android P (9.0) Launcher3 去掉抽屉式,显示所有app

2023-09-14 11:35| 来源: 网络整理| 查看: 265

前言参考自以下博文,感谢博主 https://blog.csdn.net/qq_30552095/article/details/80494770 https://blog.csdn.net/illailla/article/details/80972830

先下载Launcher3,git clone 或者到googlesource 下载,或者其他地方下载 git clone https://android.googlesource.com/platform/packages/apps/Launcher3

git clone 需要翻墙遇到443问题的话设置下代理 git config --global http.proxy “localhost:1080”

下载后checkout branch到android 9.0 pie, 我check 的分支是pie-release-2 接下来就开始将Launcher3改成我们需要的样式了

Launcher3 改成抽屉式需要更改的内容 1.显示所有app在桌面上 2.去掉上划展开应用列表 3.长按拖动图标去掉删除改成取消卸载

显示所有app在桌面上要显示所有app在桌面上,也就是workspace上,首先是要先把所有应用加到桌面,然后要考虑安装后的应用显示到桌面先在src/com.android.launcher3.config.BaseFlags添加个boolean值

abstract class BaseFlags { BaseFlags() {} public static final boolean REMOVE_DRAWER = true; ...

1.显示所有应用应用加载在src/com.android.launcher3.model.LoaderTask 里在run里面添加方法加载所有应用

// second step TraceHelper.partitionSection(TAG, "step 2.1: loading all apps"); loadAllApps(); //add by yy if (FeatureFlags.REMOVE_DRAWER) { verifyApplications(); } //end add by yy TraceHelper.partitionSection(TAG, "step 2.2: Binding all apps"); verifyNotStopped(); mResults.bindAllApps(); //add by yy private void verifyApplications() { final Context context = mApp.getContext(); ArrayList installQueue = new ArrayList(); final List profiles = mUserManager.getUserProfiles(); for (UserHandle user : profiles) { final List apps = mLauncherApps.getActivityList(null, user); ArrayList added = new ArrayList(); 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); } } } //end add by yy

然后再修改src/com.android.launcher3.model.BaseModelUpdateTask,把return 给注释掉

@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. if(!FeatureFlags.REMOVE_DRAWER){ return; } } execute(mApp, mDataModel, mAllAppsList); }

这样应用就可以显示到桌面上了

2.应用安装后加载到桌面涉及到文件src/com.android.launcher3.model.PackageUpdatedTask

final ArrayList addedOrModified = new ArrayList(); addedOrModified.addAll(appsList.added); //add by yy if(FeatureFlags.REMOVE_DRAWER){ updateToWorkSpace(context, app, appsList); } //end add by yy appsList.added.clear(); addedOrModified.addAll(appsList.modified); appsList.modified.clear();

这样第一步就完成了

去掉上划展开应用列表这一个问题跟了好多个文件,先是从博文里提到的src/com.android.launcher3.allapps.AllAppsTransitionController 再到src/com.android.launcher3.LauncherStateManager/StateHandler 再到src/com.android.launcher3.LauncherStateManager 在AllAppsTransitionController里修改setState方法和setStateWithAnimation方法

public void setState(LauncherState state) { //2018.12.12 更新 setState方法可以不用管,不然会导致有动画效果没有 // if(FeatureFlags.REMOVE_DRAWER) // return; setProgress(state.getVerticalProgress(mLauncher)); setAlphas(state, NO_ANIM_PROPERTY_SETTER); onProgressAnimationEnd(); } @Override public void setStateWithAnimation(LauncherState toState, AnimatorSetBuilder builder, AnimationConfig config) { if(FeatureFlags.REMOVE_DRAWER) return; float targetProgress = toState.getVerticalProgress(mLauncher); if (Float.compare(mProgress, targetProgress) == 0) { setAlphas(toState, config.getPropertySetter(builder)); // Fail fast onProgressAnimationEnd(); return; }

这样可以实现上划去掉展开所有app,但是可以上划,上划后会隐藏掉所有的app 在这里插入图片描述

然后找到滑动的地方src/com.android.launcher3.touch.AbstractStateChangeTouchController 最后发现修改src_ui_overrides/com.android.launcher3.uioverrides.AllAppsSwipeController

@Override protected boolean canInterceptTouch(MotionEvent ev) { if (ev.getAction() == MotionEvent.ACTION_DOWN) { mTouchDownEvent = ev; } 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(NORMAL) && !mLauncher.isInState(ALL_APPS)) { // Don't listen for the swipe gesture if we are already in some other state. return false; } if (mLauncher.isInState(ALL_APPS) && !mLauncher.getAppsView().shouldContainerScroll(ev)) { return false; } //add by yy if(FeatureFlags.REMOVE_DRAWER){ return false; } //end add by yy return true; }

这样就上划不了了,但是这样会有什么其他影响暂时还没研究出来

长按拖动图标去掉删除改成取消卸载长按图标出现删除,卸载栏 src/com.android.launcher3.DropTargetBar 应用图标拖动的控制类 src/com.android.launcher3.dragndrop.DragController 删除,卸载类 src/com.android.launcher3.DeleteDropTarget src/com.android.launcher3.SecondaryDropTarget 拖动应用图标或者文件夹的时候我们需要把删除改成取消,并且拖到取消后桌面不能移除图标 1.应用图标或者文件夹拖动删除改成取消 src/com.android.launcher3.DeleteDropTarget

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); if(FeatureFlags.REMOVE_DRAWER){ mText = getResources().getString(isCanDrop(item) ? R.string.remove_drop_target_label : android.R.string.cancel); } requestLayout(); } }

mControlType 具体作用还不清楚,也一起改了

/** * Set mControlType depending on the drag item. */ private void setControlTypeBasedOnDragSource(ItemInfo item) { mControlType = item.id != ItemInfo.NO_ID ? ControlType.REMOVE_TARGET : ControlType.CANCEL_TARGET; if(FeatureFlags.REMOVE_DRAWER) { mControlType = isCanDrop(item) ? ControlType.REMOVE_TARGET : ControlType.CANCEL_TARGET; } }

2.删除操作改为取消操作 DragController是应用图标拖动的控制类 onDriverDragEnd是拖动结束后调用的地方,drop 是执行拖动后操作

@Override public void onDriverDragEnd(float x, float y) { DropTarget dropTarget; Runnable flingAnimation = mFlingToDeleteHelper.getFlingAnimation(mDragObject); if (flingAnimation != null) { dropTarget = mFlingToDeleteHelper.getDropTarget(); } else { dropTarget = findDropTarget((int) x, (int) y, mCoordinatesTemp); } drop(dropTarget, flingAnimation); endDrag(); }

在drop方法里对droptarget 判断如果是拖动到删除也就是DeleteDropTarget 就取消拖动

private void drop(DropTarget dropTarget, Runnable flingAnimation) { final int[] coordinates = mCoordinatesTemp; mDragObject.x = coordinates[0]; mDragObject.y = coordinates[1]; // Move dragging to the final target. if (dropTarget != mLastDropTarget) { if (mLastDropTarget != null) { mLastDropTarget.onDragExit(mDragObject); } mLastDropTarget = dropTarget; if (dropTarget != null) { dropTarget.onDragEnter(mDragObject); } } mDragObject.dragComplete = true; if (mIsInPreDrag) { if (dropTarget != null) { dropTarget.onDragExit(mDragObject); } return; } // Drop onto the target. 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 by yy //2018-11-30 16:05 修改 if (FeatureFlags.REMOVE_DRAWER && dropTarget instanceof DeleteDropTarget && isNeedCancelDrag(mDragObject.dragInfo)) { cancelDrag(); } //end add by yy } } final View dropTargetAsView = dropTarget instanceof View ? (View) dropTarget : null; mLauncher.getUserEventDispatcher().logDragNDrop(mDragObject, dropTargetAsView); dispatchDropComplete(dropTargetAsView, accepted); } private boolean isNeedCancelDrag(ItemInfo item){ return (item.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || item.itemType == LauncherSettings.Favorites.ITEM_TYPE_FOLDER); }

这样只完成了一步,看 dropTarget.onDrop(mDragObject, mOptions); 这里执行了drop操作. 看DeleteDropTarget 的父类src/com.android.launcher3.ButtonDropTarget

@Override public void onDrop(final DragObject d, final DragOptions options) { final DragLayer dragLayer = mLauncher.getDragLayer(); final Rect from = new Rect(); dragLayer.getViewRectRelativeToSelf(d.dragView, from); final Rect to = getIconRect(d); final float scale = (float) to.width() / from.width(); mDropTargetBar.deferOnDragEnd(); Runnable onAnimationEndRunnable = () -> { completeDrop(d); mDropTargetBar.onDragEnd(); mLauncher.getStateManager().goToState(NORMAL); }; dragLayer.animateView(d.dragView, from, to, scale, 1f, 1f, 0.1f, 0.1f, DRAG_VIEW_DROP_DURATION, Interpolators.DEACCEL_2, Interpolators.LINEAR, onAnimationEndRunnable, DragLayer.ANIMATION_END_DISAPPEAR, null); }

这里做了一个动画效果,动画完后就调用了onAnimationEndRunnable completeDrop 就是做对应的操作了,然后看DeleteDropTarget 的completeDrop 方法

@Override public void completeDrop(DragObject d) { ItemInfo item = d.dragInfo; if ((d.dragSource instanceof Workspace) || (d.dragSource instanceof Folder)) { onAccessibilityDrop(null, item); } } /** * Removes the item from the workspace. If the view is not null, it also removes the view. */ @Override 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 by yy ,cancel to remove app icon and folder if(!FeatureFlags.REMOVE_DRAWER || isCanDrop(item)) { mLauncher.removeItem(view, item, true /* deleteFromDb */); mLauncher.getWorkspace().stripEmptyScreens(); mLauncher.getDragLayer() .announceForAccessibility(getContext().getString(R.string.item_removed)); } // end add by yy } private boolean isCanDrop(ItemInfo item){ return !(item.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || item.itemType == LauncherSettings.Favorites.ITEM_TYPE_FOLDER); }

把删除应用图标操作去掉就好了,不让删除应用图标和文件夹

2018-12-03 12:00 更新应用列表会有个提示上拉的跳动小动画,在src/com.android.launcher3.Launcher 的onResume里,把它去掉就好了

@Override protected void onResume() { TraceHelper.beginSection("ON_RESUME"); super.onResume(); TraceHelper.partitionSection("ON_RESUME", "superCall"); mHandler.removeCallbacks(mLogOnDelayedResume); Utilities.postAsyncCallback(mHandler, mLogOnDelayedResume); setOnResumeCallback(null); // Process any items that were added while Launcher was away. InstallShortcutReceiver.disableAndFlushInstallQueue( InstallShortcutReceiver.FLAG_ACTIVITY_PAUSED, this); // Refresh shortcuts if the permission changed. mModel.refreshShortcutsIfRequired(); //Add by yy if(!FeatureFlags.REMOVE_DRAWER) DiscoveryBounce.showForHomeIfNeeded(this); //end add by yy if (mLauncherCallbacks != null) { mLauncherCallbacks.onResume(); } UiFactory.onLauncherStateOrResumeChanged(this); TraceHelper.endSection("ON_RESUME"); }

Launcher3 的Quickstep会调用DiscoveryBounce.showForOverviewIfNeeded 也会有all app跳动的动画所以我把DiscoveryBounce里的showForHomeIfNeeded 和 showForOverviewIfNeeded 都给注释掉了

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