查詢出相應的聯絡人姓名和電話
		// 然後根據mimetype來區分聯絡人姓名和電話

		ArrayList<HashMap<String, String>> list = new ArrayList();

		Uri rawContactUri = Uri.parse("content://com.android.contacts/raw_contacts");
		Uri datatUri = Uri.parse("content://com.android.contacts/data");
		// 從raw_contacts中讀取聯絡人的額id("contact_id")
		Cursor rawContacts = getContentResolver().query(rawContactUri, new String[] { "contact_id" }, null, null, null);
		if (rawContacts != null) {
			while (rawContacts.moveToNext()) {
				String contactId = rawContacts.getString(0);
				System.out.println("contactId==" + contactId);
				Cursor data = getContentResolver().query(datatUri, new String[] { "data1", "mimetype" }, "contact_id=?",
						new String[] { contactId }, null);
				if (data != null) {
					HashMap<String, String> map = new HashMap<String, String>();

					while (data.moveToNext()) {
						String data1 = data.getString(0);
						String mimetype = data.getString(1);
						if ("vnd.android.cursor.item/phone_v2".equals(mimetype)) {
							map.put("phone", data1);
						} else if ("vnd.android.cursor.item/name".equals(mimetype)) {
							map.put("name", data1);
						}

					}
					list.add(map);
					data.close();
				}
			}

			rawContacts.close();
			// ontact_id從data中查詢出相應的聯絡人姓名和電話
		}
		return list;
	}

}
 

然後再寫一個item的佈局檔案，

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

    <TextView
        android:id="@+id/tv_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="10dp"
        android:text="TextView"
        android:textColor="#f00"
        android:textSize="20sp" />

    <TextView
        android:id="@+id/tv_phone"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="10dp"
        android:text="TextView"
        android:textColor="#000"
        android:textSize="18sp" />

</LinearLayout>