StatusBar
路径：frameworks/packages/SystemUI/statusbar/phone/statusbar
进来很清晰的可以看到 StatusBar 继承自 SystemUI ，所以我们直接去找对应的 start 方法。
@Override
public void start() {
mGroupManager = Dependency.get(NotificationGroupManager.class);
mGroupAlertTransferHelper = Dependency.get(NotificationGroupAlertTransferHelper.class);
mVisualStabilityManager = Dependency.get(VisualStabilityManager.class);
mNotificationLogger = Dependency.get(NotificationLogger.class);
mRemoteInputManager = Dependency.get(NotificationRemoteInputManager.class);
mNotificationListener = Dependency.get(NotificationListener.class);
mNotificationListener.registerAsSystemService();
mNetworkController = Dependency.get(NetworkController.class);
mUserSwitcherController = Dependency.get(UserSwitcherController.class);
mScreenLifecycle = Dependency.get(ScreenLifecycle.class);
mScreenLifecycle.addObserver(mScreenObserver);
mWakefulnessLifecycle = Dependency.get(WakefulnessLifecycle.class);
mWakefulnessLifecycle.addObserver(mWakefulnessObserver);
mBatteryController = Dependency.get(BatteryController.class);
mAssistManager = Dependency.get(AssistManager.class);
mUiModeManager = mContext.getSystemService(UiModeManager.class);
mLockscreenUserManager = Dependency.get(NotificationLockscreenUserManager.class);
mGutsManager = Dependency.get(NotificationGutsManager.class);
mMediaManager = Dependency.get(NotificationMediaManager.class);
mEntryManager = Dependency.get(NotificationEntryManager.class);
mNotificationInterruptionStateProvider =
Dependency.get(NotificationInterruptionStateProvider.class);
mViewHierarchyManager = Dependency.get(NotificationViewHierarchyManager.class);
mForegroundServiceController = Dependency.get(ForegroundServiceController.class);
mAppOpsController = Dependency.get(AppOpsController.class);
mZenController = Dependency.get(ZenModeController.class);
mKeyguardViewMediator = getComponent(KeyguardViewMediator.class);
mColorExtractor = Dependency.get(SysuiColorExtractor.class);
mDeviceProvisionedController = Dependency.get(DeviceProvisionedController.class);
mNavigationBarController = Dependency.get(NavigationBarController.class);
mBubbleController = Dependency.get(BubbleController.class);
mBubbleController.setExpandListener(mBubbleExpandListener);
mActivityIntentHelper = new ActivityIntentHelper(mContext);
KeyguardSliceProvider sliceProvider = KeyguardSliceProvider.getAttachedInstance();
···
重点查看这个方法 创建状态栏和导航栏的方法
createAndAddWindows(result);
···
}
//createAndAddWindows
public void createAndAddWindows(@Nullable RegisterStatusBarResult result) {
// 继续跟进这个方法
makeStatusBarView(result);
mStatusBarWindowController = Dependency.get(StatusBarWindowController.class);
mStatusBarWindowController.add(mStatusBarWindow, getStatusBarHeight());
}
protected void makeStatusBarView(@Nullable RegisterStatusBarResult result) {
final Context context = mContext;
//获取屏幕参数
updateDisplaySize();
updateResources();
updateTheme();
// 引入StatusBarWindow布局
inflateStatusBarWindow(context);
mStatusBarWindow.setService(this);
// 设置触摸事件监听
mStatusBarWindow.setOnTouchListener(getStatusBarWindowTouchListener());
mNotificationPanel = mStatusBarWindow.findViewById(R.id.notification_panel);
mStackScroller = mStatusBarWindow.findViewById(R.id.notification_stack_scroller);
mZenController.addCallback(this);
NotificationListContainer notifListContainer = (NotificationListContainer) mStackScroller;
mNotificationLogger.setUpWithContainer(notifListContainer);
mNotificationIconAreaController = SystemUIFactory.getInstance()
.createNotificationIconAreaController(context, this, mStatusBarStateController);
inflateShelf();
mNotificationIconAreaController.setupShelf(mNotificationShelf);
Dependency.get(DarkIconDispatcher.class).addDarkReceiver(mNotificationIconAreaController);
// Allow plugins to reference DarkIconDispatcher and StatusBarStateController
Dependency.get(PluginDependencyProvider.class)
.allowPluginDependency(DarkIconDispatcher.class);
Dependency.get(PluginDependencyProvider.class)
.allowPluginDependency(StatusBarStateController.class);
FragmentHostManager.get(mStatusBarWindow)
.addTagListener(CollapsedStatusBarFragment.TAG, (tag, fragment) -> {
CollapsedStatusBarFragment statusBarFragment =
(CollapsedStatusBarFragment) fragment;
statusBarFragment.initNotificationIconArea(mNotificationIconAreaController);
PhoneStatusBarView oldStatusBarView = mStatusBarView;
mStatusBarView = (PhoneStatusBarView) fragment.getView();
mStatusBarView.setBar(this);
mStatusBarView.setPanel(mNotificationPanel);
mStatusBarView.setScrimController(mScrimController);
// CollapsedStatusBarFragment re-inflated PhoneStatusBarView and both of
// mStatusBarView.mExpanded and mStatusBarView.mBouncerShowing are false.
// PhoneStatusBarView is new instance will set to be gone in
// PanelBar.updateVisibility after calling mStatusBarView.setBouncerShowing
// that will trigger PanelBar.updateVisibility. If there is a heads up showing,
// it needs to notify PhoneStatusBarView is new instance to update the correct
// status by calling mNotificationPanel.notifyBarPanelExpansionChanged().
if (mHeadsUpManager.hasPinnedHeadsUp()) {
mNotificationPanel.notifyBarPanelExpansionChanged();
}
mStatusBarView.setBouncerShowing(mBouncerShowing);
if (oldStatusBarView != null) {
float fraction = oldStatusBarView.getExpansionFraction();
boolean expanded = oldStatusBarView.isExpanded();
mStatusBarView.panelExpansionChanged(fraction, expanded);
}
HeadsUpAppearanceController oldController = mHeadsUpAppearanceController;
if (mHeadsUpAppearanceController != null) {
// This view is being recreated, let us destroy the old one
mHeadsUpAppearanceController.destroy();
}
mHeadsUpAppearanceController = new HeadsUpAppearanceController(
mNotificationIconAreaController, mHeadsUpManager, mStatusBarWindow);
mHeadsUpAppearanceController.readFrom(oldController);
mStatusBarWindow.setStatusBarView(mStatusBarView);
updateAreThereNotifications();
checkBarModes();
}).getFragmentManager()
.beginTransaction()
.replace(R.id.status_bar_container, new CollapsedStatusBarFragment(),
CollapsedStatusBarFragment.TAG)
.commit();
mIconController = Dependency.get(StatusBarIconController.class);
// 通知样式
mHeadsUpManager = new HeadsUpManagerPhone(context, mStatusBarWindow, mGroupManager, this,
mVisualStabilityManager);
Dependency.get(ConfigurationController.class).addCallback(mHeadsUpManager);
mHeadsUpManager.addListener(this);
mHeadsUpManager.addListener(mNotificationPanel);
mHeadsUpManager.addListener(mGroupManager);
mHeadsUpManager.addListener(mGroupAlertTransferHelper);
mHeadsUpManager.addListener(mVisualStabilityManager);
mAmbientPulseManager.addListener(this);
mAmbientPulseManager.addListener(mGroupManager);
mAmbientPulseManager.addListener(mGroupAlertTransferHelper);
mNotificationPanel.setHeadsUpManager(mHeadsUpManager);
mGroupManager.setHeadsUpManager(mHeadsUpManager);
mGroupAlertTransferHelper.setHeadsUpManager(mHeadsUpManager);
mNotificationLogger.setHeadsUpManager(mHeadsUpManager);
putComponent(HeadsUpManager.class, mHeadsUpManager);
// 引入导航栏
createNavigationBar(result);
···
}
protected void inflateStatusBarWindow(Context context) {
mStatusBarWindow = (StatusBarWindowView) mInjectionInflater.injectable(
LayoutInflater.from(context)).inflate(R.layout.super_status_bar, null);
}
super_status_bar.XML
<!-- This is the combined status bar / notification panel window. -->
<com.android.systemui.statusbar.phone.StatusBarWindowView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:sysui="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<com.android.systemui.statusbar.BackDropView
android:id="@+id/backdrop"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:visibility="gone"
sysui:ignoreRightInset="true"
>
<ImageView android:id="@+id/backdrop_back"
android:layout_width="match_parent"
android:scaleType="centerCrop"
android:layout_height="match_parent" />
<ImageView android:id="@+id/backdrop_front"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:visibility="invisible" />
</com.android.systemui.statusbar.BackDropView>
<com.android.systemui.statusbar.ScrimView
android:id="@+id/scrim_behind"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:importantForAccessibility="no"
sysui:ignoreRightInset="true"
/>
<FrameLayout
android:id="@+id/status_bar_container"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<include layout="@layout/status_bar_expanded"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:visibility="invisible" />
<include layout="@layout/brightness_mirror" />
<com.android.systemui.statusbar.ScrimView
android:id="@+id/scrim_in_front"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:importantForAccessibility="no"
sysui:ignoreRightInset="true"
/>
<LinearLayout
android:id="@+id/lock_icon_container"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/status_bar_height"
android:layout_gravity="top|center_horizontal">
<com.android.systemui.statusbar.phone.LockIcon
android:id="@+id/lock_icon"
android:layout_width="@dimen/keyguard_lock_width"
android:layout_height="@dimen/keyguard_lock_height"
android:layout_gravity="center_horizontal"
android:layout_marginTop="@dimen/keyguard_lock_padding"
android:contentDescription="@string/accessibility_unlock_button"
android:src="@*android:drawable/ic_lock"
android:scaleType="center" />
<com.android.keyguard.KeyguardMessageArea
android:id="@+id/keyguard_message_area"
style="@style/Keyguard.TextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/keyguard_lock_padding"
android:gravity="center"
android:singleLine="true"
android:ellipsize="marquee"
android:focusable="true" />
</LinearLayout>
</com.android.systemui.statusbar.phone.StatusBarWindowView>
// TODO(b/117478341): This was left such that CarStatusBar can override this method.
// Try to remove this.
protected void createNavigationBar(@Nullable RegisterStatusBarResult result) {
mNavigationBarController.createNavigationBars(true /* includeDefaultDisplay */, result);
}
NavigationBarController 创建导航栏
/**
* Creates navigation bars when car/status bar initializes.
*
* @param includeDefaultDisplay {@code true} to create navigation bar on default display.
*/
public void createNavigationBars(final boolean includeDefaultDisplay,
RegisterStatusBarResult result) {
Display[] displays = mDisplayManager.getDisplays();
for (Display display : displays) {
if (includeDefaultDisplay || display.getDisplayId() != DEFAULT_DISPLAY) {
createNavigationBar(display, result);
}
}
}
/**
* Adds a navigation bar on default display or an external display if the display supports
* system decorations.
*
* @param display the display to add navigation bar on.
*/
@VisibleForTesting
void createNavigationBar(Display display, RegisterStatusBarResult result) {
if (display == null) {
return;
}
final int displayId = display.getDisplayId();
final boolean isOnDefaultDisplay = displayId == DEFAULT_DISPLAY;
final IWindowManager wms = WindowManagerGlobal.getWindowManagerService();
try {
if (!wms.hasNavigationBar(displayId)) {
return;
}
} catch (RemoteException e) {
// Cannot get wms, just return with warning message.
Log.w(TAG, "Cannot get WindowManager.");
return;
}
final Context context = isOnDefaultDisplay
? mContext
: mContext.createDisplayContext(display);
NavigationBarFragment.create(context, (tag, fragment) -> {
NavigationBarFragment navBar = (NavigationBarFragment) fragment;
// Unfortunately, we still need it because status bar needs LightBarController
// before notifications creation. We cannot directly use getLightBarController()
// from NavigationBarFragment directly.
LightBarController lightBarController = isOnDefaultDisplay
? Dependency.get(LightBarController.class)
: new LightBarController(context,
Dependency.get(DarkIconDispatcher.class),
Dependency.get(BatteryController.class));
navBar.setLightBarController(lightBarController);
// TODO(b/118592525): to support multi-display, we start to add something which is
// per-display, while others may be global. I think it's time to add
// a new class maybe named DisplayDependency to solve per-display
// Dependency problem.
AutoHideController autoHideController = isOnDefaultDisplay
? Dependency.get(AutoHideController.class)
: new AutoHideController(context, mHandler);
navBar.setAutoHideController(autoHideController);
navBar.restoreSystemUiVisibilityState();
mNavigationBars.append(displayId, navBar);
if (result != null) {
navBar.setImeWindowStatus(display.getDisplayId(), result.mImeToken,
result.mImeWindowVis, result.mImeBackDisposition,
result.mShowImeSwitcher);
}
});
}
这样StatusBar就创建完毕了
如有错误欢迎指出 共同学习 共同进步哈~
