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 Android教程網 >> Android技術 >> Android編程入門 >> Android來電監聽和去電監聽

Android來電監聽和去電監聽

編輯:Android編程入門

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;
    }
    mCallState = state;
}

  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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