Profile User用户创建成功后，只会在桌面显示寥寥几个应用的图标，而不是所有系统应用；在原生的系统上，profile user创建成功后，会在桌面显示两个profile user应用的图标
场景一：Profile User初次创建成功后，桌面图标显示##
以下以电子邮件应用为例，看下创建Profile user用户后，桌面图标显示的场景
Profile_user_icon
以下调用栈，表示，在Profile User启动后，该应用监听监听了ACTION_BOOT_COMPLETED广播，然后调用setComponentEnabledSetting去启用某些组件
- 调用栈信息
03-07 07:21:06.626 4982 5168 D user : java.lang.Throwable
03-07 07:21:06.626 4982 5168 D user : at android.app.ApplicationPackageManager.setComponentEnabledSetting(ApplicationPackageManager.java:2326)
03-07 07:21:06.626 4982 5168 D user : at com.android.email.service.EmailServiceUtils.setComponentStatus(EmailServiceUtils.java:793)
03-07 07:21:06.626 4982 5168 D user : at com.android.email.service.EmailServiceUtils.enableExchangeComponent(EmailServiceUtils.java:812)
03-07 07:21:06.626 4982 5168 D user : at com.android.email.provider.AccountReconciler.reconcileAccountsInternal(AccountReconciler.java:211)
03-07 07:21:06.626 4982 5168 D user : at com.android.email.provider.AccountReconciler.reconcileAccounts(AccountReconciler.java:146)
03-07 07:21:06.626 4982 5168 D user : at com.android.email.service.EmailBroadcastProcessorService.reconcileAndStartServices(EmailBroadcastProcessorService.java:371)
03-07 07:21:06.626 4982 5168 D user : at com.android.email.service.EmailBroadcastProcessorService.onBootCompleted(EmailBroadcastProcessorService.java:352)
03-07 07:21:06.626 4982 5168 D user : at com.android.email.service.EmailBroadcastProcessorService.onHandleIntent(EmailBroadcastProcessorService.java:159)
03-07 07:21:06.626 4982 5168 D user : at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:76)
03-07 07:21:06.626 4982 5168 D user : at android.os.Handler.dispatchMessage(Handler.java:106)
03-07 07:21:06.626 4982 5168 D user : at android.os.Looper.loop(Looper.java:193)
03-07 07:21:06.626 4982 5168 D user : at android.os.HandlerThread.run(HandlerThread.java:65)
-
enableExchangeComponent
public static void enableExchangeComponent(final Context context) { if (VendorPolicyLoader.getInstance(context).useAlternateExchangeStrings()) { LogUtils.d(LogUtils.TAG, "Enabling alternate EAS authenticator"); setComponentStatus(context, EasAuthenticatorServiceAlternate.class, true); setComponentStatus(context, EasAuthenticatorService.class, false); } else { LogUtils.d(LogUtils.TAG, "Enabling EAS authenticator"); setComponentStatus(context, EasAuthenticatorService.class, true); setComponentStatus(context, EasAuthenticatorServiceAlternate.class, false); } }@Override public void setComponentEnabledSetting(ComponentName componentName,int newState, int flags) { try { mPM.setComponentEnabledSetting(componentName, newState, flags, mContext.getUserId());//传递当前应用进程所在的userid，到pms } catch (RemoteException e) { throw e.rethrowFromSystemServer(); } }
从广播发送到桌面去更新桌面图标的流程如下：
禁用或者使能组件流程
流程描述如下：
Profile User创建成功后，发送ACTION_BOOT_COMPLETED广播
电子邮件应用，接收ACTION_BOOT_COMPLETED广播，调用PMS#setComponentEnabledSetting去使能相关组件服务
PMS处理相关逻辑，使能相关组件服务后，发送ACTION_PACKAGE_CHANGED广播，回调IOnAppsChangeListener的onPacakgeChange方法
-
因为桌面注册了IOnAppsChangeListener监听，因此能够监听到改pacakgeChange变化，更新对应用户的桌面图标变化
桌面使用的注册监听的接口
LauncherApps.java public void registerCallback(Callback callback, Handler handler) { synchronized (this) { if (callback != null && findCallbackLocked(callback) < 0) { boolean addedFirstCallback = mCallbacks.size() == 0; addCallbackLocked(callback, handler); if (addedFirstCallback) { try { mService.addOnAppsChangedListener(mContext.getPackageName(), mAppsChangedListener); } catch (RemoteException re) { throw re.rethrowFromSystemServer(); } } } } }
