Android MTK平台 客制化系统来电界面(屏蔽 InCallUI 提供接口给客户自行展示来电去电页面)

OS: Android 8.1

需求分析

1、禁止系统来电铃声，提供接口给客户自己播放铃声

2、禁止系统拉起来去电页面(InCallActivity),消息通知客户拉起自己的来去电页面

3、禁止来电消息 Notification 显示(包括未接来电)，点击跳转至 InCallActivity(未接来电消息可通知客户或者将 PendingIntent 改成客户的)

上代码

1、系统来电铃声播放在 Telecomm 应用中，我们发现一般都是先听到铃声才看到 UI 被拉起，那是因为铃声在 Telecomm 中，UI 需要通过 InCallService 通知到 Dialer 中。

vendor\mediatek\proprietary\packages\services\Telecomm\src\com\android\server\telecom\Ringer.java

	public boolean startRinging(Call foregroundCall, boolean isHfpDeviceAttached) {
		//cczhegn add return for customer self control ringing, system ignore
         if (true) {
            return ;
         }
        if (foregroundCall == null) {
            /// M: ALPS03787956 Fix wtf log warning. @{
            /// Hand up the call immediately when ringing. Then the foreground call will
            /// change to null, but call audio is start ringing at the same time.
            /// Log.wtf will occur in this case.
            /// Solution:
            /// Call audio can handle this case, so change Log.wtf to Log.i here.
            Log.i(this, "startRinging called with null foreground call.");
            /// @}
            return false;
        }
        AudioManager audioManager =
                (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
        boolean isVolumeOverZero = audioManager.getStreamVolume(AudioManager.STREAM_RING) > 0;
        boolean shouldRingForContact = shouldRingForContact(foregroundCall.getContactUri());
        boolean isRingtonePresent = !(mRingtoneFactory.getRingtone(foregroundCall) == null);
        boolean isSelfManaged = foregroundCall.isSelfManaged();
			....
}
public void stopRinging() {
        //cczheng add return for customer self control ringing, system ignore
         if (true) {
            return ;
         }
        if (mRingingCall != null) {
            Log.addEvent(mRingingCall, LogUtils.Events.STOP_RINGER);
            mRingingCall = null;
        }
        if (mIsVibrating) {
            Log.addEvent(mVibratingCall, LogUtils.Events.STOP_VIBRATOR);
            mVibrator.cancel();
            mIsVibrating = false;
            mVibratingCall = null;
        }
    }

只需要将 startRinging() 和 stopRinging() 直接 return 即可，系统就不会响铃了。

2、提供播放铃声工具类 RingUtil 给客户

public class RingUtil {
    private static final String TAG = "RingUtil";
    private static Ringtone ringtone;
    private static Ringtone getRing(Context context){
        if (null == ringtone){
            Uri defaultRingtoneUri = RingtoneManager.getActualDefaultRingtoneUri(context, RingtoneManager.TYPE_RINGTONE);
            ringtone = RingtoneManager.getRingtone(context, defaultRingtoneUri);
        }
        return ringtone;
    }
    public static void startRing(Context context){
        getRing(context);
        if (!ringtone.isPlaying()){
            ringtone.play();
        }
    }
    public static void stopRing(Context context){
        getRing(context);
        if (ringtone.isPlaying()){
            ringtone.stop();
        }
    }
}

3、禁止系统拉起来去电页面

刚刚上面说到 Telecom 和 Dialer 主要通过 InCallService 通信，重要的两个方法 onCallAdded、onCallRemoved，从字面意思很容易理解，当 call 加入和移除时回调。

InCallPresenter 可以说是 Call 的管理中心，来电去电都经过这处理，所以我们在此处修改比较容易

vendor\mediatek\proprietary\packages\apps\Dialer\java\com\android\incallui\InCallPresenter.java

//来电拉起 InCallActivity 的地方
public void showInCall(boolean showDialpad, boolean newOutgoingCall) {
    LogUtil.d("InCallPresenter.showInCall", "Showing InCallActivity");
    //cczheng  annotaion don't show sysytem InCallActivity
    //mContext.startActivity(
        //InCallActivity.getIntent(
            //mContext, showDialpad, newOutgoingCall, false /* forFullScreen */));
  }
//去电拉起 InCallActivity 的地方
public void maybeStartRevealAnimation(Intent intent) {
    LogUtil.e("InCallPresenter.OutgoingCall", "maybeStartRevealAnimation");
    if (intent == null || mInCallActivity != null) {
      return;
    }
    final Bundle extras = intent.getBundleExtra(TelecomManager.EXTRA_OUTGOING_CALL_EXTRAS);
    if (extras == null) {
      // Incoming call, just show the in-call UI directly.
      return;
    }
    if (extras.containsKey(android.telecom.Call.AVAILABLE_PHONE_ACCOUNTS)) {
      // Account selection dialog will show up so don't show the animation.
      return;
    }
    final PhoneAccountHandle accountHandle =
        intent.getParcelableExtra(TelecomManager.EXTRA_PHONE_ACCOUNT_HANDLE);
    final Point touchPoint = extras.getParcelable(TouchPointManager.TOUCH_POINT);
    InCallPresenter.getInstance().setBoundAndWaitingForOutgoingCall(true, accountHandle);
    //cczheng  annotaion don't show sysytem InCallActivity
    LogUtil.e("InCallPresenter.OutgoingCall", "OutgoingCall is preper start inCallActivity.");
    //final Intent activityIntent =
        //InCallActivity.getIntent(mContext, false, true, false /* forFullScreen */);
    //activityIntent.putExtra(TouchPointManager.TOUCH_POINT, touchPoint);
    //mContext.startActivity(activityIntent);
  }

4、消息通知客户来去电消息

为了简单我们采用广播的方式，由于 8.1 中静态注册广播有限制，为了突破限制，我们需要在发送广播时加上 intent.addFlags(0x01000000);

vendor\mediatek\proprietary\packages\apps\Dialer\java\com\android\incallui\InCallPresenter.java

 String number;
  public void onCallAdded(final android.telecom.Call call) {
    LatencyReport latencyReport = new LatencyReport(call);
    if (shouldAttemptBlocking(call)) {
      maybeBlockCall(call, latencyReport);
    } else {
      if (call.getDetails().hasProperty(CallCompat.Details.PROPERTY_IS_EXTERNAL_CALL)) {
        mExternalCallList.onCallAdded(call);
      } else {
        latencyReport.onCallBlockingDone();
        mCallList.onCallAdded(mContext, call, latencyReport);
      }
    }
    // Since a call has been added we are no longer waiting for Telecom to send us a call.
    setBoundAndWaitingForOutgoingCall(false, null);
    call.registerCallback(mCallCallback);
    //cczheng add when incall or outcall added notify user can start there incallui
    number = TelecomCallUtil.getNumber(call);
    if (isOutGoingCall) {
      LogUtil.e("InCallPresenter.OutgoingCall", "OutgoingCall number=="+number);
      Intent intent = new Intent("com.android.outgoingcall.wireless");
      intent.putExtra("outgoingNumber", number);
      intent.addFlags(0x01000000);
      mContext.sendBroadcast(intent);
    }else{
      LogUtil.i("InCallPresenter.IncomingCall", "IncomingCall number=="+number);
      Intent intentcc = new Intent("com.android.incomingcall.wireless");
      intentcc.putExtra("incomingNumber", number);
      intentcc.addFlags(0x01000000);
      mContext.sendBroadcast(intentcc);
    }
  }

在 onCallAdded() 方法中，可以看到我们添加了 isOutGoingCall 变量判读是来电还是去电，分别对应不用的 action，通过 TelecomCallUtil 获取当前 call 的 number 顺带发送

5、来去电类型 isOutGoingCall 区分

回到刚刚的屏蔽去电拉起页面的方法 maybeStartRevealAnimation() 中，其中有获取 EXTRA_OUTGOING_CALL_EXTRAS 参数，经过验证确实来电不带此参数，去电带参数

vendor\mediatek\proprietary\packages\apps\Dialer\java\com\android\incallui\InCallPresenter.java

//cczheng add for distinguish incall or outgogingcall
  private boolean isOutGoingCall;
  public void maybeStartRevealAnimation(Intent intent) {
    LogUtil.e("InCallPresenter.OutgoingCall", "maybeStartRevealAnimation");
    if (intent == null || mInCallActivity != null) {
      return;
    }
    final Bundle extras = intent.getBundleExtra(TelecomManager.EXTRA_OUTGOING_CALL_EXTRAS);
    if (extras == null) {
      // Incoming call, just show the in-call UI directly.
      isOutGoingCall = false;//cczheng add for incomingcall
      return;
    }
    if (extras.containsKey(android.telecom.Call.AVAILABLE_PHONE_ACCOUNTS)) {
      // Account selection dialog will show up so don't show the animation.
      return;
    }
    final PhoneAccountHandle accountHandle =
        intent.getParcelableExtra(TelecomManager.EXTRA_PHONE_ACCOUNT_HANDLE);
    final Point touchPoint = extras.getParcelable(TouchPointManager.TOUCH_POINT);
    InCallPresenter.getInstance().setBoundAndWaitingForOutgoingCall(true, accountHandle);
    LogUtil.e("InCallPresenter.OutgoingCall", "OutgoingCall is preper start inCallActivity.");
    isOutGoingCall = true;//cczhegn add for outgongcall
    //final Intent activityIntent =
        //InCallActivity.getIntent(mContext, false, true, false /* forFullScreen */);
    //activityIntent.putExtra(TouchPointManager.TOUCH_POINT, touchPoint);
    //mContext.startActivity(activityIntent);
  }

6、禁止来电消息 Notification 显示

vendor\mediatek\proprietary\packages\apps\Dialer\java\com\android\incallui\StatusBarNotifier.java

@RequiresPermission(Manifest.permission.READ_PHONE_STATE)
  public void updateNotification(CallList callList) {
    ///cczheng annotaion for don't show incallnotification when pstnoverlayactivity in font
    //updateInCallNotification(callList);
  }

直接注释 updateInCallNotification()

7、未接来电消息处理

回到 Telecomm 中，MissedCallNotifierImpl 负责管理未接来电消息，如果将 android 自己的 Notification 屏蔽，通知客户自己去显示，略微麻烦，用户需要自己建数据库保存通知已读未读状态，

因为重启需要查询判断是否需要再次显示。这样你可以在 showMissedCallNotification() 中直接发送通知后 return。我们此处采用第二种方式，修改系统 Notification 的 PendingIntent 为客户

vendor\mediatek\proprietary\packages\services\Telecomm\src\com\android\server\telecom\ui\MissedCallNotifierImpl.java

private PendingIntent createCallLogPendingIntent(UserHandle userHandle) {
		//cczheng add for jump to customer app
		try {
            Intent intentc = mContext.getPackageManager().getLaunchIntentForPackage("your customer app packageName");
	        return PendingIntent.getActivity(mContext, 11, intentc, 0);
        }catch (Exception e){
             e.printStackTrace();
			Intent intent = new Intent(Intent.ACTION_VIEW, null);
	        intent.setType(Calls.CONTENT_TYPE);
	        TaskStackBuilder taskStackBuilder = TaskStackBuilder.create(mContext);
	        taskStackBuilder.addNextIntent(intent);
	        return taskStackBuilder.getPendingIntent(0, 0, null, userHandle);
        }
    }

8、按下音量键和电源键静音

系统播放来电铃声时，此时按下音量键或电源键，默认都会停止播放铃声。但这是系统播放铃声的情况下，现在我们已经开发给

客户自己去播放铃声了，所以原来的逻辑就会失效，只能客户自己去停止铃声，但是来电页面响铃中，客户是监听不到音量键或

电源键事件的，只能在系统通知了。

vendor\mediatek\proprietary\packages\services\Telecomm\src\com\android\server\telecom\TelecomServiceImpl.java

@Override
      public void silenceRinger(String callingPackage) {
          try {
              Log.startSession("TSI.sR");
              synchronized (mLock) {
                  enforcePermissionOrPrivilegedDialer(MODIFY_PHONE_STATE, callingPackage);
                  long token = Binder.clearCallingIdentity();
                  try {
                      Log.i(this, "Silence Ringer requested by %s", callingPackage);
                      //cczheng add for notify custmer press valume/power need silence ringer
                      mContext.sendBroadcast(new Intent("com.android.key.silence.ringer"));
                      mCallsManager.getCallAudioManager().silenceRingers();
                      mCallsManager.getInCallController().silenceRinger();
                  } finally {
                      Binder.restoreCallingIdentity(token);
                  }
              }
          } finally {
              Log.endSession();
          }
      }