SystemUI 是如何启动的
systemui包括了系统栏和导航栏，也就是我们看到的电量、时间栏和返回按键这类的导航栏。systemui也是一个apk，所以我们就会想他是如何启动的呢，
android 系统的启动肯定是首先 systemserver, systemserver会启动android 系统所需的各种服务，比如activtymanagerservice，当mActivityManagerService的systemReady回调后就会执行 启动systemui的动作。
ActivityManagerService 的systemReady
public void systemReady(final Runnable goingCallback) {
synchronized(this) {
if (mSystemReady) {
// If we're done calling all the receivers, run the next "boot phase" passed in
// by the SystemServer
if (goingCallback != null) {
goingCallback.run();
}
return;
}
mLocalDeviceIdleController
= LocalServices.getService(DeviceIdleController.LocalService.class);
// Make sure we have the current profile info, since it is needed for
// security checks.
updateCurrentProfileIdsLocked();
mRecentTasks.clear();
mRecentTasks.addAll(mTaskPersister.restoreTasksLocked());
mRecentTasks.cleanupLocked(UserHandle.USER_ALL);
mTaskPersister.startPersisting();
// Check to see if there are any update receivers to run.
if (!mDidUpdate) {
if (mWaitingUpdate) {
return;
}
final ArrayList<ComponentName> doneReceivers = new ArrayList<ComponentName>();
mWaitingUpdate = deliverPreBootCompleted(new Runnable() {
public void run() {
synchronized (ActivityManagerService.this) {
mDidUpdate = true;
}
showBootMessage(mContext.getText(
R.string.android_upgrading_complete),
false);
writeLastDonePreBootReceivers(doneReceivers);
systemReady(goingCallback); //这里调到了调到了 SystemServer 里面设置的回调。启动systemui
}
}, doneReceivers, UserHandle.USER_OWNER);
if (mWaitingUpdate) {
return;
}
mDidUpdate = true;
}
mAppOpsService.systemReady();
mSystemReady = true;
}
ArrayList<ProcessRecord> procsToKill = null;
synchronized(mPidsSelfLocked) {
for (int i=mPidsSelfLocked.size()-1; i>=0; i--) {
ProcessRecord proc = mPidsSelfLocked.valueAt(i);
if (!isAllowedWhileBooting(proc.info)){
if (procsToKill == null) {
procsToKill = new ArrayList<ProcessRecord>();
}
procsToKill.add(proc);
}
}
}
synchronized(this) {
if (procsToKill != null) {
for (int i=procsToKill.size()-1; i>=0; i--) {
ProcessRecord proc = procsToKill.get(i);
Slog.i(TAG, "Removing system update proc: " + proc);
removeProcessLocked(proc, true, false, "system update done");
}
}
// Now that we have cleaned up any update processes, we
// are ready to start launching real processes and know that
// we won't trample on them any more.
mProcessesReady = true;
}
Slog.i(TAG, "System now ready");
EventLog.writeEvent(EventLogTags.BOOT_PROGRESS_AMS_READY,
SystemClock.uptimeMillis());
synchronized(this) {
// Make sure we have no pre-ready processes sitting around.
if (mFactoryTest == FactoryTest.FACTORY_TEST_LOW_LEVEL) {
ResolveInfo ri = mContext.getPackageManager()
.resolveActivity(new Intent(Intent.ACTION_FACTORY_TEST),
STOCK_PM_FLAGS);
CharSequence errorMsg = null;
if (ri != null) {
ActivityInfo ai = ri.activityInfo;
ApplicationInfo app = ai.applicationInfo;
if ((app.flags&ApplicationInfo.FLAG_SYSTEM) != 0) {
mTopAction = Intent.ACTION_FACTORY_TEST;
mTopData = null;
mTopComponent = new ComponentName(app.packageName,
ai.name);
} else {
errorMsg = mContext.getResources().getText(
com.android.internal.R.string.factorytest_not_system);
}
} else {
errorMsg = mContext.getResources().getText(
com.android.internal.R.string.factorytest_no_action);
}
if (errorMsg != null) {
mTopAction = null;
mTopData = null;
mTopComponent = null;
Message msg = Message.obtain();
msg.what = SHOW_FACTORY_ERROR_MSG;
msg.getData().putCharSequence("msg", errorMsg);
mUiHandler.sendMessage(msg);
}
}
}
retrieveSettings();
loadResourcesOnSystemReady();
synchronized (this) {
readGrantedUriPermissionsLocked();
}
if (goingCallback != null) goingCallback.run();
mBatteryStatsService.noteEvent(BatteryStats.HistoryItem.EVENT_USER_RUNNING_START,
Integer.toString(mCurrentUserId), mCurrentUserId);
mBatteryStatsService.noteEvent(BatteryStats.HistoryItem.EVENT_USER_FOREGROUND_START,
Integer.toString(mCurrentUserId), mCurrentUserId);
mSystemServiceManager.startUser(mCurrentUserId);
synchronized (this) {
if (mFactoryTest != FactoryTest.FACTORY_TEST_LOW_LEVEL) {
try {
List apps = AppGlobals.getPackageManager().
getPersistentApplications(STOCK_PM_FLAGS);
if (apps != null) {
int N = apps.size();
int i;
for (i=0; i<N; i++) {
ApplicationInfo info
= (ApplicationInfo)apps.get(i);
if (info != null &&
!info.packageName.equals("android")) {
addAppLocked(info, false, null /* ABI override */);
}
}
}
} catch (RemoteException ex) {
// pm is in same process, this will never happen.
}
}
// Start up initial activity.
mBooting = true;
startHomeActivityLocked(mCurrentUserId, "systemReady"); //这里启动launcher 应用，所以 systemui 是在launcher之前启动
try {
if (AppGlobals.getPackageManager().hasSystemUidErrors()) {
Slog.e(TAG, "UIDs on the system are inconsistent, you need to wipe your"
+ " data partition or your device will be unstable.");
mUiHandler.obtainMessage(SHOW_UID_ERROR_MSG).sendToTarget();
}
} catch (RemoteException e) {
}
if (!Build.isBuildConsistent()) {
Slog.e(TAG, "Build fingerprint is not consistent, warning user");
mUiHandler.obtainMessage(SHOW_FINGERPRINT_ERROR_MSG).sendToTarget();
}
long ident = Binder.clearCallingIdentity();
try {
Intent intent = new Intent(Intent.ACTION_USER_STARTED);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY
| Intent.FLAG_RECEIVER_FOREGROUND);
intent.putExtra(Intent.EXTRA_USER_HANDLE, mCurrentUserId);
broadcastIntentLocked(null, null, intent,
null, null, 0, null, null, null, AppOpsManager.OP_NONE,
null, false, false, MY_PID, Process.SYSTEM_UID, mCurrentUserId);
intent = new Intent(Intent.ACTION_USER_STARTING);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
intent.putExtra(Intent.EXTRA_USER_HANDLE, mCurrentUserId);
broadcastIntentLocked(null, null, intent,
null, new IIntentReceiver.Stub() {
@Override
public void performReceive(Intent intent, int resultCode, String data,
Bundle extras, boolean ordered, boolean sticky, int sendingUser)
throws RemoteException {
}
}, 0, null, null,
new String[] {INTERACT_ACROSS_USERS}, AppOpsManager.OP_NONE,
null, true, false, MY_PID, Process.SYSTEM_UID, UserHandle.USER_ALL);
} catch (Throwable t) {
Slog.wtf(TAG, "Failed sending first user broadcasts", t);
} finally {
Binder.restoreCallingIdentity(ident);
}
mStackSupervisor.resumeTopActivitiesLocked();
sendUserSwitchBroadcastsLocked(-1, mCurrentUserId);
}
}
SystemServer 当中
// These are needed to propagate to the runnable below.
final NetworkManagementService networkManagementF = networkManagement;
final NetworkStatsService networkStatsF = networkStats;
final NetworkPolicyManagerService networkPolicyF = networkPolicy;
final ConnectivityService connectivityF = connectivity;
final NetworkScoreService networkScoreF = networkScore;
final WallpaperManagerService wallpaperF = wallpaper;
final InputMethodManagerService immF = imm;
final LocationManagerService locationF = location;
final CountryDetectorService countryDetectorF = countryDetector;
final NetworkTimeUpdateService networkTimeUpdaterF = networkTimeUpdater;
final CommonTimeManagementService commonTimeMgmtServiceF = commonTimeMgmtService;
final TextServicesManagerService textServiceManagerServiceF = tsms;
final StatusBarManagerService statusBarF = statusBar;
final AssetAtlasService atlasF = atlas;
final InputManagerService inputManagerF = inputManager;
final TelephonyRegistry telephonyRegistryF = telephonyRegistry;
final MediaRouterService mediaRouterF = mediaRouter;
final AudioService audioServiceF = audioService;
final MmsServiceBroker mmsServiceF = mmsService;
// We now tell the activity manager it is okay to run third party
// code. It will call back into us once it has gotten to the state
// where third party code can really run (but before it has actually
// started launching the initial applications), for us to complete our
// initialization.
mActivityManagerService.systemReady(new Runnable() {
@Override
public void run() {
Slog.i(TAG, "Making services ready");
mSystemServiceManager.startBootPhase(
SystemService.PHASE_ACTIVITY_MANAGER_READY);
try {
mActivityManagerService.startObservingNativeCrashes();
} catch (Throwable e) {
reportWtf("observing native crashes", e);
}
Slog.i(TAG, "WebViewFactory preparation");
WebViewFactory.prepareWebViewInSystemServer();
try {
startSystemUi(context); //启动SystemUi
} catch (Throwable e) {
reportWtf("starting System UI", e);
}
try {
if (networkScoreF != null) networkScoreF.systemReady();
} catch (Throwable e) {
reportWtf("making Network Score Service ready", e);
}
try {
if (networkManagementF != null) networkManagementF.systemReady();
} catch (Throwable e) {
reportWtf("making Network Managment Service ready", e);
}
try {
if (networkStatsF != null) networkStatsF.systemReady();
} catch (Throwable e) {
reportWtf("making Network Stats Service ready", e);
}
try {
if (networkPolicyF != null) networkPolicyF.systemReady();
} catch (Throwable e) {
reportWtf("making Network Policy Service ready", e);
}
try {
if (connectivityF != null) connectivityF.systemReady();
} catch (Throwable e) {
reportWtf("making Connectivity Service ready", e);
}
try {
if (audioServiceF != null) audioServiceF.systemReady();
} catch (Throwable e) {
reportWtf("Notifying AudioService running", e);
}
Watchdog.getInstance().start();
// It is now okay to let the various system services start their
// third party code...
mSystemServiceManager.startBootPhase(
SystemService.PHASE_THIRD_PARTY_APPS_CAN_START);
try {
if (wallpaperF != null) wallpaperF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying WallpaperService running", e);
}
try {
if (immF != null) immF.systemRunning(statusBarF);
} catch (Throwable e) {
reportWtf("Notifying InputMethodService running", e);
}
try {
if (locationF != null) locationF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying Location Service running", e);
}
try {
if (countryDetectorF != null) countryDetectorF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying CountryDetectorService running", e);
}
try {
if (networkTimeUpdaterF != null) networkTimeUpdaterF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying NetworkTimeService running", e);
}
try {
if (commonTimeMgmtServiceF != null) {
commonTimeMgmtServiceF.systemRunning();
}
} catch (Throwable e) {
reportWtf("Notifying CommonTimeManagementService running", e);
}
try {
if (textServiceManagerServiceF != null)
textServiceManagerServiceF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying TextServicesManagerService running", e);
}
try {
if (atlasF != null) atlasF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying AssetAtlasService running", e);
}
try {
// TODO(BT) Pass parameter to input manager
if (inputManagerF != null) inputManagerF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying InputManagerService running", e);
}
try {
if (telephonyRegistryF != null) telephonyRegistryF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying TelephonyRegistry running", e);
}
try {
if (mediaRouterF != null) mediaRouterF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying MediaRouterService running", e);
}
try {
if (mmsServiceF != null) mmsServiceF.systemRunning();
} catch (Throwable e) {
reportWtf("Notifying MmsService running", e);
}
}
});
}
//启动了 systemui package里面的SystemUIService
static final void startSystemUi(Context context) {
Intent intent = new Intent();
intent.setComponent(new ComponentName("com.android.systemui",
"com.android.systemui.SystemUIService"));
//Slog.d(TAG, "Starting service: " + intent);
context.startServiceAsUser(intent, UserHandle.OWNER);
}```
### systemui 中运行了哪些服务？
直接看看 systemuiservice里面代码
package com.android.systemui;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import java.io.FileDescriptor;
import java.io.PrintWriter;
public class SystemUIService extends Service {
@Override
public void onCreate() {
super.onCreate();
((SystemUIApplication) getApplication()).startServicesIfNeeded(); // 只是做了这件事情
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
SystemUI[] services = ((SystemUIApplication) getApplication()).getServices();
if (args == null || args.length == 0) {
for (SystemUI ui: services) {
pw.println("dumping service: " + ui.getClass().getName());
ui.dump(fd, pw, args);
}
} else {
String svc = args[0];
for (SystemUI ui: services) {
String name = ui.getClass().getName();
if (name.endsWith(svc)) {
ui.dump(fd, pw, args);
}
}
}
}
}
走到了 SystemUIApplication 里面
private final Class<?>[] SERVICES = new Class[] {
com.android.systemui.tuner.TunerService.class,
com.android.systemui.keyguard.KeyguardViewMediator.class,
com.android.systemui.recents.Recents.class,
com.android.systemui.volume.VolumeUI.class,
com.android.systemui.statusbar.SystemBars.class,
com.android.systemui.usb.StorageNotification.class,
com.android.systemui.power.PowerUI.class,
com.android.systemui.media.RingtonePlayer.class,
};
public void startServicesIfNeeded() {
if (mServicesStarted) {
return;
}
if (!mBootCompleted) {
// check to see if maybe it was already completed long before we began
// see ActivityManagerService.finishBooting()
if ("1".equals(SystemProperties.get("sys.boot_completed"))) {
mBootCompleted = true;
if (DEBUG) Log.v(TAG, "BOOT_COMPLETED was already sent");
}
}
Log.v(TAG, "Starting SystemUI services.");
final int N = SERVICES.length;
for (int i=0; i<N; i++) {
Class<?> cl = SERVICES[i];
if (DEBUG) Log.d(TAG, "loading: " + cl);
try {
mServices[i] = (SystemUI)cl.newInstance();
} catch (IllegalAccessException ex) {
throw new RuntimeException(ex);
} catch (InstantiationException ex) {
throw new RuntimeException(ex);
}
mServices[i].mContext = this;
mServices[i].mComponents = mComponents;
if (DEBUG) Log.d(TAG, "running: " + mServices[i]);
mServices[i].start();
if (mBootCompleted) {
mServices[i].onBootCompleted();
}
}
mServicesStarted = true;
}
以上看以看出分别启动了 com.android.systemui.tuner.TunerService.class,
com.android.systemui.keyguard.KeyguardViewMediator.class,
com.android.systemui.recents.Recents.class,
com.android.systemui.volume.VolumeUI.class,
com.android.systemui.statusbar.SystemBars.class,
com.android.systemui.usb.StorageNotification.class,
com.android.systemui.power.PowerUI.class,
com.android.systemui.media.RingtonePlayer.class,
这些子服务，它自己启动没有干什么事情。
### systemui的那些ui布局是在哪里被显示出来的 ？
带着这个问题 看看com.android.systemui.statusbar.SystemBars.class 这个的实现，
SystemBars.java 中启动
public void start() {
if (DEBUG) Log.d(TAG, "start");
mServiceMonitor = new ServiceMonitor(TAG, DEBUG,
mContext, Settings.Secure.BAR_SERVICE_COMPONENT, this);
mServiceMonitor.start(); // will call onNoService if no remote service is found
}
再继续跟进ServiceMonitor.java 的start
public void start() {
// listen for setting changes
ContentResolver cr = mContext.getContentResolver();
cr.registerContentObserver(Settings.Secure.getUriFor(mSettingKey),
false /notifyForDescendents/, mSettingObserver, UserHandle.USER_ALL);
// listen for package/component changes
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_PACKAGE_ADDED);
filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
filter.addDataScheme("package");
mContext.registerReceiver(mBroadcastReceiver, filter)
mHandler.sendEmptyMessage(MSG_START_SERVICE);
}
上面注册了一个setting数据库的监听器和package change的广播，然而这个不是我们现在关心的，看到最后 mHandler有发送一个消息出去MSG_START_SERVICE。又启动了一个服务？继续看吧
private final Handler mHandler = new Handler() {
public void handleMessage(Message msg) {
switch(msg.what) {
case MSG_START_SERVICE:
startService();
break;
case MSG_CONTINUE_START_SERVICE:
continueStartService();
break;
case MSG_STOP_SERVICE:
stopService();
break;
case MSG_PACKAGE_INTENT:
packageIntent((Intent)msg.obj);
break;
case MSG_CHECK_BOUND:
checkBound();
break;
case MSG_SERVICE_DISCONNECTED:
serviceDisconnected((ComponentName)msg.obj);
break;
}
}
};
private void startService() {
mServiceName = getComponentNameFromSetting();
if (mDebug) Log.d(mTag, "startService mServiceName=" + mServiceName);
if (mServiceName == null) {
mBound = false; //走到了这个分支
mCallbacks.onNoService();
} else {
long delay = mCallbacks.onServiceStartAttempt();
mHandler.sendEmptyMessageDelayed(MSG_CONTINUE_START_SERVICE, delay);
}
}
public interface Callbacks {
/** The service does not exist or failed to bind /
void onNoService();
/* The service is about to start, this is a chance to perform cleanup and
* delay the start if necessary */
long onServiceStartAttempt();
}
可见 Callbacks 这个回调是在实现的地方来执行的，实现了它的地方在SystemBars.java
@Override
public void onNoService() {
if (DEBUG) Log.d(TAG, "onNoService");
//这里开始创建statusbar了
createStatusBarFromConfig(); // fallback to using an in-process implementation
}
@Override
public long onServiceStartAttempt() {
if (DEBUG) Log.d(TAG, "onServiceStartAttempt mStatusBar="+mStatusBar);
if (mStatusBar != null) {
// tear down the in-process version, we'll recreate it again if needed
mStatusBar.destroy();
mStatusBar = null;
return WAIT_FOR_BARS_TO_DIE;
}
return 0;
}
// in-process fallback implementation, per the product config
private BaseStatusBar mStatusBar;
private void createStatusBarFromConfig() {
if (DEBUG) Log.d(TAG, "createStatusBarFromConfig");
final String clsName = mContext.getString(R.string.config_statusBarComponent);
if (clsName == null || clsName.length() == 0) {
throw andLog("No status bar component configured", null);
}
Class<?> cls = null;
try {
cls = mContext.getClassLoader().loadClass(clsName);
} catch (Throwable t) {
throw andLog("Error loading status bar component: " + clsName, t);
}
try {
mStatusBar = (BaseStatusBar) cls.newInstance();
} catch (Throwable t) {
throw andLog("Error creating status bar component: " + clsName, t);
}
mStatusBar.mContext = mContext;
mStatusBar.mComponents = mComponents;
mStatusBar.start();
if (DEBUG) Log.d(TAG, "started " + mStatusBar.getClass().getSimpleName());
}
下面就要正在把view相关的内容添加进来了BaseStatusBar 的start()
public void start() {
mWindowManager = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE);
mWindowManagerService = WindowManagerGlobal.getWindowManagerService();
mDisplay = mWindowManager.getDefaultDisplay();
mDevicePolicyManager = (DevicePolicyManager)mContext.getSystemService(
Context.DEVICE_POLICY_SERVICE);
mNotificationColorUtil = NotificationColorUtil.getInstance(mContext);
mNotificationData = new NotificationData(this);
mAccessibilityManager = (AccessibilityManager)
mContext.getSystemService(Context.ACCESSIBILITY_SERVICE);
mDreamManager = IDreamManager.Stub.asInterface(
ServiceManager.checkService(DreamService.DREAM_SERVICE));
mPowerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
mContext.getContentResolver().registerContentObserver(
Settings.Global.getUriFor(Settings.Global.DEVICE_PROVISIONED), true,
mSettingsObserver);
mContext.getContentResolver().registerContentObserver(
Settings.Global.getUriFor(Settings.Global.ZEN_MODE), false,
mSettingsObserver);
mContext.getContentResolver().registerContentObserver(
Settings.Secure.getUriFor(Settings.Secure.LOCK_SCREEN_SHOW_NOTIFICATIONS), false,
mSettingsObserver,
UserHandle.USER_ALL);
mContext.getContentResolver().registerContentObserver(
Settings.Secure.getUriFor(Settings.Secure.LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS),
true,
mLockscreenSettingsObserver,
UserHandle.USER_ALL);
mBarService = IStatusBarService.Stub.asInterface(
ServiceManager.getService(Context.STATUS_BAR_SERVICE));
mRecents = getComponent(Recents.class);
mRecents.setCallback(this);
final Configuration currentConfig = mContext.getResources().getConfiguration();
mLocale = currentConfig.locale;
mLayoutDirection = TextUtils.getLayoutDirectionFromLocale(mLocale);
mFontScale = currentConfig.fontScale;
mUserManager = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
mLinearOutSlowIn = AnimationUtils.loadInterpolator(mContext,
android.R.interpolator.linear_out_slow_in);
mFastOutLinearIn = AnimationUtils.loadInterpolator(mContext,
android.R.interpolator.fast_out_linear_in);
// Connect in to the status bar manager service
StatusBarIconList iconList = new StatusBarIconList();
mCommandQueue = new CommandQueue(this, iconList);
int[] switches = new int[8];
ArrayList<IBinder> binders = new ArrayList<IBinder>();
try {
mBarService.registerStatusBar(mCommandQueue, iconList, switches, binders);
} catch (RemoteException ex) {
// If the system process isn't there we're doomed anyway.
}
createAndAddWindows();//创建view
mSettingsObserver.onChange(false); // set up
disable(switches[0], switches[6], false /* animate */);
setSystemUiVisibility(switches[1], 0xffffffff);
topAppWindowChanged(switches[2] != 0);
// StatusBarManagerService has a back up of IME token and it's restored here.
setImeWindowStatus(binders.get(0), switches[3], switches[4], switches[5] != 0);
// Set up the initial icon state
int N = iconList.size();
int viewIndex = 0;
for (int i=0; i<N; i++) {
StatusBarIcon icon = iconList.getIcon(i);
if (icon != null) {
addIcon(iconList.getSlot(i), i, viewIndex, icon);
viewIndex++;
}
}
// Set up the initial notification state.
try {
mNotificationListener.registerAsSystemService(mContext,
new ComponentName(mContext.getPackageName(), getClass().getCanonicalName()),
UserHandle.USER_ALL);
} catch (RemoteException e) {
Log.e(TAG, "Unable to register notification listener", e);
}
if (DEBUG) {
Log.d(TAG, String.format(
"init: icons=%d disabled=0x%08x lights=0x%08x menu=0x%08x imeButton=0x%08x",
iconList.size(),
switches[0],
switches[1],
switches[2],
switches[3]
));
}
mCurrentUserId = ActivityManager.getCurrentUser();
setHeadsUpUser(mCurrentUserId);
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_USER_SWITCHED);
filter.addAction(Intent.ACTION_USER_ADDED);
filter.addAction(Intent.ACTION_USER_PRESENT);
filter.addAction(BANNER_ACTION_CANCEL);
filter.addAction(BANNER_ACTION_SETUP);
mContext.registerReceiver(mBroadcastReceiver, filter);
IntentFilter allUsersFilter = new IntentFilter();
allUsersFilter.addAction(
DevicePolicyManager.ACTION_DEVICE_POLICY_MANAGER_STATE_CHANGED);
mContext.registerReceiverAsUser(mAllUsersReceiver, UserHandle.ALL, allUsersFilter,
null, null);
updateCurrentProfilesCache();
}
可以从源码中看到 protected abstract void createAndAddWindows(); 是一个抽象方法，所以这个应该是由它的子类来进行实现的，PhoneStatusBar.java 中找到了它的实现。
@Override
public void createAndAddWindows() {
addStatusBarWindow();
}
private void addStatusBarWindow() {
makeStatusBarView();// 加载view
mStatusBarWindowManager = new StatusBarWindowManager(mContext);
mStatusBarWindowManager.add(mStatusBarWindow, getStatusBarHeight());
}
// ================================================================================
// Constructing the view
// ================================================================================
protected PhoneStatusBarView makeStatusBarView() {
final Context context = mContext;
Resources res = context.getResources();
updateDisplaySize(); // populates mDisplayMetrics
updateResources();
mStatusBarWindow = (StatusBarWindowView) View.inflate(context,
R.layout.super_status_bar, null); // view的布局文件
mStatusBarWindow.setService(this);
mStatusBarWindow.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
checkUserAutohide(v, event);
if (event.getAction() == MotionEvent.ACTION_DOWN) {
if (mExpandedVisible) {
animateCollapsePanels();
}
}
return mStatusBarWindow.onTouchEvent(event);
}
});
mStatusBarView = (PhoneStatusBarView) mStatusBarWindow.findViewById(R.id.status_bar);
mStatusBarView.setBar(this);
PanelHolder holder = (PanelHolder) mStatusBarWindow.findViewById(R.id.panel_holder);
mStatusBarView.setPanelHolder(holder);
mNotificationPanel = (NotificationPanelView) mStatusBarWindow.findViewById(
R.id.notification_panel);
mNotificationPanel.setStatusBar(this);
if (!ActivityManager.isHighEndGfx()) {
mStatusBarWindow.setBackground(null);
mNotificationPanel.setBackground(new FastColorDrawable(context.getColor(
R.color.notification_panel_solid_background)));
}
mHeadsUpManager = new HeadsUpManager(context, mStatusBarWindow);
mHeadsUpManager.setBar(this);
mHeadsUpManager.addListener(this);
mHeadsUpManager.addListener(mNotificationPanel);
mNotificationPanel.setHeadsUpManager(mHeadsUpManager);
mNotificationData.setHeadsUpManager(mHeadsUpManager);
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) {
mNavigationBarView =
(NavigationBarView) View.inflate(context, R.layout.navigation_bar, null);
mNavigationBarView.setDisabledFlags(mDisabled1);
mNavigationBarView.setBar(this);
mNavigationBarView.setOnVerticalChangedListener(
new NavigationBarView.OnVerticalChangedListener() {
@Override
public void onVerticalChanged(boolean isVertical) {
if (mAssistManager != null) {
mAssistManager.onConfigurationChanged();
}
mNotificationPanel.setQsScrimEnabled(!isVertical);
}
});
mNavigationBarView.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
checkUserAutohide(v, event);
return false;
}});
}
} catch (RemoteException ex) {
// no window manager? good luck with that
}
mAssistManager = new AssistManager(this, context);
// figure out which pixel-format to use for the status bar.
mPixelFormat = PixelFormat.OPAQUE;
mStackScroller = (NotificationStackScrollLayout) mStatusBarWindow.findViewById(
R.id.notification_stack_scroller);
mStackScroller.setLongPressListener(getNotificationLongClicker());
mStackScroller.setPhoneStatusBar(this);
mStackScroller.setGroupManager(mGroupManager);
mStackScroller.setHeadsUpManager(mHeadsUpManager);
mGroupManager.setOnGroupChangeListener(mStackScroller);
mKeyguardIconOverflowContainer =
(NotificationOverflowContainer) LayoutInflater.from(mContext).inflate(
R.layout.status_bar_notification_keyguard_overflow, mStackScroller, false);
mKeyguardIconOverflowContainer.setOnActivatedListener(this);
mKeyguardIconOverflowContainer.setOnClickListener(mOverflowClickListener);
mStackScroller.setOverflowContainer(mKeyguardIconOverflowContainer);
SpeedBumpView speedBump = (SpeedBumpView) LayoutInflater.from(mContext).inflate(
R.layout.status_bar_notification_speed_bump, mStackScroller, false);
mStackScroller.setSpeedBumpView(speedBump);
mEmptyShadeView = (EmptyShadeView) LayoutInflater.from(mContext).inflate(
R.layout.status_bar_no_notifications, mStackScroller, false);
mStackScroller.setEmptyShadeView(mEmptyShadeView);
mDismissView = (DismissView) LayoutInflater.from(mContext).inflate(
R.layout.status_bar_notification_dismiss_all, mStackScroller, false);
mDismissView.setOnButtonClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
MetricsLogger.action(mContext, MetricsLogger.ACTION_DISMISS_ALL_NOTES);
clearAllNotifications();
}
});
mStackScroller.setDismissView(mDismissView);
mExpandedContents = mStackScroller;
mBackdrop = (BackDropView) mStatusBarWindow.findViewById(R.id.backdrop);
mBackdropFront = (ImageView) mBackdrop.findViewById(R.id.backdrop_front);
mBackdropBack = (ImageView) mBackdrop.findViewById(R.id.backdrop_back);
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 = new ScrimController(scrimBehind, scrimInFront, headsUpScrim,
mScrimSrcModeEnabled);
mHeadsUpManager.addListener(mScrimController);
mStackScroller.setScrimController(mScrimController);
mScrimController.setBackDropView(mBackdrop);
mStatusBarView.setScrimController(mScrimController);
mDozeScrimController = new DozeScrimController(mScrimController, context);
mHeader = (StatusBarHeaderView) mStatusBarWindow.findViewById(R.id.header);
mHeader.setActivityStarter(this);
mKeyguardStatusBar = (KeyguardStatusBarView) mStatusBarWindow.findViewById(R.id.keyguard_header);
mKeyguardStatusView = mStatusBarWindow.findViewById(R.id.keyguard_status_view);
mKeyguardBottomArea =
(KeyguardBottomAreaView) mStatusBarWindow.findViewById(R.id.keyguard_bottom_area);
mKeyguardBottomArea.setActivityStarter(this);
mKeyguardBottomArea.setAssistManager(mAssistManager);
mKeyguardIndicationController = new KeyguardIndicationController(mContext,
(KeyguardIndicationTextView) mStatusBarWindow.findViewById(
R.id.keyguard_indication_text));
mKeyguardBottomArea.setKeyguardIndicationController(mKeyguardIndicationController);
// set the inital view visibility
setAreThereNotifications();
mIconController = new StatusBarIconController(
mContext, mStatusBarView, mKeyguardStatusBar, this);
// Background thread for any controllers that need it.
mHandlerThread = new HandlerThread(TAG, Process.THREAD_PRIORITY_BACKGROUND);
mHandlerThread.start();
// Other icons
mLocationController = new LocationControllerImpl(mContext,
mHandlerThread.getLooper()); // will post a notification
mBatteryController = new BatteryController(mContext);
mBatteryController.addStateChangedCallback(new BatteryStateChangeCallback() {
@Override
public void onPowerSaveChanged() {
mHandler.post(mCheckBarModes);
if (mDozeServiceHost != null) {
mDozeServiceHost.firePowerSaveChanged(mBatteryController.isPowerSave());
}
}
@Override
public void onBatteryLevelChanged(int level, boolean pluggedIn, boolean charging) {
// noop
}
});
mNetworkController = new NetworkControllerImpl(mContext, mHandlerThread.getLooper());
mHotspotController = new HotspotControllerImpl(mContext);
mBluetoothController = new BluetoothControllerImpl(mContext, mHandlerThread.getLooper());
mSecurityController = new SecurityControllerImpl(mContext);
if (mContext.getResources().getBoolean(R.bool.config_showRotationLock)) {
mRotationLockController = new RotationLockControllerImpl(mContext);
}
mUserInfoController = new UserInfoController(mContext);
mVolumeComponent = getComponent(VolumeComponent.class);
if (mVolumeComponent != null) {
mZenModeController = mVolumeComponent.getZenController();
}
mCastController = new CastControllerImpl(mContext);
final SignalClusterView signalCluster =
(SignalClusterView) mStatusBarView.findViewById(R.id.signal_cluster);
final SignalClusterView signalClusterKeyguard =
(SignalClusterView) mKeyguardStatusBar.findViewById(R.id.signal_cluster);
final SignalClusterView signalClusterQs =
(SignalClusterView) mHeader.findViewById(R.id.signal_cluster);
mNetworkController.addSignalCallback(signalCluster);
mNetworkController.addSignalCallback(signalClusterKeyguard);
mNetworkController.addSignalCallback(signalClusterQs);
signalCluster.setSecurityController(mSecurityController);
signalCluster.setNetworkController(mNetworkController);
signalClusterKeyguard.setSecurityController(mSecurityController);
signalClusterKeyguard.setNetworkController(mNetworkController);
signalClusterQs.setSecurityController(mSecurityController);
signalClusterQs.setNetworkController(mNetworkController);
final boolean isAPhone = mNetworkController.hasVoiceCallingFeature();
if (isAPhone) {
mNetworkController.addEmergencyListener(mHeader);
}
mFlashlightController = new FlashlightController(mContext);
mKeyguardBottomArea.setFlashlightController(mFlashlightController);
mKeyguardBottomArea.setPhoneStatusBar(this);
mKeyguardBottomArea.setUserSetupComplete(mUserSetup);
mAccessibilityController = new AccessibilityController(mContext);
mKeyguardBottomArea.setAccessibilityController(mAccessibilityController);
mNextAlarmController = new NextAlarmController(mContext);
mKeyguardMonitor = new KeyguardMonitor(mContext);
if (UserSwitcherController.isUserSwitcherAvailable(UserManager.get(mContext))) {
mUserSwitcherController = new UserSwitcherController(mContext, mKeyguardMonitor,
mHandler);
}
mKeyguardUserSwitcher = new KeyguardUserSwitcher(mContext,
(ViewStub) mStatusBarWindow.findViewById(R.id.keyguard_user_switcher),
mKeyguardStatusBar, mNotificationPanel, mUserSwitcherController);
// Set up the quick settings tile panel
mQSPanel = (QSPanel) mStatusBarWindow.findViewById(R.id.quick_settings_panel);
if (mQSPanel != null) {
final QSTileHost qsh = new QSTileHost(mContext, this,
mBluetoothController, mLocationController, mRotationLockController,
mNetworkController, mZenModeController, mHotspotController,
mCastController, mFlashlightController,
mUserSwitcherController, mKeyguardMonitor,
mSecurityController);
mQSPanel.setHost(qsh);
mQSPanel.setTiles(qsh.getTiles());
mBrightnessMirrorController = new BrightnessMirrorController(mStatusBarWindow);
mQSPanel.setBrightnessMirror(mBrightnessMirrorController);
mHeader.setQSPanel(mQSPanel);
qsh.setCallback(new QSTileHost.Callback() {
@Override
public void onTilesChanged() {
mQSPanel.setTiles(qsh.getTiles());
}
});
}
// User info. Trigger first load.
mHeader.setUserInfoController(mUserInfoController);
mKeyguardStatusBar.setUserInfoController(mUserInfoController);
mKeyguardStatusBar.setUserSwitcherController(mUserSwitcherController);
mUserInfoController.reloadUserInfo();
mHeader.setBatteryController(mBatteryController);
((BatteryMeterView) mStatusBarView.findViewById(R.id.battery)).setBatteryController(
mBatteryController);
mKeyguardStatusBar.setBatteryController(mBatteryController);
mHeader.setNextAlarmController(mNextAlarmController);
PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
mBroadcastReceiver.onReceive(mContext,
new Intent(pm.isScreenOn() ? Intent.ACTION_SCREEN_ON : Intent.ACTION_SCREEN_OFF));
// receive broadcasts
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
filter.addAction(Intent.ACTION_SCREEN_OFF);
filter.addAction(Intent.ACTION_SCREEN_ON);
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)
resetUserSetupObserver();
// 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));
return mStatusBarView;
}
