顶栏phone.StatusBar中makeStatusBarView函数分析（未完）

分类：Android, Java 阅读 (1,530)

6月 012020

转载请注明原文地址：http://bcoder.com/java/analyze-of-top-bar-phone-statusbar-function-makestatusbarview

本文基于Android8.1系统

    protected void makeStatusBarView() {
        final Context context = mContext;
        // 用于重新获取mDisplayMetrics和mCurrentDisplaySize
        updateDisplaySize(); // populates mDisplayMetrics
        // 重新加载QSPanel、NotificationPanel等的资源，因为可能configuration可能会有变化
        updateResources();
        updateTheme();

        // 用布局R.layout.super_status_bar填充mStatusBarWindow
        inflateStatusBarWindow(context);
        mStatusBarWindow.setService(this);
        mStatusBarWindow.setOnTouchListener(getStatusBarWindowTouchListener());

        // mNotificationPanel用于显示各种各种通知的根Panel
        // TODO: Deal with the ugliness that comes from having some of the statusbar broken out
        // into fragments, but the rest here, it leaves some awkward lifecycle and whatnot.
        mNotificationPanel = (NotificationPanelView) mStatusBarWindow.findViewById(
                R.id.notification_panel);
        // mStackScroller用于显示列表形式的系统通知
        mStackScroller = (NotificationStackScrollLayout) mStatusBarWindow.findViewById(
                R.id.notification_stack_scroller);
        mNotificationPanel.setStatusBar(this);
        mNotificationPanel.setGroupManager(mGroupManager);
        mAboveShelfObserver = new AboveShelfObserver(mStackScroller);
        mAboveShelfObserver.setListener(mStatusBarWindow.findViewById(
                R.id.notification_container_parent));
        mKeyguardStatusBar = (KeyguardStatusBarView) mStatusBarWindow.findViewById(R.id.keyguard_header);

        mNotificationIconAreaController = SystemUIFactory.getInstance()
                .createNotificationIconAreaController(context, this);
        inflateShelf();
        mNotificationIconAreaController.setupShelf(mNotificationShelf);
        Dependency.get(DarkIconDispatcher.class).addDarkReceiver(mNotificationIconAreaController);
        FragmentHostManager.get(mStatusBarWindow)
                .addTagListener(CollapsedStatusBarFragment.TAG, (tag, fragment) -> {
                    CollapsedStatusBarFragment statusBarFragment =
                            (CollapsedStatusBarFragment) fragment;
                    statusBarFragment.initNotificationIconArea(mNotificationIconAreaController);
                    mStatusBarView = (PhoneStatusBarView) fragment.getView();
                    mStatusBarView.setBar(this);
                    mStatusBarView.setPanel(mNotificationPanel);
                    mStatusBarView.setScrimController(mScrimController);
                    mStatusBarView.setBouncerShowing(mBouncerShowing);
                    setAreThereNotifications();
                    checkBarModes();
                }).getFragmentManager()
                .beginTransaction()
                .replace(R.id.status_bar_container, new CollapsedStatusBarFragment(),
                        CollapsedStatusBarFragment.TAG)
                .commit();
        mIconController = Dependency.get(StatusBarIconController.class);

        mHeadsUpManager = new HeadsUpManager(context, mStatusBarWindow, mGroupManager);
        mHeadsUpManager.setBar(this);
        mHeadsUpManager.addListener(this);
        mHeadsUpManager.addListener(mNotificationPanel);
        mHeadsUpManager.addListener(mGroupManager);
        mHeadsUpManager.addListener(mVisualStabilityManager);
        mNotificationPanel.setHeadsUpManager(mHeadsUpManager);
        mNotificationData.setHeadsUpManager(mHeadsUpManager);
        mGroupManager.setHeadsUpManager(mHeadsUpManager);
        mHeadsUpManager.setVisualStabilityManager(mVisualStabilityManager);

        if (MULTIUSER_DEBUG) {
            mNotificationPanelDebugText = (TextView) mNotificationPanel.findViewById(
                    R.id.header_debug_info);
            mNotificationPanelDebugText.setVisibility(View.VISIBLE);
        }

        try {
            boolean showNav = mWindowManagerService.hasNavigationBar();
            if (DEBUG) Log.v(TAG, "hasNavigationBar=" + showNav);
            if (showNav) {
                createNavigationBar();
            }
        } catch (RemoteException ex) {
            // no window manager? good luck with that
        }

        // figure out which pixel-format to use for the status bar.
        mPixelFormat = PixelFormat.OPAQUE;

        // 通知列表框
        mStackScroller.setLongPressListener(getNotificationLongClicker());
        mStackScroller.setStatusBar(this);
        mStackScroller.setGroupManager(mGroupManager);
        mStackScroller.setHeadsUpManager(mHeadsUpManager);
        mGroupManager.setOnGroupChangeListener(mStackScroller);
        mVisualStabilityManager.setVisibilityLocationProvider(mStackScroller);

        // 没有通知提示框
        inflateEmptyShadeView();
        // 清除所有通知提示框
        inflateDismissView();
        mExpandedContents = mStackScroller;

        // 包含多媒体插图、图片的View？不知道是干啥用的
        mBackdrop = (BackDropView) mStatusBarWindow.findViewById(R.id.backdrop);
        mBackdropFront = (ImageView) mBackdrop.findViewById(R.id.backdrop_front);
        mBackdropBack = (ImageView) mBackdrop.findViewById(R.id.backdrop_back);

        // 字面翻译：锁屏壁纸
        if (ENABLE_LOCKSCREEN_WALLPAPER) {
            mLockscreenWallpaper = new LockscreenWallpaper(mContext, this, mHandler);
        }

        mKeyguardIndicationController =
                SystemUIFactory.getInstance().createKeyguardIndicationController(mContext,
                (ViewGroup) mStatusBarWindow.findViewById(R.id.keyguard_indication_area),
                mNotificationPanel.getLockIcon());
        mNotificationPanel.setKeyguardIndicationController(mKeyguardIndicationController);


        mAmbientIndicationContainer = mStatusBarWindow.findViewById(
                R.id.ambient_indication_container);

        // set the initial view visibility
        setAreThereNotifications();

        // TODO: Find better place for this callback.
        mBatteryController.addCallback(new BatteryStateChangeCallback() {
            @Override
            public void onPowerSaveChanged(boolean isPowerSave) {
                mHandler.post(mCheckBarModes);
                if (mDozeServiceHost != null) {
                    mDozeServiceHost.firePowerSaveChanged(isPowerSave);
                }
            }

            @Override
            public void onBatteryLevelChanged(int level, boolean pluggedIn, boolean charging) {
                // noop
            }
        });

        mLightBarController = Dependency.get(LightBarController.class);
        if (mNavigationBar != null) {
            mNavigationBar.setLightBarController(mLightBarController);
        }

        ScrimView scrimBehind = (ScrimView) mStatusBarWindow.findViewById(R.id.scrim_behind);
        ScrimView scrimInFront = (ScrimView) mStatusBarWindow.findViewById(R.id.scrim_in_front);
        View headsUpScrim = mStatusBarWindow.findViewById(R.id.heads_up_scrim);
        mScrimController = SystemUIFactory.getInstance().createScrimController(mLightBarController,
                scrimBehind, scrimInFront, headsUpScrim, mLockscreenWallpaper,
                scrimsVisible -> {
                    if (mStatusBarWindowManager != null) {
                        mStatusBarWindowManager.setScrimsVisible(scrimsVisible);
                    }
                });
        if (mScrimSrcModeEnabled) {
            Runnable runnable = new Runnable() {
                @Override
                public void run() {
                    boolean asSrc = mBackdrop.getVisibility() != View.VISIBLE;
                    mScrimController.setDrawBehindAsSrc(asSrc);
                    mStackScroller.setDrawBackgroundAsSrc(asSrc);
                }
            };
            mBackdrop.setOnVisibilityChangedRunnable(runnable);
            runnable.run();
        }
        mHeadsUpManager.addListener(mScrimController);
        mStackScroller.setScrimController(mScrimController);
        mDozeScrimController = new DozeScrimController(mScrimController, context);

        // Other icons
        mVolumeComponent = getComponent(VolumeComponent.class);

        mNotificationPanel.setUserSetupComplete(mUserSetup);
        if (UserManager.get(mContext).isUserSwitcherEnabled()) {
            createUserSwitcher();
        }

        // 配置快速设置小按钮的面板
        View container = mStatusBarWindow.findViewById(R.id.qs_frame);
        if (container != null) {
            FragmentHostManager fragmentHostManager = FragmentHostManager.get(container);
            ExtensionFragmentListener.attachExtensonToFragment(container, QS.TAG, R.id.qs_frame,
                    Dependency.get(ExtensionController.class).newExtension(QS.class)
                            .withPlugin(QS.class)
                            .withFeature(
                                    PackageManager.FEATURE_AUTOMOTIVE, () -> new CarQSFragment())
                            .withDefault(() -> new QSFragment())
                            .build());
            final QSTileHost qsh = SystemUIFactory.getInstance().createQSTileHost(mContext, this,
                    mIconController);
            mBrightnessMirrorController = new BrightnessMirrorController(mStatusBarWindow,
                    mScrimController);
            fragmentHostManager.addTagListener(QS.TAG, (tag, f) -> {
                QS qs = (QS) f;
                if (qs instanceof QSFragment) {
                    ((QSFragment) qs).setHost(qsh);
                    mQSPanel = ((QSFragment) qs).getQsPanel();
                    mQSPanel.setBrightnessMirror(mBrightnessMirrorController);
                    mKeyguardStatusBar.setQSPanel(mQSPanel);
                }
            });
        }

        mReportRejectedTouch = mStatusBarWindow.findViewById(R.id.report_rejected_touch);
        if (mReportRejectedTouch != null) {
            updateReportRejectedTouchVisibility();
            mReportRejectedTouch.setOnClickListener(v -> {
                Uri session = mFalsingManager.reportRejectedTouch();
                if (session == null) { return; }

                StringWriter message = new StringWriter();
                message.write("Build info: ");
                message.write(SystemProperties.get("ro.build.description"));
                message.write("\nSerial number: ");
                message.write(SystemProperties.get("ro.serialno"));
                message.write("\n");

                PrintWriter falsingPw = new PrintWriter(message);
                FalsingLog.dump(falsingPw);
                falsingPw.flush();

                startActivityDismissingKeyguard(Intent.createChooser(new Intent(Intent.ACTION_SEND)
                                .setType("*/*")
                                .putExtra(Intent.EXTRA_SUBJECT, "Rejected touch report")
                                .putExtra(Intent.EXTRA_STREAM, session)
                                .putExtra(Intent.EXTRA_TEXT, message.toString()),
                        "Share rejected touch report")
                                .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK),
                        true /* onlyProvisioned */, true /* dismissShade */);
            });
        }

        PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
        if (!pm.isScreenOn()) {
            mBroadcastReceiver.onReceive(mContext, new Intent(Intent.ACTION_SCREEN_OFF));
        }
        mGestureWakeLock = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK,
                "GestureWakeLock");
        mVibrator = mContext.getSystemService(Vibrator.class);
        int[] pattern = mContext.getResources().getIntArray(
                R.array.config_cameraLaunchGestureVibePattern);
        mCameraLaunchGestureVibePattern = new long[pattern.length];
        for (int i = 0; i < pattern.length; i++) {
            mCameraLaunchGestureVibePattern[i] = pattern[i];
        }

        // receive broadcasts
        IntentFilter filter = new IntentFilter();
        filter.addAction(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
        filter.addAction(Intent.ACTION_SCREEN_OFF);
        filter.addAction(DevicePolicyManager.ACTION_SHOW_DEVICE_MONITORING_DIALOG);
        context.registerReceiverAsUser(mBroadcastReceiver, UserHandle.ALL, filter, null, null);

        IntentFilter demoFilter = new IntentFilter();
        if (DEBUG_MEDIA_FAKE_ARTWORK) {
            demoFilter.addAction(ACTION_FAKE_ARTWORK);
        }
        demoFilter.addAction(ACTION_DEMO);
        context.registerReceiverAsUser(mDemoReceiver, UserHandle.ALL, demoFilter,
                android.Manifest.permission.DUMP, null);

        // listen for USER_SETUP_COMPLETE setting (per-user)
        mDeviceProvisionedController.addCallback(mUserSetupObserver);
        mUserSetupObserver.onUserSetupChanged();

        // disable profiling bars, since they overlap and clutter the output on app windows
        ThreadedRenderer.overrideProperty("disableProfileBars", "true");

        // Private API call to make the shadows look better for Recents
        ThreadedRenderer.overrideProperty("ambientRatio", String.valueOf(1.5f));
    }

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protected void makeStatusBarView() {

final Context context = mContext;

// 用于重新获取mDisplayMetrics和mCurrentDisplaySize

updateDisplaySize(); // populates mDisplayMetrics

// 重新加载QSPanel、NotificationPanel等的资源，因为可能configuration可能会有变化

updateResources();

updateTheme();

// 用布局R.layout.super_status_bar填充mStatusBarWindow

inflateStatusBarWindow(context);

mStatusBarWindow.setService(this);

mStatusBarWindow.setOnTouchListener(getStatusBarWindowTouchListener());

// mNotificationPanel用于显示各种各种通知的根Panel

// TODO: Deal with the ugliness that comes from having some of the statusbar broken out

// into fragments, but the rest here, it leaves some awkward lifecycle and whatnot.

mNotificationPanel = (NotificationPanelView) mStatusBarWindow.findViewById(

R.id.notification_panel);

// mStackScroller用于显示列表形式的系统通知

mStackScroller = (NotificationStackScrollLayout) mStatusBarWindow.findViewById(

R.id.notification_stack_scroller);

mNotificationPanel.setStatusBar(this);

mNotificationPanel.setGroupManager(mGroupManager);

mAboveShelfObserver = new AboveShelfObserver(mStackScroller);

mAboveShelfObserver.setListener(mStatusBarWindow.findViewById(

R.id.notification_container_parent));

mKeyguardStatusBar = (KeyguardStatusBarView) mStatusBarWindow.findViewById(R.id.keyguard_header);

mNotificationIconAreaController = SystemUIFactory.getInstance()

.createNotificationIconAreaController(context, this);

inflateShelf();

mNotificationIconAreaController.setupShelf(mNotificationShelf);

Dependency.get(DarkIconDispatcher.class).addDarkReceiver(mNotificationIconAreaController);

FragmentHostManager.get(mStatusBarWindow)

.addTagListener(CollapsedStatusBarFragment.TAG, (tag, fragment) -> {

CollapsedStatusBarFragment statusBarFragment =

(CollapsedStatusBarFragment) fragment;

statusBarFragment.initNotificationIconArea(mNotificationIconAreaController);

mStatusBarView = (PhoneStatusBarView) fragment.getView();

mStatusBarView.setBar(this);

mStatusBarView.setPanel(mNotificationPanel);

mStatusBarView.setScrimController(mScrimController);

mStatusBarView.setBouncerShowing(mBouncerShowing);

setAreThereNotifications();

checkBarModes();

}).getFragmentManager()

.beginTransaction()

.replace(R.id.status_bar_container, new CollapsedStatusBarFragment(),

CollapsedStatusBarFragment.TAG)

.commit();

mIconController = Dependency.get(StatusBarIconController.class);

mHeadsUpManager = new HeadsUpManager(context, mStatusBarWindow, mGroupManager);

mHeadsUpManager.setBar(this);

mHeadsUpManager.addListener(this);

mHeadsUpManager.addListener(mNotificationPanel);

mHeadsUpManager.addListener(mGroupManager);

mHeadsUpManager.addListener(mVisualStabilityManager);

mNotificationPanel.setHeadsUpManager(mHeadsUpManager);

mNotificationData.setHeadsUpManager(mHeadsUpManager);

mGroupManager.setHeadsUpManager(mHeadsUpManager);

mHeadsUpManager.setVisualStabilityManager(mVisualStabilityManager);

if (MULTIUSER_DEBUG) {

mNotificationPanelDebugText = (TextView) mNotificationPanel.findViewById(

R.id.header_debug_info);

mNotificationPanelDebugText.setVisibility(View.VISIBLE);

}

try {

boolean showNav = mWindowManagerService.hasNavigationBar();

if (DEBUG) Log.v(TAG, "hasNavigationBar=" + showNav);

if (showNav) {

createNavigationBar();

}

} catch (RemoteException ex) {

// no window manager? good luck with that

}

// figure out which pixel-format to use for the status bar.

mPixelFormat = PixelFormat.OPAQUE;

// 通知列表框

mStackScroller.setLongPressListener(getNotificationLongClicker());

mStackScroller.setStatusBar(this);

mStackScroller.setGroupManager(mGroupManager);

mStackScroller.setHeadsUpManager(mHeadsUpManager);

mGroupManager.setOnGroupChangeListener(mStackScroller);

mVisualStabilityManager.setVisibilityLocationProvider(mStackScroller);

// 没有通知提示框

inflateEmptyShadeView();

// 清除所有通知提示框

inflateDismissView();

mExpandedContents = mStackScroller;

// 包含多媒体插图、图片的View？不知道是干啥用的

mBackdrop = (BackDropView) mStatusBarWindow.findViewById(R.id.backdrop);

mBackdropFront = (ImageView) mBackdrop.findViewById(R.id.backdrop_front);

mBackdropBack = (ImageView) mBackdrop.findViewById(R.id.backdrop_back);

// 字面翻译：锁屏壁纸

if (ENABLE_LOCKSCREEN_WALLPAPER) {

mLockscreenWallpaper = new LockscreenWallpaper(mContext, this, mHandler);

}

mKeyguardIndicationController =

SystemUIFactory.getInstance().createKeyguardIndicationController(mContext,

(ViewGroup) mStatusBarWindow.findViewById(R.id.keyguard_indication_area),

mNotificationPanel.getLockIcon());

mNotificationPanel.setKeyguardIndicationController(mKeyguardIndicationController);

mAmbientIndicationContainer = mStatusBarWindow.findViewById(

R.id.ambient_indication_container);

// set the initial view visibility

setAreThereNotifications();

// TODO: Find better place for this callback.

mBatteryController.addCallback(new BatteryStateChangeCallback() {

@Override

public void onPowerSaveChanged(boolean isPowerSave) {

mHandler.post(mCheckBarModes);

if (mDozeServiceHost != null) {

mDozeServiceHost.firePowerSaveChanged(isPowerSave);

}

@Override

public void onBatteryLevelChanged(int level, boolean pluggedIn, boolean charging) {

// noop

}

});

mLightBarController = Dependency.get(LightBarController.class);

if (mNavigationBar != null) {

mNavigationBar.setLightBarController(mLightBarController);

}

ScrimView scrimBehind = (ScrimView) mStatusBarWindow.findViewById(R.id.scrim_behind);

ScrimView scrimInFront = (ScrimView) mStatusBarWindow.findViewById(R.id.scrim_in_front);

View headsUpScrim = mStatusBarWindow.findViewById(R.id.heads_up_scrim);

mScrimController = SystemUIFactory.getInstance().createScrimController(mLightBarController,

scrimBehind, scrimInFront, headsUpScrim, mLockscreenWallpaper,

scrimsVisible -> {

if (mStatusBarWindowManager != null) {

mStatusBarWindowManager.setScrimsVisible(scrimsVisible);

}

});

if (mScrimSrcModeEnabled) {

Runnable runnable = new Runnable() {

@Override

public void run() {

boolean asSrc = mBackdrop.getVisibility() != View.VISIBLE;

mScrimController.setDrawBehindAsSrc(asSrc);

mStackScroller.setDrawBackgroundAsSrc(asSrc);

}

};

mBackdrop.setOnVisibilityChangedRunnable(runnable);

runnable.run();

}

mHeadsUpManager.addListener(mScrimController);

mStackScroller.setScrimController(mScrimController);

mDozeScrimController = new DozeScrimController(mScrimController, context);

// Other icons

mVolumeComponent = getComponent(VolumeComponent.class);

mNotificationPanel.setUserSetupComplete(mUserSetup);

if (UserManager.get(mContext).isUserSwitcherEnabled()) {

createUserSwitcher();

}

// 配置快速设置小按钮的面板

View container = mStatusBarWindow.findViewById(R.id.qs_frame);

if (container != null) {

FragmentHostManager fragmentHostManager = FragmentHostManager.get(container);

ExtensionFragmentListener.attachExtensonToFragment(container, QS.TAG, R.id.qs_frame,

Dependency.get(ExtensionController.class).newExtension(QS.class)

.withPlugin(QS.class)

.withFeature(

PackageManager.FEATURE_AUTOMOTIVE, () -> new CarQSFragment())

.withDefault(() -> new QSFragment())

.build());

final QSTileHost qsh = SystemUIFactory.getInstance().createQSTileHost(mContext, this,

mIconController);

mBrightnessMirrorController = new BrightnessMirrorController(mStatusBarWindow,

mScrimController);

fragmentHostManager.addTagListener(QS.TAG, (tag, f) -> {

QS qs = (QS) f;

if (qs instanceof QSFragment) {

((QSFragment) qs).setHost(qsh);

mQSPanel = ((QSFragment) qs).getQsPanel();

mQSPanel.setBrightnessMirror(mBrightnessMirrorController);

mKeyguardStatusBar.setQSPanel(mQSPanel);

}

});

}

mReportRejectedTouch = mStatusBarWindow.findViewById(R.id.report_rejected_touch);

if (mReportRejectedTouch != null) {

updateReportRejectedTouchVisibility();

mReportRejectedTouch.setOnClickListener(v -> {

Uri session = mFalsingManager.reportRejectedTouch();

if (session == null) { return; }

StringWriter message = new StringWriter();

message.write("Build info: ");

message.write(SystemProperties.get("ro.build.description"));

message.write("\nSerial number: ");

message.write(SystemProperties.get("ro.serialno"));

message.write("\n");

PrintWriter falsingPw = new PrintWriter(message);

FalsingLog.dump(falsingPw);

falsingPw.flush();

startActivityDismissingKeyguard(Intent.createChooser(new Intent(Intent.ACTION_SEND)

.setType("*/*")

.putExtra(Intent.EXTRA_SUBJECT, "Rejected touch report")

.putExtra(Intent.EXTRA_STREAM, session)

.putExtra(Intent.EXTRA_TEXT, message.toString()),

"Share rejected touch report")

.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK),

true /* onlyProvisioned */, true /* dismissShade */);

});

}

PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);

if (!pm.isScreenOn()) {

mBroadcastReceiver.onReceive(mContext, new Intent(Intent.ACTION_SCREEN_OFF));

}

mGestureWakeLock = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK,

"GestureWakeLock");

mVibrator = mContext.getSystemService(Vibrator.class);

int[] pattern = mContext.getResources().getIntArray(

R.array.config_cameraLaunchGestureVibePattern);

mCameraLaunchGestureVibePattern = new long[pattern.length];

for (int i = 0; i < pattern.length; i++) {

mCameraLaunchGestureVibePattern[i] = pattern[i];

}

// receive broadcasts

IntentFilter filter = new IntentFilter();

filter.addAction(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);

filter.addAction(Intent.ACTION_SCREEN_OFF);

filter.addAction(DevicePolicyManager.ACTION_SHOW_DEVICE_MONITORING_DIALOG);

context.registerReceiverAsUser(mBroadcastReceiver, UserHandle.ALL, filter, null, null);

IntentFilter demoFilter = new IntentFilter();

if (DEBUG_MEDIA_FAKE_ARTWORK) {

demoFilter.addAction(ACTION_FAKE_ARTWORK);

}

demoFilter.addAction(ACTION_DEMO);

context.registerReceiverAsUser(mDemoReceiver, UserHandle.ALL, demoFilter,

android.Manifest.permission.DUMP, null);

// listen for USER_SETUP_COMPLETE setting (per-user)

mDeviceProvisionedController.addCallback(mUserSetupObserver);

mUserSetupObserver.onUserSetupChanged();

// disable profiling bars, since they overlap and clutter the output on app windows

ThreadedRenderer.overrideProperty("disableProfileBars", "true");

// Private API call to make the shadows look better for Recents

ThreadedRenderer.overrideProperty("ambientRatio", String.valueOf(1.5f));

}

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