Launcher3 安装App加载显示过程分析，androidstudio开发app实例
“Initializing LauncherAppState in the absence of LauncherProvider”);
}
Log.v(Launcher.TAG, “LauncherAppState initiated”);
Preconditions.assertUIThread();
mContext = context;
mInvariantDeviceProfile = new InvariantDeviceProfile(mContext);
mIconCache = new IconCache(mContext, mInvariantDeviceProfile);
mWidgetCache = new WidgetPreviewLoader(mContext, mIconCache);
mModel = new LauncherModel(this, mIconCache, AppFilter.newInstance(mContext));
//初始化接口
LauncherAppsCompat.getInstance(mContext).addOnAppsChangedCallback(mModel);
/**
- Call from Application.onTerminate(), which is not guaranteed to ever be called.
*/
public void onTerminate() {
mContext.unregisterReceiver(mModel);
final LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(mContext);
launcherApps.removeOnAppsChangedCallback(mModel);
PackageInstallerCompat.getInstance(mContext).onStop();
if (mNotificationBadgingObserver != null) {
mNotificationBadgingObserver.unregister();
}
}
- LauncherModel onPackageAdded 中调用的 enqueueModelUpdateTask 实现
public void enqueueModelUpdateTask(ModelUpdateTask task) {
task.init(mApp, this, sBgDataModel, mBgAllAppsList, mUiExecutor);
runOnWorkerThread(task);
}
/** Runs the specified runnable immediately if called from the worker thread, otherwise it is
- posted on the worker thread handler. */
private static void runOnWorkerThread(Runnable r) {
if (sWorkerThread.getThreadId() == Process.myTid()) {
r.run();
} else {
// If we are not on the worker thread, then post to the worker handler
sWorker.post®;
}
}
- 上面主要实现是 ModelUpdateTask 在工作线程进行任务处理
/**
- A runnable which changes/updates the data model of the launcher based on certain events.
*/
public interface ModelUpdateTask extends Runnable {
/**
- Called before the task is posted to initialize the internal state.
*/
void init(LauncherAppState app, LauncherModel model,
BgDataModel dataModel, AllAppsList allAppsList, Executor uiExecutor);
}
public abstract class BaseModelUpdateTask implements ModelUpdateTask {
PackageUpdatedTask 处理由于程序包管理器中的更改（应用程序安装、更新、删除）或用户可用性更改而引起的更新。
/**
-
Handles updates due to changes in package manager (app installed/updated/removed)
-
or when a user availability changes.
*/
public class PackageUpdatedTask extends BaseModelUpdateTask {
private static final boolean DEBUG = true;
private static final String TAG = “PackageUpdatedTask”;
public static final int OP_NONE = 0;
public static final int OP_ADD = 1;
public static final int OP_UPDATE = 2;
public static final int OP_REMOVE = 3; // uninstalled
public static final int OP_UNAVAILABLE = 4; // external media unmounted
public static final int OP_SUSPEND = 5; // package suspended
public static final int OP_UNSUSPEND = 6; // package unsuspended
public static final int OP_USER_AVAILABILITY_CHANGE = 7; // user available/unavailable
@Override
public void execute(LauncherAppState app, BgDataModel dataModel, AllAppsList appsList) {
final Context context = app.getContext();
final IconCache iconCache = app.getIconCache();
final String[] packages = mPackages;
final int N = packages.length;
FlagOp flagOp = FlagOp.NO_OP;
final HashSet packageSet = new HashSet<>(Arrays.asList(packages));
ItemInfoMatcher matcher = ItemInfoMatcher.ofPackages(packageSet, mUser);
switch (mOp) {
case OP_ADD: {
for (int i = 0; i < N; i++) {
if (DEBUG) Log.d(TAG, "mAllAppsList.addPackage " + packages[i]);
iconCache.updateIconsForPkg(packages[i], mUser);
if (FeatureFlags.LAUNCHER3_PROMISE_APPS_IN_ALL_APPS) {
appsList.removePackage(packages[i], Process.myUserHandle());
}
appsList.addPackage(context, packages[i], mUser);
// Automatically add homescreen icon for work profile apps for below O device.
if (!Utilities.ATLEAST_OREO && !Process.myUserHandle().equals(mUser)) {//del by mjf for receive package changed msg
SessionCommitReceiver.queueAppIconAddition(context, packages[i], mUser);
}
}
flagOp = FlagOp.removeFlag(ShortcutInfo.FLAG_DISABLED_NOT_AVAILABLE);
break;
}
…
final ArrayList addedOrModified = new ArrayList<>();
addedOrModified.addAll(appsList.added);
//add for load new install app on workspace start by lhw
if(FeatureFlags.DISABLE_ALL_APP){
ArrayList
final List profiles = UserManagerCompat.getInstance(context).getUserProfiles();
ArrayList
for (UserHandle user : profiles) {
final List apps = LauncherAppsCompat.getInstance(context).getActivityList(null, user);
synchronized (this) {
for (LauncherActivityInfo info : apps) {
if(DmConfig.isHiddenPackage(info.getComponentName())){continue;}//hide app by lhw
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);
}
}
//add for load new install app on workspace end by lhw
appsList.added.clear();
addedOrModified.addAll(appsList.modified);
appsList.modified.clear();
final ArrayList removedApps = new ArrayList<>(appsList.removed);
appsList.removed.clear();
final ArrayMap
if (!addedOrModified.isEmpty()) {
scheduleCallbackTask(new CallbackTask() {
@Override
public void execute(Callbacks callbacks) {
//TODO bindAppsAddedOrUpdated 通过AllAppsStore的addOrUpdateApps方法去通知AllApps界面刷新 LHW
callbacks.bindAppsAddedOrUpdated(addedOrModified);
}
});
for (AppInfo ai : addedOrModified) {
addedOrUpdatedApps.put(ai.componentName, ai);
}
}
- 通过execute 执行应用的添加 删除 更新操作
- iconCache.updateIconsForPkg 更新应用图标信息
/**
- Updates the entries related to the given package in memory and persistent DB.
*/
public synchronized void updateIconsForPkg(String packageName, UserHandle user) {
removeIconsForPkg(packageName, user);
try {
PackageInfo info = mPackageManager.getPackageInfo(packageName,
PackageManager.GET_UNINSTALLED_PACKAGES);
long userSerial = mUserManager.getSerialNumberForUser(user);
for (LauncherActivityInfo app : mLauncherApps.getActivityList(packageName, user)) {
addIconToDBAndMemCache(app, info, userSerial, false /replace existing/);
}
} catch (NameNotFoundException e) {
Log.d(TAG, “Package not found”, e);
}
}
- 通过appsList.addPackage方法将新应用信息缓存到AllAppsList
/**
- Add the icons for the supplied apk called packageName.
*/
public void addPackage(Context context, String packageName, UserHandle user) {
final LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(context);
final List matches = launcherApps.getActivityList(packageName,
user);
for (LauncherActivityInfo info : matches) {
add(new AppInfo(context, info, user), info);
}
}
/**
-
Add the supplied ApplicationInfo objects to the list, and enqueue it into the
-
list to broadcast when notify() is called.
-
If the app is already in the list, doesn’t add it.
*/
public void add(AppInfo info, LauncherActivityInfo activityInfo) {
if (!mAppFilter.shouldShowApp(info.componentName)) {
return;
}
if (findAppInfo(info.componentName, info.user) != null) {
return;
}
mIconCache.getTitleAndIcon(info, activityInfo, true /* useLowResIcon */);
data.add(info);
added.add(info);
}
- 通过bindAppsAddedOrUpdated方法回调launcher，进行界面更新的处理。
final ArrayMap
if (!addedOrModified.isEmpty()) {
scheduleCallbackTask(new CallbackTask() {
@Override
public void execute(Callbacks callbacks) {//TODO bindAppsAddedOrUpdated 通过AllAppsStore的addOrUpdateApps方法去通知AllApps界面刷新 LHW
callbacks.bindAppsAddedOrUpdated(addedOrModified);
}
});
for (AppInfo ai : addedOrModified) {
addedOrUpdatedApps.put(ai.componentName, ai);
}
}
4.Launcher.java 中通过AllAppsStore的addOrUpdateApps方法去通知AllApps界面刷新
/**
- Default launcher application.
*/
public class Launcher extends BaseDraggingActivity implements LauncherExterns,
LauncherModel.Callbacks, LauncherProviderChangeListener, UserEventDelegate{
public static final String TAG = “Launcher”;
/**
-
A package was updated.
-
Implementation of the meth
od from LauncherModel.Callbacks.
*/
@Override
public void bindAppsAddedOrUpdated(ArrayList apps) {
mAppsView.getAppsStore().addOrUpdateApps(apps);
}
5.在AllAppsStore中更新App 列表
/**
- A utility class to maintain the collection of all apps.
*/
public class AllAppsStore {
/**
- Adds or updates existing apps in the list
*/
public void addOrUpdateApps(List apps) {
for (AppInfo app : apps) {
Log.d(“LHW_L”,“addOrUpdateApps-==”+app.title+",=apps.size="+apps.size());
mComponentToAppMap.put(app.toComponentKey(), app);
}
notifyUpdate();
}
- AllAppsContainerView 获取 AllAppsStore 所有应用数据,通过all_apps_rv_layout.xml中AllAppsRecyclerView显示
/**
- The all apps view container.
*/
public class AllAppsContainerView extends SpringRelativeLayout implements DragSource,
Insettable, OnDeviceProfileChangeListener {
private final AllAppsStore mAllAppsStore = new AllAppsStore();
public AllAppsContainerView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
mLauncher = Launcher.getLauncher(context);
mLauncher.addOnDeviceProfileChangeListener(this);
mSearchQueryBuilder = new SpannableStringBuilder();
Selection.setSelection(mSearchQueryBuilder, 0);
mAH = new AdapterHolder[2];
mAH[AdapterHolder.MAIN] = new AdapterHolder(false /* isWork */);
mAH[AdapterHolder.WORK] = new AdapterHolder(true /* isWork */);
mNavBarScrimPaint = new Paint();
mNavBarScrimPaint.setColor(Themes.getAttrColor(context, R.attr.allAppsNavBarScrimColor));
mAllAppsStore.addUpdateListener(this::onAppsUpdated);
addSpringView(R.id.all_apps_header);
addSpringView(R.id.apps_list_view);
addSpringView(R.id.all_apps_tabs_view_pager);
}
- AllAppsContainerView中 AdapterHolder 的 AllAppsGridAdapter加载 显示所有App信息到视图
/**
- A RecyclerView with custom fast scroll support for the all apps view.
*/
public class AllAppsRecyclerView extends BaseRecyclerView implements LogContainerProvider {
public class AdapterHolder {
public static final int MAIN = 0;
public static final int WORK = 1;
public final AllAppsGridAdapter adapter;
final LinearLayoutManager layoutManager;
final AlphabeticalAppsList appsList;
final Rect padding = new Rect();
AllAppsRecyclerView recyclerView;
boolean verticalFadingEdge;
AdapterHolder(boolean isWork) {
appsList = new AlphabeticalAppsList(mLauncher, mAllAppsStore, isWork);
adapter = new AllAppsGridAdapter(mLauncher, appsList);
appsList.setAdapter(adapter);
layoutManager = adapter.getLayoutManager();
}
void setup(@NonNull View rv, @Nullable ItemInfoMatcher matcher) {
appsList.updateItemFilter(matcher);
recyclerView = (AllAppsRecyclerView) rv;
recyclerView.setEdgeEffectFactory(createEdgeEffectFactory());
recyclerView.setApps(appsList, mUsingTabs);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(adapter);
recyclerView.setHasFixedSize(true);
// No animations will occur when changes occur to the items in this RecyclerView.
recyclerView.setItemAnimator(null);
FocusedItemDecorator focusedItemDecorator = new FocusedItemDecorator(recyclerView);
recyclerView.addItemDecoration(focusedItemDecorator);
adapter.setIconFocusListener(focusedItemDecorator.getFocusListener());
applyVerticalFadingEdgeEnabled(verticalFadingEdge);
applyPadding();
}
- AllAppsGridAdapter 获取数据显示App 图标和信息
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
switch (viewType) {
case VIEW_TYPE_ICON:
BubbleTextView icon = (BubbleTextView) mLayoutInflater.inflate(
R.layout.all_apps_icon, parent, false);
icon.setOnClickListener(ItemClickHandler.INSTANCE);
icon.setOnLongClickListener(ItemLongClickListener.INSTANCE_ALL_APPS);
icon.setLongPressTimeout(ViewConfiguration.getLongPressTimeout());
icon.setOnFocusChangeListener(mIconFocusListener);
// Ensure the all apps icon height matches the workspace icons in portrait mode.
icon.getLayoutParams().height = mLauncher.getDeviceProfile().allAppsCellHeightPx;
return new ViewHolder(icon);
all_apps_icon.xml 中 BubbleTextView 显示桌面图标信息
xmlns:android=“http://schemas.android.com/apk/res/android” xmlns:launcher=“http://schemas.android.com/apk/res-auto” style="@style/BaseIcon" android:id="@+id/icon" android:layout_width=“match_parent” android:layout_height=“wrap_content” android:stateListAnimator="@animator/all_apps_fastscroll_icon_anim" launcher:iconDisplay=“all_apps” launcher:centerVertically=“true” android:paddingLeft="@dimen/dynamic_grid_cell_padding_x" android:paddingRight="@dimen/dynamic_grid_cell_padding_x" /> onBindViewHolder applyFromApplicationInfo 填充App信息数据 @Override public void onBindViewHolder(ViewHolder holder, int position) { switch (holder.getItemViewType()) { case VIEW_TYPE_ICON: AppInfo info = mApps.getAdapterItems().get(position).appInfo; BubbleTextView icon = (BubbleTextView) holder.itemView; icon.reset(); icon.applyFromApplicationInfo(info); break; Launcher 自定义 BubbleTextView 显示应用图标和信息 /** TextView that draws a bubble behind the text. We cannot use a LineBackgroundSpan because we want to make the bubble taller than the text and TextView’s clip is too aggressive. */ public class BubbleTextView extends TextView implements ItemInfoUpdateReceiver, OnResumeCallback { public void applyFromApplicationInfo(AppInfo info) { applyIconAndLabel(info); // We don’t need to check the info since it’s not a ShortcutInfo super.setTag(info); // Verify high res immediately verifyHighRes(); if (info instanceof PromiseAppInfo) { PromiseAppInfo promiseAppInfo = (PromiseAppInfo) info; applyProgressLevel(promiseAppInfo.level); } applyBadgeState(info, false /* animate */); } private void applyIconAndLabel(ItemInfoWithIcon info) { FastBitmapDrawable iconDrawable = DrawableFactory.get(getContext()).newIcon(info); mBadgeColor = IconPalette.getMutedColor(info.iconColor, 0.54f); setIcon(iconDrawable); setText(info.title); if (info.contentDescription != null) { setContentDescription(info.isDisabled() } } /** */ private void setIcon(Drawable icon) { if (mIsIconVisible) { applyCompoundDrawables(icon); } mIcon = icon; } protected void applyCompoundDrawables(Drawable icon) { // If we had already set an icon before, disable relayout as the icon size is the // same as before. mDisableRelayout = mIcon != null; icon.setBounds(0, 0, mIconSize, mIconSize); if (mLayoutHorizontal) { setCompoundDrawablesRelative(icon, null, null, null); } else { setCompoundDrawables(null, icon, null, null); } mDisableRelayout = false; } Launcher.java文件 在onCreate 通过 LauncherModel 的 startLoader 函数进行数据的绑定加载和更新 /** */ public class Launcher extends BaseDraggingActivity implements LauncherExterns, LauncherModel.Callbacks, LauncherProviderChangeListener, UserEventDelegate{ public static final String TAG = “Launcher”; static final boolean LOGD = false; @Override protected void onCreate(Bundle savedInstanceState) { TraceHelper.beginSection(“Launcher-onCreate”); super.onCreate(savedInstanceState); TraceHelper.partitionSection(“Launcher-onCreate”, “super call”); LauncherAppState app = LauncherAppState.getInstance(this); mOldConfig = new Configuration(getResources().getConfiguration()); //获取初始化 LauncherModel 进行广播监听数据绑定和更新加载 mModel = app.setLauncher(this); initDeviceProfile(app.getInvariantDeviceProfile()); // We only load the page synchronously if the user rotates (or triggers a // configuration change) while launcher is in the foreground int currentScreen = PagedView.INVALID_RESTORE_PAGE; if (savedInstanceState != null) { currentScreen = savedInstanceState.getInt(RUNTIME_STATE_CURRENT_SCREEN, currentScreen); } // LauncherModel startLoader 开启线程进行数据加载 if (!mModel.startLoader(currentScreen)) { if (!internalStateHandled) { // If we are not binding synchronously, show a fade in animation when // the first page bind completes. mDragLayer.getAlphaProperty(ALPHA_INDEX_LAUNCHER_LOAD).setValue(0); } } else { // Pages bound synchronously. mWorkspace.setCurrentPage(currentScreen); setWorkspaceLoading(true); } // For handling default keys setDefaultKeyMode(DEFAULT_KEYS_SEARCH_LOCAL); setContentView(mLauncherView); startLoader() 绑定和加载所用应用信息、小组件、快捷方式等到Workspace /** Maintains in-memory state of the Launcher. It is expected that there should be only one LauncherModel object held in a static. Also provide APIs for updating the database state for the Launcher. */ public class LauncherModel extends BroadcastReceiver implements LauncherAppsCompat.OnAppsChangedCallbackCompat { private static final boolean DEBUG_RECEIVER = !com.android.launcher3.Log.IS_USER_VERSON;//true; /** Starts the loader. Tries to bind {@params synchronousBindPage} synchronously if possible. @return true if the page could be bound synchronously. */ public boolean startLoader(int synchronousBindPage) { // Enable queue before starting loader. It will get disabled in Launcher#finishBindingItems InstallShortcutReceiver.enableInstallQueue(InstallShortcutReceiver.FLAG_LOADER_RUNNING); synchronized (mLock) { // Don’t bother to start the thread if we know it’s not going to do anything if (mCallbacks != null && mCallbacks.get() != null) { final Callbacks oldCallbacks = mCallbacks.get(); // Clear any pending bind-runnables from the synchronized load process. // begin modify by mjf for REQ006 //mUiExecutor.execute(oldCallbacks::clearPendingBinds); final Runnable runnable = new Runnable() { @Override public void run() { oldCallbacks.clearPendingBinds(); } }; mUiExecutor.execute(runnable); // end // If there is already one running, tell it to stop. stopLoader(); LoaderResults loaderResults = new LoaderResults(mApp, sBgDataModel, mBgAllAppsList, synchronousBindPage, mCallbacks); if (mModelLoaded && !mIsLoaderTaskRunning) { // Divide the set of loaded items into those that we are binding synchronously, // and everything else that is to be bound normally (asynchronously). loaderResults.bindWorkspace(); // For now, continue posting the binding of AllApps as there are other // issues that arise from that. loaderResults.bindAllApps(); loaderResults.bindDeepShortcuts(); loaderResults.bindWidgets(); return true; } else { startLoaderForResults(loaderResults); } } } return false; } public void startLoaderForResults(LoaderResults results) { synchronized (mLock) { stopLoader(); mLoaderTask = new LoaderTask(mApp, mBgAllAppsList, sBgDataModel, results); runOnWorkerThread(mLoaderTask); //mUiExecutor.execute(oldCallbacks::clearPendingBinds); final Runnable runnable = new Runnable() { @Override public void run() { oldCallbacks.clearPendingBinds(); } }; mUiExecutor.execute(runnable); // end // If there is already one running, tell it to stop. stopLoader(); LoaderResults loaderResults = new LoaderResults(mApp, sBgDataModel, mBgAllAppsList, synchronousBindPage, mCallbacks); if (mModelLoaded && !mIsLoaderTaskRunning) { // Divide the set of loaded items into those that we are binding synchronously, // and everything else that is to be bound normally (asynchronously). loaderResults.bindWorkspace(); // For now, continue posting the binding of AllApps as there are other // issues that arise from that. loaderResults.bindAllApps(); loaderResults.bindDeepShortcuts(); loaderResults.bindWidgets(); return true; } else { startLoaderForResults(loaderResults); } } } return false; } public void startLoaderForResults(LoaderResults results) { synchronized (mLock) { stopLoader(); mLoaderTask = new LoaderTask(mApp, mBgAllAppsList, sBgDataModel, results); runOnWorkerThread(mLoaderTask);
? getContext().getString(R.string.disabled_app_label, info.contentDescription)
Launcher 初始加载所有应用信息
LauncherModel 广播监听Launcher数据处理和接口回调