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<ComponentName, AppInfo> addedOrUpdatedApps = new 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<ComponentName, AppInfo> addedOrUpdatedApps = new 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 method 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);
<com.android.launcher3.BubbleTextView
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" />
@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;
/**
-
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()
-
? getContext().getString(R.string.disabled_app_label, info.contentDescription)
- info.contentDescription);
}
}
/**
- Sets the icon for this view based on the layout direction.
*/
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 初始加载所有应用信息
/**
- Default launcher application.
*/
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);
LauncherModel 广播监听Launcher数据处理和接口回调
/**
-
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;
}
- startLoaderForResults() 开始加载和返回数据结果
public void startLoaderForResults(LoaderResults results) {
synchronized (mLock) {
stopLoader();
mLoaderTask = new LoaderTask(mApp, mBgAllAppsList, sBgDataModel, results);
runOnWorkerThread(mLoaderTask);
onPackageChanged(DmConfig.mCalenderPkgName, android.os.Process.myUserHandle()); /* add by mjf for HCT_CUSTOM_CALENDAR */
}
}
public void startLoaderForResultsIfNotLoaded(LoaderResults results) {
synchronized (mLock) {
if (!isModelLoaded()) {
Log.d(TAG, “Workspace not loaded, loading now”);
startLoaderForResults(results);
}
}
}
- LoaderTask.java 启动线程去处理桌面数据显示信息，所有桌面图标、组件、文件夹等信息
/**
-
Runnable for the thread that loads the contents of the launcher:
-
- workspace icons
-
- widgets
-
- all apps icons
-
- deep shortcuts within apps
*/
public class LoaderTask implements Runnable {
private static final String TAG = “LoaderTask”;
public LoaderTask(LauncherAppState app, AllAppsList bgAllAppsList, BgDataModel dataModel,
LoaderResults results) {
mApp = app;
mBgAllAppsList = bgAllAppsList;
mBgDataModel = dataModel;
学习福利
【Android 详细知识点思维脑图（技能树）】
其实Android开发的知识点就那么多，面试问来问去还是那么点东西。所以面试没有其他的诀窍，只看你对这些知识点准备的充分程度。so，出去面试时先看看自己复习到了哪个阶段就好。
虽然 Android 没有前几年火热了，已经过去了会四大组件就能找到高薪职位的时代了。这只能说明 Android 中级以下的岗位饱和了，现在高级工程师还是比较缺少的，很多高级职位给的薪资真的特别高（钱多也不一定能找到合适的），所以努力让自己成为高级工程师才是最重要的。
由于篇幅有限，这里以图片的形式给大家展示一小部分。
详细整理在GitHub点击可见；
Android架构视频+BAT面试专题PDF+学习笔记
网上学习 Android的资料一大堆，但如果学到的知识不成体系，遇到问题时只是浅尝辄止，不再深入研究，那么很难做到真正的技术提升。希望这份系统化的技术体系对大家有一个方向参考。
ivate static final String TAG = “LoaderTask”;
public LoaderTask(LauncherAppState app, AllAppsList bgAllAppsList, BgDataModel dataModel,
LoaderResults results) {
mApp = app;
mBgAllAppsList = bgAllAppsList;
mBgDataModel = dataModel;
学习福利
【Android 详细知识点思维脑图（技能树）】
其实Android开发的知识点就那么多，面试问来问去还是那么点东西。所以面试没有其他的诀窍，只看你对这些知识点准备的充分程度。so，出去面试时先看看自己复习到了哪个阶段就好。
虽然 Android 没有前几年火热了，已经过去了会四大组件就能找到高薪职位的时代了。这只能说明 Android 中级以下的岗位饱和了，现在高级工程师还是比较缺少的，很多高级职位给的薪资真的特别高（钱多也不一定能找到合适的），所以努力让自己成为高级工程师才是最重要的。
由于篇幅有限，这里以图片的形式给大家展示一小部分。
[外链图片转存中…(img-M1AHQvPD-1645107954510)]
详细整理在GitHub点击可见；
Android架构视频+BAT面试专题PDF+学习笔记
网上学习 Android的资料一大堆，但如果学到的知识不成体系，遇到问题时只是浅尝辄止，不再深入研究，那么很难做到真正的技术提升。希望这份系统化的技术体系对大家有一个方向参考。
