【Launcher3系列】Android 11 长按图标卸载 ，去掉顶部卸载、移除

去掉 顶部移除和卸载
Launcher.java

protected void setupViews() {
        mDragLayer = findViewById(R.id.drag_layer);
        mFocusHandler = mDragLayer.getFocusIndicatorHelper();
        mWorkspace = mDragLayer.findViewById(R.id.workspace);
        mWorkspace.initParentViews(mDragLayer);
        mOverviewPanel = findViewById(R.id.overview_panel);
        mHotseat = findViewById(R.id.hotseat);
        mHotseat.setWorkspace(mWorkspace);

        // Setup the drag layer
        mDragLayer.setup(mDragController, mWorkspace);

        mWorkspace.setup(mDragController);
        // Until the workspace is bound, ensure that we keep the wallpaper offset locked to the
        // default state, otherwise we will update to the wrong offsets in RTL
        mWorkspace.lockWallpaperToDefaultPage();
        mWorkspace.bindAndInitFirstWorkspaceScreen(null /* recycled qsb */);
      if(FeatureFlags.getGmsVersion() != null && !FeatureFlags.getGmsVersion().equals("")){
         if(!FeatureFlags.getGmsVersion().contains("go")){
                mWorkspace.bindAndInitFirstWorkspaceScreenQsb(null /* recycled qsb */);
            }
      }        
        mDragController.addDragListener(mWorkspace);

        // Get the search/delete/uninstall bar
        mDropTargetBar = mDragLayer.findViewById(R.id.drop_target_bar);

        // Setup Apps
        mAppsView = findViewById(R.id.apps_view);

        // Setup Scrim
        mScrimView = findViewById(R.id.scrim_view);


        //去掉移除和删除按钮
        // Setup the drag controller (drop targets have to be added in reverse order in priority)
//        mDropTargetBar.setup(mDragController);

        mAllAppsController.setupViews(mAppsView, mScrimView);
    }

Workspace.java

  @Override
    public void onDragStart(DragObject dragObject, DragOptions options) {
        if (ENFORCE_DRAG_EVENT_ORDER) {
            enforceDragParity("onDragStart", 0, 0);
        }

        if (mDragInfo != null && mDragInfo.cell != null) {
            CellLayout layout = (CellLayout) mDragInfo.cell.getParent().getParent();
            layout.markCellsAsUnoccupiedForView(mDragInfo.cell);
        }

        if (mOutlineProvider != null) {
            if (dragObject.dragView != null) {
                Bitmap preview = dragObject.dragView.getPreviewBitmap();

                // The outline is used to visualize where the item will land if dropped
                mOutlineProvider.generateDragOutline(preview);
            }
        }

        updateChildrenLayersEnabled();

        // Do not add a new page if it is a accessible drag which was not started by the workspace.
        // We do not support accessibility drag from other sources and instead provide a direct
        // action for move/add to homescreen.
        // When a accessible drag is started by the folder, we only allow rearranging withing the
        // folder.
        boolean addNewPage = !(options.isAccessibleDrag && dragObject.dragSource != this);

        if (addNewPage) {
            mDeferRemoveExtraEmptyScreen = false;
            addExtraEmptyScreenOnDrag();

            if (dragObject.dragInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET
                    && dragObject.dragSource != this) {
                // When dragging a widget from different source, move to a page which has
                // enough space to place this widget (after rearranging/resizing). We special case
                // widgets as they cannot be placed inside a folder.
                // Start at the current page and search right (on LTR) until finding a page with
                // enough space. Since an empty screen is the furthest right, a page must be found.
                int currentPage = getPageNearestToCenterOfScreen();
                for (int pageIndex = currentPage; pageIndex < getPageCount(); pageIndex++) {
                    CellLayout page = (CellLayout) getPageAt(pageIndex);
                    if (page.hasReorderSolution(dragObject.dragInfo)) {
                        setCurrentPage(pageIndex);
                        break;
                    }
                }
            }
        }

        // Always enter the spring loaded mode
        //移除长按移除状态
//        mLauncher.getStateManager().goToState(SPRING_LOADED);

        mStatsLogManager.logger().withItemInfo(dragObject.dragInfo)
                .withInstanceId(dragObject.logInstanceId)
                .log(LauncherEvent.LAUNCHER_ITEM_DRAG_STARTED);
    }

微件新增卸载 SystemShortcut.java

` public static final Factory APP_INFO = AppInfo::new;

public static class AppInfo extends SystemShortcut {

    // ... //
}

//====修改start==== 创建UNINSTALL内部对象 public static final Factory UNINSTALL = UnInstall::new;

public static class UnInstall extends SystemShortcut {

    public UnInstall(BaseDraggingActivity target, ItemInfo itemInfo) {
        super(R.drawable.ic_uninstall_no_shadow, R.string.app_info_drop_uninstall_label, target,
                itemInfo);
    }

    @Override
    public void onClick(View view) {
        dismissTaskMenuView(mTarget);
        ComponentName cn = getUninstallTarget(mItemInfo);
        if (cn == null) {
            // System applications cannot be installed. For now, show a toast explaining that.
            // We may give them the option of disabling apps this way.
            Toast.makeText(mTarget, R.string.uninstall_system_app_text, Toast.LENGTH_SHORT).show();
            return;
        }
        try {
            Intent i = Intent.parseUri(mTarget.getString(R.string.delete_package_intent), 0)
                    .setData(Uri.fromParts("package", cn.getPackageName(), cn.getClassName()))
                    .putExtra(Intent.EXTRA_USER, mItemInfo.user);
            mTarget.startActivity(i);
            FileLog.d("Uninstall", "start uninstall activity " + cn.getPackageName());
            return;
        } catch (URISyntaxException e) {
            Log.e("Uninstall", "Failed to parse intent to start uninstall activity for item=" + mItemInfo);
            return;
        }
    }
}

/**
 * @return the component name that should be uninstalled or null.
 */
ComponentName getUninstallTarget(ItemInfo item) {
    Intent intent = null;
    UserHandle user = null;
    if (item != null &&
            item.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION) {
        intent = item.getIntent();
        user = item.user;
    }
    if (intent != null) {
        LauncherActivityInfo info = mTarget.getSystemService(LauncherApps.class)
                .resolveActivity(intent, user);
        if (info != null
                && (info.getApplicationInfo().flags & ApplicationInfo.FLAG_SYSTEM) == 0) {
            return info.getComponentName();
        }
    }
    return null;
}

//====修改end====

public static final Factory<BaseDraggingActivity> INSTALL = (activity, itemInfo) -> {
    // ... //
};

`