深入理解Activity——Token之旅

    ActivityRecord(ActivityManagerService _service, ProcessRecord _caller,
            int _launchedFromUid, String _launchedFromPackage, Intent _intent, String _resolvedType,
            ActivityInfo aInfo, Configuration _configuration,
            ActivityRecord _resultTo, String _resultWho, int _reqCode,
            boolean _componentSpecified, ActivityStackSupervisor supervisor,
            ActivityContainer container, Bundle options) {
        service = _service;
        <span style="color:#ff0000;">appToken = new Token(this);</span>
        ........
}

    final void startActivityLocked(ActivityRecord r, boolean newTask,
            boolean doResume, boolean keepCurTransition, Bundle options) {
            ......
            mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken,
                    r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen,
                    (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId,
                    r.info.configChanges, task.voiceSession != null, r.mLaunchTaskBehind);
            ......
    }

    public void addAppToken(int addPos, IApplicationToken token, int taskId, int stackId,
            int requestedOrientation, boolean fullscreen, boolean showWhenLocked, int userId,
            int configChanges, boolean voiceInteraction, boolean launchTaskBehind) {
            ......

        synchronized(mWindowMap) {
            AppWindowToken atoken = findAppWindowToken(token.asBinder());
            if (atoken != null) {
                Slog.w(TAG, "Attempted to add existing app token: " + token);
                return;
            }
            atoken = new AppWindowToken(this, token, voiceInteraction);
            ......
            Task task = mTaskIdToTask.get(taskId);
            if (task == null) {
                createTask(taskId, stackId, userId, atoken);
            } else {
                task.addAppToken(addPos, atoken);
            }
            mTokenMap.put(token.asBinder(), atoken);
            // Application tokens start out hidden.
            atoken.hidden = true;
            atoken.hiddenRequested = true;
            //dump();
        }
    }

    final boolean realStartActivityLocked(ActivityRecord r,
            ProcessRecord app, boolean andResume, boolean checkConfig)
            throws RemoteException {
            ......
            app.thread.scheduleLaunchActivity(new Intent(r.intent), r.appToken,
                    System.identityHashCode(r), r.info, new Configuration(mService.mConfiguration),
                    r.compat, r.launchedFromPackage, r.task.voiceInteractor, app.repProcState,
                    r.icicle, r.persistentState, results, newIntents, !andResume,
                    mService.isNextTransitionForward(), profilerInfo);
            ......
    }

        public final void scheduleLaunchActivity(Intent intent, IBinder token, int ident,
                ActivityInfo info, Configuration curConfig, CompatibilityInfo compatInfo,
                String referrer, IVoiceInteractor voiceInteractor, int procState, Bundle state,
                PersistableBundle persistentState, List<ResultInfo> pendingResults,
                List<ReferrerIntent> pendingNewIntents, boolean notResumed, boolean isForward,
                ProfilerInfo profilerInfo) {
            updateProcessState(procState, false);
            ActivityClientRecord r = new ActivityClientRecord();
            r.token = token;
            r.ident = ident;
            r.intent = intent;
            r.referrer = referrer;
            r.voiceInteractor = voiceInteractor;
            r.activityInfo = info;
            r.compatInfo = compatInfo;
            r.state = state;
            r.persistentState = persistentState;
            r.pendingResults = pendingResults;
            r.pendingIntents = pendingNewIntents;
            r.startsNotResumed = notResumed;
            r.isForward = isForward;
            r.profilerInfo = profilerInfo;
            updatePendingConfiguration(curConfig);
            sendMessage(H.LAUNCH_ACTIVITY, r);
        }

    public void setView(View view, WindowManager.LayoutParams attrs, View panelParentView) {
        synchronized (this) {
            if (mView == null) {
                mView = view;
                ......
                mWindowAttributes.copyFrom(attrs);
                ......
                try {
                    ......
                    res = mWindowSession.addToDisplay(mWindow, mSeq, mWindowAttributes,
                            getHostVisibility(), mDisplay.getDisplayId(),
                            mAttachInfo.mContentInsets, mAttachInfo.mStableInsets, mInputChannel);
                } catch (RemoteException e) {
                    ......
                } finally {
                    ......
                }
            ......
            }
        }
    }

    public int addWindow(Session session, IWindow client, int seq,
            WindowManager.LayoutParams attrs, int viewVisibility, int displayId,
            Rect outContentInsets, Rect outStableInsets, InputChannel outInputChannel) {
            ......
            boolean addToken = false;
            WindowToken token = mTokenMap.get(attrs.token);
            ......
            win = new WindowState(this, session, client, token,
                    attachedWindow, appOp[0], seq, attrs, viewVisibility, displayContent);

            mWindowMap.put(client.asBinder(), win);
            ......
    }

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