Android 实现电话号码（接听/拨号/短信）白名单

我遇到一个需求，需要实现电话号码的白名单，除了通讯录里的号码，所有来电短信都要屏蔽掉。

Android 7.0后提供了一个电话号码黑名单的功能，可以拦截对应号码的电话和短信，即Android N BlockedNumberContract原生黑名单。

所以我这里就直接利用这个模块的函数，再此之上增加白名单判断。

白名单电话接听拦截和短信拦截

这里直接利用BlockedNumberContract框架里的关键判断类BlockChecker，BlockChecker的isBlocked函数会返回一个bool值，根据这个bool值，BlockedNumberContract框架会决定是否拦截对应号码的电话和短信。

修改位置 frameworks\opt\telephony\src\java\com\android\internal\telephony\BlockChecker.java

   /**
     * Returns {@code true} if {@code phoneNumber} is blocked.
     * <p>
     * This method catches all underlying exceptions to ensure that this method never throws any
     * exception.
     */
    public static boolean isBlocked(Context context, String phoneNumber) {
        boolean isBlocked = false;
        long startTimeNano = System.nanoTime();

        try {
+        	//注释掉这部分原生判断，会读取BlockedNumberContract数据库里的名单作对比
+            // if (BlockedNumberContract.SystemContract.shouldSystemBlockNumber(
+           //         context, phoneNumber)) {
+            //     Rlog.d(TAG, phoneNumber + " is blocked.");
+            //     isBlocked = true;
+            // }

+             //新增一个shouldBlockNumber函数，这里可以根据自己需求，从什么数据库读取白名单来判断对应号码是否该拦截
+               if (shouldBlockNumber( context, phoneNumber)) {
+                Log.d(TAG, phoneNumber + " is blocked.");
+                isBlocked = true;
+            }
            

        } catch (Exception e) {
            Rlog.e(TAG, "Exception checking for blocked number: " + e);
           
        }

        int durationMillis = (int) ((System.nanoTime() - startTimeNano) / 1000000);
        if (durationMillis > 500 || VDBG) {
            Rlog.d(TAG, "Blocked number lookup took: " + durationMillis + " ms.");
        }
        return isBlocked;
    }

如果不想短信受控制，可以修改
frameworks/opt/telephony/src/java/com/android/internal/telephony/InboundSmsHandler.java

-            block = BlockChecker.isBlocked(mContext, tracker.getDisplayAddress());
+		    // not block 
+           // block = BlockChecker.isBlocked(mContext, tracker.getDisplayAddress());


-                        block = BlockChecker.isBlocked(mContext,
-                                cursor.getString(PDU_SEQUENCE_PORT_PROJECTION_INDEX_MAPPING
-                                        .get(DISPLAY_ADDRESS_COLUMN)));

+		// not block 
+                    //    block = BlockChecker.isBlocked(mContext,
+                    //            cursor.getString(PDU_SEQUENCE_PORT_PROJECTION_INDEX_MAPPING
+                    //                    .get(DISPLAY_ADDRESS_COLUMN)));

``` 


frameworks/opt/telephony/src/java/com/android/internal/telephony/WapPushOverSms.java
``` 
-                if (nInd.getFrom() != null
-                        && BlockChecker.isBlocked(mContext, nInd.getFrom().getString())) {
+
+		// not block 
+		// && BlockChecker.isBlocked(mContext, nInd.getFrom().getString())
+                if (nInd.getFrom() != null) {

电话拨号拦截

修改位置 proprietary/packages/services/Telecomm/src/com/android/server/telecom/CallIntentProcessor.java

    /**
     * Processes CALL, CALL_PRIVILEGED, and CALL_EMERGENCY intents.
     *
     * @param intent Call intent containing data about the handle to call.
     */
    static void processOutgoingCallIntent(
            Context context,
            CallsManager callsManager,
            Intent intent) {



            	    if (phoneNumber != null) {
            if (!PhoneNumberUtils.isUriNumber(phoneNumber)) {  
               phoneNumber = PhoneNumberUtils.convertAndStrip(phoneNumber);  
            }  
        }

+        if (shouldBlockNumber(context,phoneNumber)) {
+                
+                Log.d(CallIntentProcessor.class,phoneNumber + " is blocked.");
+
+                return;
+        }


    }