Android13-SystemUI_下拉栏-亮度调节不隐藏下拉栏

未修改前效果，滑动会隐藏下拉栏

亮度控件ToggleSeekBar所在的布局文件quick_settings_brightness_dialog.xml

    <com.android.systemui.settings.brightness.BrightnessSliderView
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/brightness_slider"
        android:layout_width="match_parent"
        android:layout_height="@dimen/brightness_mirror_height"
        android:layout_gravity="center"
        android:contentDescription="@string/accessibility_brightness"
        android:importantForAccessibility="no" >

        <com.android.systemui.settings.brightness.ToggleSeekBar
            android:id="@+id/slider"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:minHeight="48dp"
            android:thumb="@null"
            android:background="@null"
            android:paddingStart="0dp"
            android:paddingEnd="0dp"
            android:progressDrawable="@drawable/brightness_progress_drawable"
            android:splitTrack="false"
        />
    </com.android.systemui.settings.brightness.BrightnessSliderView>

BrightnessSliderController.Factory负责加载

        public BrightnessSliderController create(Context context, @Nullable ViewGroup viewRoot) {
            int layout = getLayout();
            BrightnessSliderView root = (BrightnessSliderView) LayoutInflater.from(context)
                    .inflate(layout, viewRoot, false);
            return new BrightnessSliderController(root, mFalsingManager);
        }

        /** Get the layout to inflate based on what slider to use */
        private int getLayout() {
            return R.layout.quick_settings_brightness_dialog;
        }

在QSPanelController构造方法调用，并赋值给QSPanel

public class QSPanelController extends QSPanelControllerBase<QSPanel> {

    @Inject
    QSPanelController(QSPanel view, TunerService tunerService,
            QSTileHost qstileHost, QSCustomizerController qsCustomizerController,
            @Named(QS_USING_MEDIA_PLAYER) boolean usingMediaPlayer,
            @Named(QS_PANEL) MediaHost mediaHost,
            QSTileRevealController.Factory qsTileRevealControllerFactory,
            DumpManager dumpManager, MetricsLogger metricsLogger, UiEventLogger uiEventLogger,
            QSLogger qsLogger, BrightnessController.Factory brightnessControllerFactory,
            BrightnessSliderController.Factory brightnessSliderFactory,
            FalsingManager falsingManager,
            StatusBarKeyguardViewManager statusBarKeyguardViewManager,
            FeatureFlags featureFlags) {
        super(view, qstileHost, qsCustomizerController, usingMediaPlayer, mediaHost,
                metricsLogger, uiEventLogger, qsLogger, dumpManager);
        mTunerService = tunerService;
        mQsCustomizerController = qsCustomizerController;
        mQsTileRevealControllerFactory = qsTileRevealControllerFactory;
        mFalsingManager = falsingManager;
				
				//这里添加到QSPanel中
        mBrightnessSliderController = brightnessSliderFactory.create(getContext(), mView);
        mView.setBrightnessView(mBrightnessSliderController.getRootView());

        mBrightnessController = brightnessControllerFactory.create(mBrightnessSliderController);
        mBrightnessMirrorHandler = new BrightnessMirrorHandler(mBrightnessController);
        mStatusBarKeyguardViewManager = statusBarKeyguardViewManager;
        mView.setUsingCombinedHeaders(featureFlags.isEnabled(COMBINED_QS_HEADERS));
    }

BrightnessSliderController类设置了ToggleSeekBar的进度事件

    private final SeekBar.OnSeekBarChangeListener mSeekListener =
            new SeekBar.OnSeekBarChangeListener() {
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            if (mListener != null) {
                mListener.onChanged(mTracking, progress, false);
            }
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
            mTracking = true;

            if (mListener != null) {
                mListener.onChanged(mTracking, getValue(), false);
            }
            Log.i("cusTAG", "onStartTrackingTouch: ");
            //showMirror和hideMirror控制了下拉栏的隐藏效果
//            if (mMirrorController != null) {
//                mMirrorController.showMirror();
//                mMirrorController.setLocationAndSize(mView);
//            }
        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
            mTracking = false;
            Log.i("cusTAG", "onStopTrackingTouch: ");
            if (mListener != null) {
                mListener.onChanged(mTracking, getValue(), true);
            }

//            if (mMirrorController != null) {
//                mMirrorController.hideMirror();
//            }
        }
    };

BrightnessMirrorController滑动的时候有一个背景的效果，在构造方法会把自己添加进入

    public BrightnessMirrorController(NotificationShadeWindowView statusBarWindow,
            NotificationPanelViewController notificationPanelViewController,
            NotificationShadeDepthController notificationShadeDepthController,
            BrightnessSliderController.Factory factory,
            @NonNull Consumer<Boolean> visibilityCallback) {
        mStatusBarWindow = statusBarWindow;
        mToggleSliderFactory = factory;
        mBrightnessMirror = statusBarWindow.findViewById(R.id.brightness_mirror_container);
        mToggleSliderController = setMirrorLayout();
        mNotificationPanel = notificationPanelViewController;
        mDepthController = notificationShadeDepthController;
        mNotificationPanel.setPanelAlphaEndAction(() -> {
            mBrightnessMirror.setVisibility(View.INVISIBLE);
        });
        mVisibilityCallback = visibilityCallback;
        updateResources();
    }

    private BrightnessSliderController setMirrorLayout() {
        Context context = mBrightnessMirror.getContext();
        BrightnessSliderController controller = mToggleSliderFactory.create(context,
                mBrightnessMirror);
        controller.init();

        mBrightnessMirror.addView(controller.getRootView(), ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.WRAP_CONTENT);

        return controller;
    }

    public void showMirror() {
        mBrightnessMirror.setVisibility(View.VISIBLE);
        mVisibilityCallback.accept(true);
        //0代表透明，实现隐藏效果
        mNotificationPanel.setPanelAlpha(0, true /* animate */);
        mDepthController.setBrightnessMirrorVisible(true);
    }

    public void hideMirror() {
        mVisibilityCallback.accept(false);
        mNotificationPanel.setPanelAlpha(255, true /* animate */);
        mDepthController.setBrightnessMirrorVisible(false);
    }

效果