下拉栏
架构图
SystemServer
public final class SystemServer {
private void startOtherServices() {
mActivityManagerService.systemReady(new Runnable() {
@Override
public void run() {
Trace.traceBegin(Trace.TRACE_TAG_SYSTEM_SERVER, "StartSystemUI");
try {
startSystemUi(context);
} catch (Throwable e) {
reportWtf("starting System UI", e);
}
Trace.traceEnd(Trace.TRACE_TAG_SYSTEM_SERVER);
}
}
}
static final void startSystemUi(Context context) {
Intent intent = new Intent();
intent.setComponent(new ComponentName("com.android.systemui",
"com.android.systemui.SystemUIService"));
intent.addFlags(Intent.FLAG_DEBUG_TRIAGED_MISSING);
//Slog.d(TAG, "Starting service: " + intent);
context.startServiceAsUser(intent, UserHandle.SYSTEM);
}
}
SystemUIService
public class SystemUIService extends Service {
@Override
public void onCreate() {
super.onCreate();
((SystemUIApplication) getApplication()).startServicesIfNeeded();
}
}
SystemUIApplication
public class SystemUIApplication extends Application {
private static final String TAG = "SystemUIService";
private static final boolean DEBUG = false;
/**
* The classes of the stuff to start.
*/
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,
Divider.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,
com.android.systemui.keyboard.KeyboardUI.class,
com.android.systemui.tv.pip.PipUI.class,
com.android.systemui.shortcut.ShortcutKeyDispatcher.class,
com.android.systemui.VendorServices.class
};
public void startServicesIfNeeded() {
startServicesIfNeeded(SERVICES);
}
}
SystemBars
状态栏和导航栏
public class SystemBars extends SystemUI implements ServiceMonitor.Callbacks {
@Override
public void onNoService() {
if (DEBUG) Log.d(TAG, "onNoService");
// <string name="config_statusBarComponent" translatable="false">com.android.systemui.statusbar.phone.PhoneStatusBar</string>
createStatusBarFromConfig(); // fallback to using an in-process implementation
}
}
PhoneStatusBar
public class PhoneStatusBar extends BaseStatusBar {
@Override
public void start() {
super.start(); // calls createAndAddWindows()
addNavigationBar();
}
@Override
public void createAndAddWindows() {
addStatusBarWindow();
}
private void addStatusBarWindow() {
makeStatusBarView();
}
// ================================================================================
// Constructing the view
// ================================================================================
protected PhoneStatusBarView makeStatusBarView() {
inflateStatusBarWindow(context);
// Set up the quick settings tile panel
AutoReinflateContainer container = (AutoReinflateContainer) mStatusBarWindow.findViewById(
R.id.qs_auto_reinflate_container);
if (container != null) {
final QSTileHost qsh = SystemUIFactory.getInstance().createQSTileHost(mContext, this,
mBluetoothController, mLocationController, mRotationLockController,
mNetworkController, mZenModeController, mHotspotController,
mCastController, mFlashlightController,
mUserSwitcherController, mUserInfoController, mKeyguardMonitor,
mSecurityController, mBatteryController, mIconController,
mNextAlarmController);
mBrightnessMirrorController = new BrightnessMirrorController(mStatusBarWindow);
container.addInflateListener(new InflateListener() {
@Override
public void onInflated(View v) {
QSContainer qsContainer = (QSContainer) v.findViewById(
R.id.quick_settings_container);
qsContainer.setHost(qsh);
mQSPanel = qsContainer.getQsPanel();
mQSPanel.setBrightnessMirror(mBrightnessMirrorController);
mKeyguardStatusBar.setQSPanel(mQSPanel);
mHeader = qsContainer.getHeader();
initSignalCluster(mHeader);
mHeader.setActivityStarter(PhoneStatusBar.this);
}
});
}
}
protected void inflateStatusBarWindow(Context context) {
mStatusBarWindow = (StatusBarWindowView) View.inflate(context,
R.layout.super_status_bar, null);
}
}
QSPanel
public class QSPanel extends LinearLayout implements Tunable, Callback {
protected final View mBrightnessView;
private BrightnessController mBrightnessController;
public QSPanel(Context context, AttributeSet attrs) {
super(context, attrs);
mBrightnessView = LayoutInflater.from(context).inflate(
R.layout.quick_settings_brightness_dialog, this, false);
addView(mBrightnessView);
mBrightnessController = new BrightnessController(getContext(),
(ImageView) findViewById(R.id.brightness_icon),
(ToggleSlider) findViewById(R.id.brightness_slider));
}
}
