android 9.0 launcher3 去掉抽屉式显示所有 app(代码详解)

 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; }

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

/**  * 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;  }}

 //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());  } }

 <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" />

 <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"  />

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;  }  .....}

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();  ...}

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 workspaceprivate 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);   }  } }

@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); }

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 workspacepublic 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);  } }

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);}

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); }

vendor/mediatek/proprietary/packages/apps/Launcher3/quickstep/src/com/android/launcher3

canInterceptTouch() 中增加判断是否直接拦截@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;  } }

<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

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;  ...}

@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); }