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
- 监听状态改变
- 滚动到最底部,最后一个listView的条目可见
- 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();
}
}
以上是 Android项目实现黑名单拦截效果 的全部内容， 来源链接： utcz.com/z/329832.html
