android 9.0 Launcher3 remove the drawer, show all app

Renderings

Modify ideas

1, increasing the global control variable sys.launcher3.is_full_app , to dynamically switch

2, two sets of layout increases, without the corresponding drawer and drawer

3, remove allAppsButton

4, the icon AllAppsContainerView are loaded into the Workspace

5, the newly installed app icon is automatically added to the Workspace

6. Replace Workspace icon long press the delete option to cancel

7, the drawer pull page displayed on the screen gesture

8, to modify the page indication line dot

The Code

1, increase global control variables sys.launcher3.is_full_app

1) increase the static method isDisableAllApps in LauncherAppState (), the value sys.launcher3.is_full_app by modifying the customized Settings

vendor\mediatek\proprietary\packages\apps\Launcher3\src\com\android\launcher3\LauncherAppState.java

   private static  Context mContext;

public static boolean isDisableAllApps() {
        if (mContext != null) {
            return Settings.System.getInt(mContext.getContentResolver(), 
                "sys.launcher3.is_full_app", 0) == 1;
        }
        return true;
    }

vendor\mediatek\proprietary\packages\apps\Launcher3\AndroidManifest-common.xml

2) AndroidManifest-common.xml increased authority

<uses-permission android:name="android.permission.WRITE_SETTINGS" />

3) increase in SwitchPreference to dynamically modify the SettingsActivity sys.launcher3.is_full_app

vendor\mediatek\proprietary\packages\apps\Launcher3\src\com\android\launcher3\SettingsActivity.java

In the inner class LauncherSettingsFragment override onPreferenceTreeClick () Click to listen SwitchPreference

/**
     * This fragment shows the launcher preferences.
     */
    public static class LauncherSettingsFragment extends PreferenceFragment {
    
    .....
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);

    ....

            //读取保存的值，初始化 SwitchPreference 的初始状态，是否选中
            int isFull = Settings.System.getInt(getActivity().getContentResolver(), 
                "sys.launcher3.is_full_app", 0);
            Log.d("Launcher3", "sys.launcher3.is_full_app="+isFull);
            SwitchPreference fullSwitch = (SwitchPreference) findPreference("pref_is_full_app");
            fullSwitch.setChecked(isFull==1);
     }


    
    //add for change is_full_app value
    @Override
    public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
            boolean result = true;
            final String key = preference.getKey();

             if ("pref_is_full_app".equals(key)) {
                boolean checked = ((SwitchPreference) preference).isChecked();

                Settings.System.putInt(getActivity().getContentResolver(), "sys.launcher3.is_full_app",
                        checked ? 1 : 0);

                Log.e("Launcher3", "SwitchPreference checked="+checked);

                // Value has changed
                ProgressDialog.show(getActivity(),
                        null /* title */,
                        getActivity().getString(R.string.full_app_override_progress),
                        true /* indeterminate */,
                        false /* cancelable */);
                new LooperExecutor(LauncherModel.getWorkerLooper()).execute(
                        new OverrideApplyHandler(getActivity()));
                
            }
            return result;
        }

}

Click SwitchPreference sys.launcher3.is_full_app need to save the new value, and clear Launcher3 cache, delay start and end the current process

Clear Cache method clearApplicationUserData compile error in Launcher3, so be real clear cache operation by sending a broadcast to the Setting

    //add for change is_full_app value
    private static class OverrideApplyHandler implements Runnable {

        private final Context mContext;

        private OverrideApplyHandler(Context context) {
            mContext = context;
        }

        @Override
        public void run() {
            // Clear the icon cache.
            LauncherAppState.getInstance(mContext).getIconCache().clear();

            // Wait for it
            try {
                Thread.sleep(1000);
            } catch (Exception e) {
                Log.e("Launcher3", "Error waiting", e);
            }

            // Schedule an alarm before we kill ourself.
            Intent homeIntent = new Intent(Intent.ACTION_MAIN)
                    .addCategory(Intent.CATEGORY_HOME)
                    .setPackage(mContext.getPackageName())
                    .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            PendingIntent pi = PendingIntent.getActivity(mContext, 42,
                    homeIntent, PendingIntent.FLAG_CANCEL_CURRENT | PendingIntent.FLAG_ONE_SHOT);
            mContext.getSystemService(AlarmManager.class).setExact(
                    AlarmManager.ELAPSED_REALTIME, SystemClock.elapsedRealtime() + 50, pi);

            //clear data will kill process
            Intent intent = new Intent("com.android.action.CLEAR_APP_DATA");
            intent.putExtra("pkgName", "com.android.launcher3");
            intent.addFlags(0x01000000);
            mContext.sendBroadcast(intent);
            Log.i("Launcher3", "Clearing user data com.android.launcher3");

            // Kill process
            android.os.Process.killProcess(android.os.Process.myPid());
        }
    }

4) xml file corresponding modifications launcher_preferences SettingsActivity

vendor\mediatek\proprietary\packages\apps\Launcher3\res\xml\launcher_preferences.xml

 <SwitchPreference
        android:key="pref_is_full_app"
        android:title="@string/is_full_app_title"
        android:summary="@string/is_full_app_desc"
        android:defaultValue="false"
        android:persistent="true" />

Corresponding string document is not posted, under their own increase on the line

2, two sets of layout increases, without the corresponding drawer and drawer

Load layout xml file corresponding to vendor \ mediatek \ proprietary \ packages \ apps \ Launcher3 \ res \ xml \ device_profiles.xml

Launcher3 be determined by obtaining minWidthDps and minHeightDps which profile is loaded, I flat-panel resolution is 1280 * 800, an increase of two profile nodes

 <profile
        launcher:name="Tablet"
        launcher:minWidthDps="376"
        launcher:minHeightDps="586"
        launcher:numRows="4"
        launcher:numColumns="5"
        launcher:numFolderRows="4"
        launcher:numFolderColumns="5"
        launcher:iconSize="50"
        launcher:iconTextSize="11"
        launcher:numHotseatIcons="5"
        launcher:defaultLayoutId="@xml/default_workspace_tb_5x6"
        />

    <profile
        launcher:name="Tablet_no_all_app"
        launcher:minWidthDps="380"
        launcher:minHeightDps="590"
        launcher:numRows="4"
        launcher:numColumns="5"
        launcher:numFolderRows="4"
        launcher:numFolderColumns="5"
        launcher:iconSize="50"
        launcher:iconTextSize="11"
        launcher:numHotseatIcons="4"
        launcher:defaultLayoutId="@xml/default_workspace_tb_5x6_no_all_app"
        />

You need a corresponding increase in four files in the xml file, respectively default_workspace_tb_5x6.xml dw_hotseat_tb.xml default_workspace_tb_5x6_no_all_app.xml dw_hotseat_tb_no_all_app.xml

The advantage is that you can customize different layout files loaded content, the above configuration meaning briefly about, namely the minimum width, minimum height, layout of rows and columns, folder layout of rows and columns, icon size, icon text size, number of hotSeat, load the layout file

In InvariantDeviceProfile () to determine whether you need to load Tablet_no_all_app profile

vendor\mediatek\proprietary\packages\apps\Launcher3\src\com\android\launcher3\InvariantDeviceProfile.java

public InvariantDeviceProfile(Context context) {

        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        Display display = wm.getDefaultDisplay();
        DisplayMetrics dm = new DisplayMetrics();
        display.getMetrics(dm);

        Point smallestSize = new Point();
        Point largestSize = new Point();
        display.getCurrentSizeRange(smallestSize, largestSize);

        // This guarantees that width < height
        minWidthDps = Utilities.dpiFromPx(Math.min(smallestSize.x, smallestSize.y), dm);
        minHeightDps = Utilities.dpiFromPx(Math.min(largestSize.x, largestSize.y), dm);
        Log.i("Launcher3.profiles", "orignalminWidthDps="+minWidthDps + "  orignalminHeightDps="+minHeightDps);
        
        //add for load no_all_app xml
        if (LauncherAppState.isDisableAllApps()) {
            Log.e("Launcher3.profiles", "load no all app profiles");
            //对应 device_profiles.xml 中 Tablet_no_all_app 的值
            minWidthDps = 380.0f;
            minHeightDps = 590.0f;
        }
        .....
}

3, remove allAppsButton

vendor\mediatek\proprietary\packages\apps\Launcher3\src\com\android\launcher3\Hotseat.java

The resetLayout () in FeatureFlags.NO_ALL_APPS_ICON replaced LauncherAppState.isDisableAllApps ()

void resetLayout(boolean hasVerticalHotseat) {
        mContent.removeAllViewsInLayout();
        mHasVerticalHotseat = hasVerticalHotseat;
        InvariantDeviceProfile idp = mLauncher.getDeviceProfile().inv;
        if (hasVerticalHotseat) {
            mContent.setGridSize(1, idp.numHotseatIcons);
        } else {
            mContent.setGridSize(idp.numHotseatIcons, 1);
        }

        //if (!FeatureFlags.NO_ALL_APPS_ICON) {
        /// add for check is need allappbutton
        if (!LauncherAppState.isDisableAllApps()) {
            // Add the Apps button
            Context context = getContext();
            DeviceProfile grid = mLauncher.getDeviceProfile();

        ...
}

4, the icon AllAppsContainerView are loaded into the Workspace

vendor\mediatek\proprietary\packages\apps\Launcher3\src\com\android\launcher3\model\LoaderTask.java

run () determines an increase in added verifyApplications (), as modified InstallShortcutReceiver the public PendingInstallShortcutInfo

public void run() {
        synchronized (this) {
            // Skip fast if we are already stopped.
            if (mStopped) {
                return;
            }
        }
        ....

        // second step
        TraceHelper.partitionSection(TAG, "step 2.1: loading all apps");
        loadAllApps();

        //add for load all app on workspace
        if (LauncherAppState.isDisableAllApps()) {
            android.util.Log.e("Launcher3", "verifyApplications()");
            verifyApplications();
        }

        ....
}

 //add for load all app on workspace
private void verifyApplications() {
        final Context context = mApp.getContext();
        ArrayList<Pair<ItemInfo, Object>> installQueue = new ArrayList<>();
        final List<UserHandle> profiles = mUserManager.getUserProfiles();
        for (UserHandle user : profiles) {
            final List<LauncherActivityInfo> apps = mLauncherApps.getActivityList(null, user);
            ArrayList<InstallShortcutReceiver.PendingInstallShortcutInfo> added = new ArrayList<InstallShortcutReceiver.PendingInstallShortcutInfo>();
            synchronized (this) {
                for (LauncherActivityInfo app : apps) {
                    InstallShortcutReceiver.PendingInstallShortcutInfo pendingInstallShortcutInfo = new InstallShortcutReceiver.PendingInstallShortcutInfo(app, context);
                    added.add(pendingInstallShortcutInfo);
                    installQueue.add(pendingInstallShortcutInfo.getItemInfo());
                }
            }
            if (!added.isEmpty()) {
                mApp.getModel().addAndBindAddedWorkspaceItems(installQueue);
            }
        }
    }

vendor\mediatek\proprietary\packages\apps\Launcher3\src\com\android\launcher3\model\BaseModelUpdateTask.java

Comment run return () in

@Override
    public final void run() {
        if (!mModel.isModelLoaded()) {
            if (DEBUG_TASKS) {
                Log.d(TAG, "Ignoring model task since loader is pending=" + this);
            }
            // Loader has not yet run.
            //annotaion for load all app on workspace
            // return;
        }
        execute(mApp, mDataModel, mAllAppsList);
    }

5, the newly installed app icon is automatically added to the Workspace

vendor\mediatek\proprietary\packages\apps\Launcher3\src\com\android\launcher3\model\PackageUpdatedTask.java

execute () determines an increase in added updateToWorkSpace ()

public void execute(LauncherAppState app, BgDataModel dataModel, AllAppsList appsList) {

    ....

     final ArrayList<AppInfo> addedOrModified = new ArrayList<>();
    addedOrModified.addAll(appsList.added);
        
    //add for load new install app on workspace 
    if (LauncherAppState.isDisableAllApps()) {
        android.util.Log.e("cczLauncher3", "updateToWorkSpace()");
        updateToWorkSpace(context, app, appsList);
    }
    
    ...
}

//add for load new install app on workspace
public void updateToWorkSpace(Context context, LauncherAppState app , AllAppsList appsList){
         ArrayList<Pair<ItemInfo, Object>> installQueue = new ArrayList<>();
        final List<UserHandle> profiles = UserManagerCompat.getInstance(context).getUserProfiles();
        ArrayList<InstallShortcutReceiver.PendingInstallShortcutInfo> added 
        = new ArrayList<InstallShortcutReceiver.PendingInstallShortcutInfo>();
        
        for (UserHandle user : profiles) {
            final List<LauncherActivityInfo> apps = LauncherAppsCompat.getInstance(context).getActivityList(null, user);
            synchronized (this) {
                for (LauncherActivityInfo info : apps) {
                    for (AppInfo appInfo : appsList.added) {
                        if(info.getComponentName().equals(appInfo.componentName)){
                            InstallShortcutReceiver.PendingInstallShortcutInfo mPendingInstallShortcutInfo 
                            =  new InstallShortcutReceiver.PendingInstallShortcutInfo(info,context);
                            added.add(mPendingInstallShortcutInfo);
                            installQueue.add(mPendingInstallShortcutInfo.getItemInfo());
                        }
                    }
                }
            }
        }
        if (!added.isEmpty()) {
            app.getModel().addAndBindAddedWorkspaceItems(installQueue);
        }
    }

6. Replace Workspace icon long press the delete option to cancel

vendor\mediatek\proprietary\packages\apps\Launcher3\src\com\android\launcher3\DeleteDropTarget.java

In setTextBasedOnDragSource (), setControlTypeBasedOnDragSource (), onAccessibilityDrop () to determine whether the increased need to remove the icon

private void setTextBasedOnDragSource(ItemInfo item) {
        if (!TextUtils.isEmpty(mText)) {
            mText = getResources().getString(item.id != ItemInfo.NO_ID
                    ? R.string.remove_drop_target_label
                    : android.R.string.cancel);
            //add for hide deletedroptarget
            if (LauncherAppState.isDisableAllApps()) {
                android.util.Log.e("Launcher3", "hide delete drop target");
                mText = getResources().getString(isCanDrop(item)
                            ? R.string.remove_drop_target_label
                            : android.R.string.cancel);
            }

            requestLayout();
        }
    }

    private void setControlTypeBasedOnDragSource(ItemInfo item) {
        mControlType = item.id != ItemInfo.NO_ID ? ControlType.REMOVE_TARGET
                : ControlType.CANCEL_TARGET;

        //add for hide deletedroptarget [S]
        if (LauncherAppState.isDisableAllApps()) {
            mControlType = isCanDrop(item) ? ControlType.REMOVE_TARGET
                : ControlType.CANCEL_TARGET;
        }        
    }

public void onAccessibilityDrop(View view, ItemInfo item) {
        // Remove the item from launcher and the db, we can ignore the containerInfo in this call
        // because we already remove the drag view from the folder (if the drag originated from
        // a folder) in Folder.beginDrag()
        //add if juge is need remove item from workspace
        if (!LauncherAppState.isDisableAllApps() || isCanDrop(item)) {
            mLauncher.removeItem(view, item, true /* deleteFromDb */);
            mLauncher.getWorkspace().stripEmptyScreens();
            mLauncher.getDragLayer()
                    .announceForAccessibility(getContext().getString(R.string.item_removed));
        }
}

private boolean isCanDrop(ItemInfo item){
        return !(item.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION ||
                item.itemType == LauncherSettings.Favorites.ITEM_TYPE_FOLDER);
}

vendor\mediatek\proprietary\packages\apps\Launcher3\src\com\android\launcher3\dragndrop\DragController.java

drop () added is determined to cancel the current drag operation

private void drop(DropTarget dropTarget, Runnable flingAnimation) {
    ....

    boolean accepted = false;
        if (dropTarget != null) {
            dropTarget.onDragExit(mDragObject);
            if (dropTarget.acceptDrop(mDragObject)) {
                if (flingAnimation != null) {
                    flingAnimation.run();
                } else {
                    dropTarget.onDrop(mDragObject, mOptions);
                }
                accepted = true;

                //add for cancel canceldroptarget handle
                if (LauncherAppState.isDisableAllApps() && dropTarget instanceof DeleteDropTarget &&
                        isNeedCancelDrag(mDragObject.dragInfo)) {
                    cancelDrag();
                }
            }
        }
        ...
}

private boolean isNeedCancelDrag(ItemInfo item){
        return (item.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION ||
                item.itemType == LauncherSettings.Favorites.ITEM_TYPE_FOLDER);
 }

7, the drawer pull page displayed on the screen gesture

vendor\mediatek\proprietary\packages\apps\Launcher3\quickstep\src\com\android\launcher3\uioverrides\OverviewToAllAppsTouchController.java

canInterceptTouch () determines whether the increased direct interception

@Override
    protected boolean canInterceptTouch(MotionEvent ev) {
        //add for forbidden workspace drag change GradientView alph
        if (LauncherAppState.isDisableAllApps()){
            android.util.Log.e("Launcher3", "canInterceptTouch()");
            return false;
        }  

        if (mCurrentAnimation != null) {
            // If we are already animating from a previous state, we can intercept.
            return true;
        }
        if (AbstractFloatingView.getTopOpenView(mLauncher) != null) {
            return false;
        }
        if (mLauncher.isInState(ALL_APPS)) {
            // In all-apps only listen if the container cannot scroll itself
            return mLauncher.getAppsView().shouldContainerScroll(ev);
        } else if (mLauncher.isInState(NORMAL)) {
            return true;
        } else if (mLauncher.isInState(OVERVIEW)) {
            RecentsView rv = mLauncher.getOverviewPanel();
            return ev.getY() > (rv.getBottom() - rv.getPaddingBottom());
        } else {
            return false;
        }
    }

8, to modify the page indication line dot

vendor\mediatek\proprietary\packages\apps\Launcher3\res\layout\launcher.xml

WorkspacePageIndicator changed PageIndicatorDots

<com.android.launcher3.pageindicators.PageIndicatorDots
            android:id="@+id/page_indicator"
            android:layout_width="match_parent"
            android:layout_height="4dp"
            android:layout_gravity="bottom|center_horizontal"
            android:theme="@style/HomeScreenElementTheme" />

vendor\mediatek\proprietary\packages\apps\Launcher3\src\com\android\launcher3\pageindicators\PageIndicatorDots.java

Increase PageIndicatorDots inheritance Insettable, replication setInsets (), adjust the position of the dots

public class PageIndicatorDots extends View implements PageIndicator, Insettable {

// add for change WorkspacePageIndicator line to dot
    @Override
    public void setInsets(Rect insets) {
        DeviceProfile grid = mLauncher.getDeviceProfile();
        FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) getLayoutParams();

        if (grid.isVerticalBarLayout()) {
            Rect padding = grid.workspacePadding;
            lp.leftMargin = padding.left + grid.workspaceCellPaddingXPx;
            lp.rightMargin = padding.right + grid.workspaceCellPaddingXPx;
            lp.bottomMargin = padding.bottom;
        } else {
            lp.leftMargin = lp.rightMargin = 0;
            lp.gravity = Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM;
            lp.bottomMargin = grid.hotseatBarSizePx + insets.bottom;
        }
        setLayoutParams(lp);
    }

    @Override
    public void setScroll(int currentScroll, int totalScroll) {
        if (mNumPages > 1) {
            if (mIsRtl) {
                currentScroll = totalScroll - currentScroll;
            }
            int scrollPerPage = totalScroll / (mNumPages - 1);

            // add for change WorkspacePageIndicator line to dot
            if (scrollPerPage == 0) {
                return;
            }
            int pageToLeft = currentScroll / scrollPerPage;
            int pageToLeftScroll = pageToLeft * scrollPerPage;
            int pageToRightScroll = pageToLeftScroll + scrollPerPage;

        ...

}

vendor\mediatek\proprietary\packages\apps\Launcher3\src\com\android\launcher3\states\SpringLoadedState.java

Notes setShouldAutoHide (), to avoid a crash occurs when long press workSpace

@Override
    public void onStateEnabled(Launcher launcher) {
        Workspace ws = launcher.getWorkspace();
        ws.showPageIndicatorAtCurrentScroll();
        //annotaion for WorkspacePageIndicator line to dot
        // ws.getPageIndicator().setShouldAutoHide(false);

        // Prevent any Un/InstallShortcutReceivers from updating the db while we are
        // in spring loaded mode
        InstallShortcutReceiver.enableInstallQueue(InstallShortcutReceiver.FLAG_DRAG_AND_DROP);
        launcher.getRotationHelper().setCurrentStateRequest(REQUEST_LOCK);
    }

    @Override
    public void onStateDisabled(final Launcher launcher) {
        //annotaion for WorkspacePageIndicator line to dot
        // launcher.getWorkspace().getPageIndicator().setShouldAutoHide(true);

        // Re-enable any Un/InstallShortcutReceiver and now process any queued items
        InstallShortcutReceiver.disableAndFlushInstallQueue(
                InstallShortcutReceiver.FLAG_DRAG_AND_DROP, launcher);
    }

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