Android13 Hotseat客制化--Hotseat修改布局、支持滑动、去掉开机弹动效果、禁止创建文件夹
需求如题，实现效果如下 ：
固定Hotseat的padding位置、固定高度
step1 在FeatureFlags.java中添加flag,以兼容原生态代码
public static final boolean STATIC_HOTSEAT_PADDING = true;//hotseat area fixedstep2:在dimens.xml中添加padding值和高度值
<dimen name="hotseat_padding_left">0px</dimen><dimen name="hotseat_padding_top">0px</dimen><dimen name="hotseat_padding_right">0px</dimen><dimen name="hotseat_padding_bottom">0px</dimen><dimen name="hotseat_height">218px</dimen>step3:Hotseat.java的public void setInsets(Rect insets)接口中，改为高度不通过计算，直接读取dimension
private final int mHotseatHeight;public Hotseat(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);mQsb = LayoutInflater.from(context).inflate(R.layout.search_container_hotseat, this, false);addView(mQsb);mQsbHeight = getResources().getDimensionPixelSize(R.dimen.qsb_widget_height);mHotseatHeight = getResources().getDimensionPixelSize(R.dimen.hotseat_height);//added by Kevin}public void setInsets(Rect insets){.....} else {mQsb.setVisibility(View.VISIBLE);lp.gravity = Gravity.BOTTOM;lp.width = ViewGroup.LayoutParams.MATCH_PARENT;//lp.width = ViewGroup.LayoutParams.WRAP_CONTENT;/*lp.height = grid.isTaskbarPresent? grid.workspacePadding.bottom: grid.hotseatBarSizePx + insets.bottom;*/if(FeatureFlags.STATIC_HOTSEAT_PADDING)lp.height = mHotseatHeight;//Kevin.Ye addedelselp.height = grid.isTaskbarPresent? grid.workspacePadding.bottom: grid.hotseatBarSizePx + insets.bottom;}Rect padding = grid.getHotseatLayoutPadding(getContext());setPadding(padding.left, padding.top, padding.right, padding.bottom);setLayoutParams(lp);InsettableFrameLayout.dispatchInsets(this, insets);step4:在DeviceProfile.java的public Rect getHotseatLayoutPadding(Context context)接口的最后添加代码，从dimens中读取padding值
} else {// We want the edges of the hotseat to line up with the edges of the workspace, but the// icons in the hotseat are a different size, and so don't line up perfectly. To account// for this, we pad the left and right of the hotseat with half of the difference of a// workspace cell vs a hotseat cell.float workspaceCellWidth = (float) widthPx / inv.numColumns;float hotseatCellWidth = (float) widthPx / numShownHotseatIcons;int hotseatAdjustment = Math.round((workspaceCellWidth - hotseatCellWidth) / 2);mHotseatPadding.set(hotseatAdjustment + workspacePadding.left + cellLayoutPaddingPx.left+ mInsets.left, hotseatBarTopPaddingPx,hotseatAdjustment + workspacePadding.right + cellLayoutPaddingPx.right+ mInsets.right,hotseatBarSizePx - hotseatCellHeightPx - hotseatBarTopPaddingPx+ mInsets.bottom);}if(FeatureFlags.STATIC_HOTSEAT_PADDING){//Modified by Kevin.Ye startResources res = context.getResources();int hotseatPaddingLeft = res.getDimensionPixelSize(R.dimen.hotseat_padding_left);int hotseatPaddingTop = res.getDimensionPixelSize(R.dimen.hotseat_padding_top);int hotseatPaddingRight = res.getDimensionPixelSize(R.dimen.hotseat_padding_right);int hotseatPaddingBottom = res.getDimensionPixelSize(R.dimen.hotseat_padding_bottom);mHotseatPadding.set(hotseatPaddingLeft,hotseatPaddingTop,hotseatPaddingRight,hotseatPaddingBottom);}return mHotseatPadding;step5:想要hotseat可以左右滑动，在launcher.xml中为hotseat添加一个HorizontalScrollView
<!--Kevin.Ye added start--><HorizontalScrollViewandroid:id="@+id/hotseat_container"android:layout_width="match_parent"android:layout_height="309px"android:layout_gravity="bottom"android:scrollbars="none"><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="match_parent"android:orientation="horizontal"><includeandroid:id="@+id/hotseat"layout="@layout/hotseat"android:visibility="gone"/></LinearLayout></HorizontalScrollView><!--Kevin.Ye added end-->step6:需要定义hotseat的边距还可以在hotseat.xml中定义,可以摆放hotseat里图标数量在device_profile.xml中修改
这里图标宽度 258 间隔27，因此总宽度是 (258+27)x9-27=2538
如果摆放9个icon,那hotseat.xml的定义应该是这样
<com.android.launcher3.Hotseatxmlns:android="http://schemas.android.com/apk/res/android"xmlns:launcher="http://schemas.android.com/apk/res-auto"android:id="@+id/hotseat"android:layout_width="2538px"android:layout_height="match_parent"android:layout_gravity="bottom"android:layout_marginLeft="40px"android:layout_marginRight="40px"android:layout_marginBottom="92px"android:theme="@style/HomeScreenElementTheme"android:importantForAccessibility="no"launcher:containerType="hotseat"/>如果摆放6个图标，宽度应该是 （258+27)x6-27=1683, marginLeft/Right (1920-1683)/2=118.5
<com.android.launcher3.Hotseatxmlns:android="http://schemas.android.com/apk/res/android"xmlns:launcher="http://schemas.android.com/apk/res-auto"android:id="@+id/hotseat"android:layout_width="1683px"android:layout_height="match_parent"android:layout_gravity="bottom"android:layout_marginLeft="118.5px"android:layout_marginRight="118.5px"android:layout_marginBottom="92px"android:theme="@style/HomeScreenElementTheme"android:importantForAccessibility="no"launcher:containerType="hotseat"/>重启开机，hotseat会弹动6下，其实是显示操作提示，类似帮助引导
功能是在DiscoveryBounce.java中实现的，Launcher.java中调用,去掉调用即可实现
step1:修改Launcher.java
@CallSuperprotected void onDeferredResumed() {logStopAndResume(true /* isResume */);// Process any items that were added while Launcher was away.ItemInstallQueue.INSTANCE.get(this).resumeModelPush(FLAG_ACTIVITY_PAUSED);// Refresh shortcuts if the permission changed.mModel.validateModelDataOnResume();// Set the notification listener and fetch updated notifications when we resumeNotificationListener.addNotificationsChangedListener(mPopupDataProvider);//DiscoveryBounce.showForHomeIfNeeded(this);//Kevin.Ye added for not showing DiscoveryBouncemAppWidgetHost.setActivityResumed(true);}禁止在hotseat中形成图标文件夹
step1:FeatureFlags.java添加flag
public static final boolean HOTSEAT_FOLDER = false;//Kevin.Ye added for not creating folder on hotseatstep2:Workspace.java中添加判断即可
boolean createUserFolderIfNecessary(View newView, int container, CellLayout target,int[] targetCell, float distance, boolean external, DragObject d) {//added by Kevin.Ye startif(!FeatureFlags.HOTSEAT_FOLDER){if(mLauncher.isHotseatLayout(target)) return false;//}//add endif (distance > target.getFolderCreationRadius(targetCell)) return false;View v = target.getChildAt(targetCell[0], targetCell[1]);