Android项目实现黑名单拦截效果

本文实例讲述了Android编程中黑名单的实现方法。分享给大家供大家参考，具体如下：

1,黑名单数据库创建

三个字段(_id 自增长字段 phone 黑名单号码 mode 拦截类型)

创建表的sql语句

create table blacknumber (_id integer primary key autoincrement , phone varchar(20), mode varchar(5));

结合项目,去创建数据库,以及相应的表

2.BlackNumberDao

BlackNumberDao单例模式

package com.itheima.mobilesafe74.db.dao;

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

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;

import com.itheima.mobilesafe74.db.BlackNumberOpenHelper;
import com.itheima.mobilesafe74.db.domain.BlackNumberInfo;

public class BlackNumberDao {
  private BlackNumberOpenHelper blackNumberOpenHelper;
  //BlackNumberDao单例模式
  //1,私有化构造方法
  private BlackNumberDao(Context context){
    //创建数据库已经其表机构
    blackNumberOpenHelper = new BlackNumberOpenHelper(context);
  }
  //2,声明一个当前类的对象
  private static BlackNumberDao blackNumberDao = null;
  //3,提供一个静态方法,如果当前类的对象为空,创建一个新的
  public static BlackNumberDao getInstance(Context context){
    if(blackNumberDao == null){
      blackNumberDao = new BlackNumberDao(context);
    }
    return blackNumberDao;
  }

  /**增加一个条目
   * @param phone  拦截的电话号码
   * @param mode  拦截类型(1:短信  2:电话  3:拦截所有(短信+电话))
   */
  public void insert(String phone,String mode){
    //1,开启数据库,准备做写入操作
    SQLiteDatabase db = blackNumberOpenHelper.getWritableDatabase();

    ContentValues values = new ContentValues();
    values.put("phone", phone);
    values.put("mode", mode);
    db.insert("blacknumber", null, values);

    db.close();
  }

  /**从数据库中删除一条电话号码
   * @param phone  删除电话号码
   */
  public void delete(String phone){
    SQLiteDatabase db = blackNumberOpenHelper.getWritableDatabase();

    db.delete("blacknumber", "phone = ?", new String[]{phone});

    db.close();
  }

  /**
   * 根据电话号码去,更新拦截模式
   * @param phone  更新拦截模式的电话号码
   * @param mode  要更新为的模式(1:短信  2:电话  3:拦截所有(短信+电话)
   */
  public void update(String phone,String mode){
    SQLiteDatabase db = blackNumberOpenHelper.getWritableDatabase();

    ContentValues contentValues = new ContentValues();
    contentValues.put("mode", mode);

    db.update("blacknumber", contentValues, "phone = ?", new String[]{phone});

    db.close();
  }

  /**
   * @return  查询到数据库中所有的号码以及拦截类型所在的集合
   */
  public List<BlackNumberInfo> findAll(){
    SQLiteDatabase db = blackNumberOpenHelper.getWritableDatabase();

    Cursor cursor = db.query("blacknumber", new String[]{"phone","mode"}, null, null, null, null, "_id desc");
    List<BlackNumberInfo> blackNumberList = new ArrayList<BlackNumberInfo>();
    while(cursor.moveToNext()){
      BlackNumberInfo blackNumberInfo = new BlackNumberInfo();
      blackNumberInfo.phone = cursor.getString(0);
      blackNumberInfo.mode = cursor.getString(1);
      blackNumberList.add(blackNumberInfo);
    }
    cursor.close();
    db.close();

    return blackNumberList;
  }

  /**
   * 每次查询20条数据
   * @param index  查询的索引值
   */
  public List<BlackNumberInfo> find(int index){
    SQLiteDatabase db = blackNumberOpenHelper.getWritableDatabase();

    Cursor cursor = db.rawQuery("select phone,mode from blacknumber order by _id desc limit ?,20;", new String[]{index+""});

    List<BlackNumberInfo> blackNumberList = new ArrayList<BlackNumberInfo>();
    while(cursor.moveToNext()){
      BlackNumberInfo blackNumberInfo = new BlackNumberInfo();
      blackNumberInfo.phone = cursor.getString(0);
      blackNumberInfo.mode = cursor.getString(1);
      blackNumberList.add(blackNumberInfo);
    }
    cursor.close();
    db.close();

    return blackNumberList;
  }

  /**
   * @return  数据库中数据的总条目个数,返回0代表没有数据或异常
   */
  public int getCount(){
    SQLiteDatabase db = blackNumberOpenHelper.getWritableDatabase();
    int count = 0;
    Cursor cursor = db.rawQuery("select count(*) from blacknumber;", null);
    if(cursor.moveToNext()){
      count = cursor.getInt(0);
    }

    cursor.close();
    db.close();
    return count;
  }

  /**
   * @param phone  作为查询条件的电话号码
   * @return  传入电话号码的拦截模式  1:短信  2:电话  3:所有  0:没有此条数据
   */
  public int getMode(String phone){
    SQLiteDatabase db = blackNumberOpenHelper.getWritableDatabase();
    int mode = 0;
    Cursor cursor = db.query("blacknumber", new String[]{"mode"}, "phone = ?", new String[]{phone}, null, null,null);
    if(cursor.moveToNext()){
      mode = cursor.getInt(0);
    }

    cursor.close();
    db.close();
    return mode;
  }
}

3,加载更多的触发条件

1. 监听状态改变
2. 滚动到最底部,最后一个listView的条目可见
3. 滚动状态发生改变 滚动------>停止(空闲)

加载下一页数据完成后,需要添加到上一页数据的最后面

//监听其滚动状态
lv_blacknumber.setOnScrollListener(new OnScrollListener() {
  //滚动过程中,状态发生改变调用方法()
  @Override
  public void onScrollStateChanged(AbsListView view, int scrollState) {
//       OnScrollListener.SCROLL_STATE_FLING 飞速滚动
//       OnScrollListener.SCROLL_STATE_IDLE  空闲状态
//       OnScrollListener.SCROLL_STATE_TOUCH_SCROLL 拿手触摸着去滚动状态

    if(mBlackNumberList!=null){
      //条件一:滚动到停止状态
      //条件二:最后一个条目可见(最后一个条目的索引值>=数据适配器中集合的总条目个数-1)
      if(scrollState == OnScrollListener.SCROLL_STATE_IDLE
          && lv_blacknumber.getLastVisiblePosition()>=mBlackNumberList.size()-1
          && !mIsLoad){
        /*mIsLoad防止重复加载的变量
        如果当前正在加载mIsLoad就会为true,本次加载完毕后,再将mIsLoad改为false
        如果下一次加载需要去做执行的时候,会判断上诉mIsLoad变量,是否为false,如果为true,就需要等待上一次加载完成,将其值
        改为false后再去加载*/

        //如果条目总数大于集合大小的时,才可以去继续加载更多
        if(mCount>mBlackNumberList.size()){
          //加载下一页数据
          new Thread(){
            public void run() {
              //1,获取操作黑名单数据库的对象
              mDao = BlackNumberDao.getInstance(getApplicationContext());
              //2,查询部分数据
              List<BlackNumberInfo> moreData = mDao.find(mBlackNumberList.size());
              //3,添加下一页数据的过程
              mBlackNumberList.addAll(moreData);
              //4,通知数据适配器刷新
              mHandler.sendEmptyMessage(0);
            }
          }.start();
        }
      }
    }

  }

  //滚动过程中调用方法
  @Override
  public void onScroll(AbsListView view, int firstVisibleItem,
      int visibleItemCount, int totalItemCount) {

  }
});

4.拦截短信

短信在接受的时候,广播发送,监听广播接受者,拦截短信(有序)
将广播的优先级级别提高到最高 (1000)

5.拦截电话

有电话拨入,处于响铃状态,响铃状态通过代码去挂断电话(aidl,反射),拦截电话
挂断电话号码的方法,放置在了aidl文件中名称为endCall

在此处去查看TelePhoneManager源码,去查找获取ITelephony对象的方法

ServiceManager此类android对开发者隐藏,所以不能去直接调用其方法,所以需要反射调用

ITelephony.Stub.asInterface(ServiceManager.getService(Context.TELEPHONY_SERVICE));

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

//1,获取ServiceManager字节码文件
Class<?> clazz = Class.forName("android.os.ServiceManager");
//2,获取方法
Method method = clazz.getMethod("getService", String.class);
//3,反射调用此方法
IBinder iBinder = (IBinder) method.invoke(null, Context.TELEPHONY_SERVICE);
//4,调用获取aidl文件对象方法
ITelephony iTelephony = ITelephony.Stub.asInterface(iBinder);
//5,调用在aidl中隐藏的endCall方法

BlackNumberService

iTelephony.endCall();
package com.itheima.mobilesafe74.service;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import com.android.internal.telephony.ITelephony;
import com.itheima.mobilesafe74.db.dao.BlackNumberDao;
import com.itheima.mobilesafe74.service.AddressService.MyPhoneStateListener;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.IBinder;
import android.telephony.PhoneStateListener;
import android.telephony.SmsMessage;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.view.WindowManager;

public class BlackNumberService extends Service {
  private InnerSmsReceiver mInnerSmsReceiver;
  private BlackNumberDao mDao;
  private TelephonyManager mTM;
  private MyPhoneStateListener mPhoneStateListener;
  @Override
  public void onCreate() {
    mDao = BlackNumberDao.getInstance(getApplicationContext());

    //拦截短信
    IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction("android.provider.Telephony.SMS_RECEIVED");
    intentFilter.setPriority(1000);

    mInnerSmsReceiver = new InnerSmsReceiver();
    registerReceiver(mInnerSmsReceiver, intentFilter);

    //监听电话的状态
    //1,电话管理者对象
    mTM = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
    //2,监听电话状态
    mPhoneStateListener = new MyPhoneStateListener();
    mTM.listen(mPhoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);

    super.onCreate();
  }

  class MyPhoneStateListener extends PhoneStateListener{
    //3,手动重写,电话状态发生改变会触发的方法
    @Override
    public void onCallStateChanged(int state, String incomingNumber) {
      switch (state) {
      case TelephonyManager.CALL_STATE_IDLE:
        break;
      case TelephonyManager.CALL_STATE_OFFHOOK:
        break;
      case TelephonyManager.CALL_STATE_RINGING:
        //挂断电话   aidl文件中去了
//        mTM.endCall();
        endCall(incomingNumber);
        break;
      }
      super.onCallStateChanged(state, incomingNumber);
    }
  }
  class InnerSmsReceiver extends BroadcastReceiver{
    @Override
    public void onReceive(Context context, Intent intent) {
      //获取短信内容,获取发送短信电话号码,如果此电话号码在黑名单中,并且拦截模式也为1(短信)或者3(所有),拦截短信
      //1,获取短信内容
      Object[] objects = (Object[]) intent.getExtras().get("pdus");
      //2,循环遍历短信过程
      for (Object object : objects) {
        //3,获取短信对象
        SmsMessage sms = SmsMessage.createFromPdu((byte[])object);
        //4,获取短信对象的基本信息
        String originatingAddress = sms.getOriginatingAddress();
        String messageBody = sms.getMessageBody();

        int mode = mDao.getMode(originatingAddress);

        if(mode == 1 || mode == 3){
          //拦截短信(android 4.4版本失效  短信数据库,删除)
          abortBroadcast();
        }
      }
    }
  }

  @Override
  public IBinder onBind(Intent arg0) {
    return null;
  }
  public void endCall(String phone) {
    int mode = mDao.getMode(phone);

    if(mode == 2 || mode == 3){
//      ITelephony.Stub.asInterface(ServiceManager.getService(Context.TELEPHONY_SERVICE));
      //ServiceManager此类android对开发者隐藏,所以不能去直接调用其方法,需要反射调用
      try {
        //1,获取ServiceManager字节码文件
        Class<?> clazz = Class.forName("android.os.ServiceManager");
        //2,获取方法
        Method method = clazz.getMethod("getService", String.class);
        //3,反射调用此方法
        IBinder iBinder = (IBinder) method.invoke(null, Context.TELEPHONY_SERVICE);
        //4,调用获取aidl文件对象方法
        ITelephony iTelephony = ITelephony.Stub.asInterface(iBinder);
        //5,调用在aidl中隐藏的endCall方法
        iTelephony.endCall();
      } catch (Exception e) {
        e.printStackTrace();
      }
    }
  }
  @Override
  public void onDestroy() {
    if(mInnerSmsReceiver!=null){
      unregisterReceiver(mInnerSmsReceiver);
    }
    super.onDestroy();
  }
}

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