編輯:關於android開發
我覺得寫文章就得寫得有用一些的,必須要有自己的思想,關於來電去電監聽將按照下面三個問題展開
1、監聽來電去電有什麼用?
2、怎麼監聽,來電去電監聽方式一樣嗎?
3、實戰,有什麼需要特別注意地方?
監聽來電去電能干什麼
1、能夠對監聽到的電話做個標識,告訴用戶這個電話是詐騙、推銷、廣告什麼的
2、能夠針對那些特殊的電話進行自動掛斷,避免打擾到用戶
來電去電的監聽方式(不一樣的方式)
1、來電監聽(PhoneStateListener)
來電監聽是使用PhoneStateListener類,使用方式是,將PhoneStateListener對象(一般是自己繼承PhoneStateListener類完成一些封裝)注冊到系統電話管理服務中去(TelephonyManager)
然後通過PhoneStateListener的回調方法onCallStateChanged(int state, String incomingNumber) 實現來電的監聽 (詳細實現可以參考後面給出的拓展閱讀部分)
注冊監聽
// phoneServiceName是服務名,一般是 "phone" --> Context.TELEPHONY_SERVICE TelephonyManager telephonyManager = (TelephonyManager) mContext.getSystemService(phoneServiceName); if(telephonyManager != null) { try { // 注冊來電監聽 telephonyManager.listen(mTelephonyListener, PhoneStateListener.LISTEN_CALL_STATE); } catch(Exception e) { // 異常捕捉 } }
PhoneStateListener的onCallStateChanged方法監聽來電狀態
@Override public void onCallStateChanged(int state, String incomingNumber) { switch (state) { case TelephonyManager.CALL_STATE_IDLE: // 電話掛斷 break; case TelephonyManager.CALL_STATE_OFFHOOK: // 來電響鈴 break; case TelephonyManager.CALL_STATE_RINGING: // 來電接通 break; default: break; } }
三種狀態源碼解釋
/** Device call state: No activity. */ public static final int CALL_STATE_IDLE = 0; // 電話掛斷 /** Device call state: Ringing. A new call arrived and is * ringing or waiting. In the latter case, another call is * already active. */ public static final int CALL_STATE_RINGING = 1; // 來電響鈴 /** Device call state: Off-hook. At least one call exists * that is dialing, active, or on hold, and no calls are ringing * or waiting. */ public static final int CALL_STATE_OFFHOOK = 2; // 來電接通
2、去電監聽(通過廣播來實現)
// OutgoingCallListener繼承一個BroadcastReceiver <receiver android:name="com.test.OutgoingCallListener" > <intent-filter> <action android:name="android.intent.action.PHONE_STATE"/> <action android:name="android.intent.action.NEW_OUTGOING_CALL" /> </intent-filter> </receiver>
實戰,有什麼需要特別注意地方
1、雙卡雙待的手機怎麼獲取
對於雙卡手機,每張卡都對應一個Service和一個FirewallPhoneStateListener,需要給每個服務注冊自己的FirewallPhoneStateListener,服務的名稱還會有點變化,廠商可能會修改
public ArrayList<String> getMultSimCardInfo() { // 獲取雙卡的信息,這個也是經驗嘗試出來的,不知道其他廠商有什麼坑 ArrayList<String> phoneServerList = new ArrayList<String>(); for(int i = 1; i < 3; i++) { try { String phoneServiceName; if (MiuiUtils.isMiuiV6()) { phoneServiceName = "phone." + String.valueOf(i-1); } else { phoneServiceName = "phone" + String.valueOf(i); } // 嘗試獲取服務看是否能獲取到 IBinder iBinder = ServiceManager.getService(phoneServiceName); if(iBinder == null) continue; ITelephony iTelephony = ITelephony.Stub.asInterface(iBinder); if(iTelephony == null) continue; phoneServerList.add(phoneServiceName); } catch(Exception e) { e.printStackTrace(); } } // 這個是默認的 phoneServerList.add(Context.TELEPHONY_SERVICE); return phoneServerList; }
2、掛斷電話
掛斷電話使用系統服務提供的接口去掛斷,但是掛斷電話是個並不能保證成功的方法,所以會有多種方式掛斷同時使用,下面提供
public boolean endCall() { boolean callSuccess = false; ITelephony telephonyService = getTelephonyService(); try { if (telephonyService != null) { callSuccess = telephonyService.endCall(); } } catch (RemoteException e) { e.printStackTrace(); } catch (Exception e){ e.printStackTrace(); } if (callSuccess == false) { Executor eS = Executors.newSingleThreadExecutor(); eS.execute(new Runnable() { @Override public void run() { disconnectCall(); } }); callSuccess = true; } return callSuccess; } private boolean disconnectCall() { Runtime runtime = Runtime.getRuntime(); try { runtime.exec("service call phone 5 \n"); } catch (Exception exc) { exc.printStackTrace(); return false; } return true; } // 使用endCall掛斷不了,再使用killCall反射調用再掛一次 public static boolean killCall(Context context) { try { // Get the boring old TelephonyManager TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); // Get the getITelephony() method Class classTelephony = Class.forName(telephonyManager.getClass().getName()); Method methodGetITelephony = classTelephony.getDeclaredMethod("getITelephony"); // Ignore that the method is supposed to be private methodGetITelephony.setAccessible(true); // Invoke getITelephony() to get the ITelephony interface Object telephonyInterface = methodGetITelephony.invoke(telephonyManager); // Get the endCall method from ITelephony Class telephonyInterfaceClass = Class.forName(telephonyInterface.getClass().getName()); Method methodEndCall = telephonyInterfaceClass.getDeclaredMethod("endCall"); // Invoke endCall() methodEndCall.invoke(telephonyInterface); } catch (Exception ex) { // Many things can go wrong with reflection calls return false; } return true; }
3、掛斷電話需要權限
<uses-permission android:name="android.permission.CALL_PHONE" />
拓展閱讀:
這篇文章重點從整體框架機制方面來介紹電話監聽
http://www.cnblogs.com/bastard/archive/2012/11/23/2784559.html
這篇文章重點介紹一些api方法已經變量的含義
http://blog.csdn.net/skiffloveblue/article/details/7491618
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