主要還是用內容提供者ContentProvider來訪問數據庫

#1.首先布局文件

#2.在程序中實現

package com.wzw.contacts;

import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.ContentValues;
import android.database.Cursor;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Toast;

public class MainActivity extends Activity {

	private String tag="MainActivity";
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
	}

	public void queryContact(View v){
		
		Uri uri=Uri.parse("content://com.android.contacts/raw_contacts");
		Uri datauri=Uri.parse("content://com.android.contacts/data");
		Cursor cursor = getContentResolver().query(uri, new String[]{"_id"}, null, null, null);
		if(cursor!=null && cursor.getCount()>0){
			while(cursor.moveToNext()){
				//獲取raw_contact_id的值，然後再data表中讀取數據
				int id=cursor.getInt(0);
				String selection="raw_contact_id=?";
				String selectionArgs[]={String.valueOf(id)};
				Cursor c=getContentResolver().query(datauri, new String[]{"data1","mimetype"}, selection, selectionArgs, null);
				if(c!=null && c.getCount()>0){
					while(c.moveToNext()){
						//循環在data中讀取數據
						String mimetype=c.getString(1);
						String data=c.getString(0);
						if("vnd.android.cursor.item/email_v2".equals(mimetype)){
							Log.i(tag, "Email:"+data);
						}else if ("vnd.android.cursor.item/phone_v2".equals(mimetype)) {
							Log.i(tag, "聯系電話:"+data);
						}else if ("vnd.android.cursor.item/name".equals(mimetype)) {
							Log.i(tag, "聯系姓名:"+data);
						}
					}
				}
			}	
		}
		
	}
	public void addContact(View v){
		Uri uri=Uri.parse("content://com.android.contacts/raw_contacts");
		Uri datauri=Uri.parse("content://com.android.contacts/data");
		
		//1.取出raw_contacts中的最大id
		Cursor cursor=getContentResolver().query(uri, new String[]{"contact_id"}, null, null, "contact_id desc limit 1");
		if(cursor!=null && cursor.moveToFirst()){
			int contact_id=cursor.getInt(0)+1;
			cursor.close();
			//2.在raw_contacts添加一條ID
			ContentValues values=new ContentValues();
			values.put("contact_id", contact_id);
			getContentResolver().insert(uri, values);
			//3.根據上面的contact_id在data中添加三條記錄，分別是電話，聯系名字，郵箱
			//添加郵箱
			values=new ContentValues();
			values.put("mimetype", "vnd.android.cursor.item/email_v2");
			values.put("data1", "[email protected]");
			values.put("raw_contact_id", contact_id);
			getContentResolver().insert(datauri, values);
			
			//添加姓名
			values=new ContentValues();
			values.put("mimetype", "vnd.android.cursor.item/name");
			values.put("data1", "中國聯通");
			values.put("raw_contact_id", contact_id);
			getContentResolver().insert(datauri, values);
			
			//添加號碼
			values=new ContentValues();
			values.put("mimetype", "vnd.android.cursor.item/phone_v2");
			values.put("data1", "10010");
			values.put("raw_contact_id", contact_id);
			getContentResolver().insert(datauri, values);
			
			Toast.makeText(this, "添加成功,ID是"+contact_id, 0).show();
	}
		
	}
}

#3.另外在清單文件中添加讀寫聯系人權限