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(); } }
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。