10.28学习

样本分析

监听home键，注册联系人监听器并获得联系人信息

获取通讯录并上传并向通讯录人发送信息

将本程序替换程序默认sms

从在线地址获取手机号码和下载地址

在线地址加解密处

为了加深理解，自己尝试写了一个获取联系人信息的demo

package com.example.sms;

import androidx.appcompat.app.AppCompatActivity;

import android.content.ContentResolver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.widget.ListView;

public class MainActivity extends AppCompatActivity {

    private ListView listView;
    private ContentResolver cr;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        getMsgs();
        getContacts();
    }

    private void getMsgs() {
        Uri uri = Uri.parse("content://sms/");//短信信息存储地址
        ContentResolver resolver = getContentResolver();
        //获取的是哪些列的信息
        Cursor cursor = resolver.query(uri, new String[]{"address","date","type","body"}, null, null, null);
        //Cursor数据库每行的集合
        while(cursor.moveToNext())
        {
            String address = cursor.getString(0);
            String date = cursor.getString(1);
            String type = cursor.getString(2);
            String body = cursor.getString(3);
            System.out.println("地址:" + address);
            System.out.println("时间:" + date);
            System.out.println("类型:" + type);
            System.out.println("内容:" + body);
            System.out.println("======================");
        }
        cursor.close();
    }
    private void getContacts(){
        //①查询raw_contacts表获得联系人的id
        ContentResolver resolver = getContentResolver();
        Uri uri = ContactsContract.CommonDataKinds.Phone.CONTENT_URI;
        //查询联系人数据
        Cursor cursor = resolver.query(uri, null, null, null, null);
        while(cursor.moveToNext())
        {
            //获取联系人姓名,手机号码
            String cName = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
            String cNum = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
            System.out.println("姓名:" + cName);
            System.out.println("号码:" + cNum);
            System.out.println("======================");
        }
        cursor.close();
    }
}