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Commit cfefeb72 authored by Yuncheol Heo's avatar Yuncheol Heo
Browse files

Configure the number of tasks to scan to determine Home visibility. 

- Auto uses the multi display and its Home uses TaskView, so it's not enough to peek the top Tasks to get the visibility of Home.
- Set the default number of tasks to retrieve as 10 to scan all visible tasks.
- Don't query PM to check if the task is Home, check the ActivityType instead.

Bug: 236099098
Test: atest android.app.cts.ActivityManagerTest#testHomeVisibilityListener

Change-Id: I10b6d84292d3180f095dd9f8cf76b4c9db641091
parent 5c8fd0dd

core/java/android/app/ActivityManager.java

+1 −1
Original line number Diff line number Diff line
@@ -5124,7 +5124,7 @@ public class ActivityManager { 
        Preconditions.checkNotNull(listener);

        Preconditions.checkNotNull(executor);

        try {

            listener.init(mContext, executor, this);

            listener.init(mContext, executor);

            getService().registerProcessObserver(listener.mObserver);

            // Notify upon first registration.

            executor.execute(() ->

core/java/android/app/HomeVisibilityListener.java

+23 −22
Original line number Diff line number Diff line
@@ -16,16 +16,17 @@ 


package android.app;



import static android.app.WindowConfiguration.ACTIVITY_TYPE_HOME;

import static android.content.Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS;

import static android.view.Display.DEFAULT_DISPLAY;



import android.annotation.SuppressLint;

import android.annotation.SystemApi;

import android.annotation.TestApi;

import android.content.ComponentName;

import android.content.Context;

import android.os.Binder;



import java.util.ArrayList;

import java.util.List;

import java.util.Objects;

import java.util.concurrent.Executor;



/**
@@ -39,20 +40,21 @@ import java.util.concurrent.Executor; 
@SystemApi(client = SystemApi.Client.MODULE_LIBRARIES)

@TestApi

public abstract class HomeVisibilityListener {

    private Context mContext;

    private ActivityManager mActivityManager;

    private ActivityTaskManager mActivityTaskManager;

    private Executor mExecutor;

    private int mMaxScanTasksForHomeVisibility;

    /** @hide */

    android.app.IProcessObserver.Stub mObserver;

    /** @hide */

    boolean mIsHomeActivityVisible;



    /** @hide */

    void init(Context context, Executor executor, ActivityManager activityManager) {

        mContext = context;

        mActivityManager = activityManager;

        mIsHomeActivityVisible = isHomeActivityVisible();

    void init(Context context, Executor executor) {

        mActivityTaskManager = ActivityTaskManager.getInstance();

        mExecutor = executor;

        mMaxScanTasksForHomeVisibility = context.getResources().getInteger(

                com.android.internal.R.integer.config_maxScanTasksForHomeVisibility);

        mIsHomeActivityVisible = isHomeActivityVisible();

    }



    /**
@@ -91,22 +93,21 @@ public abstract class HomeVisibilityListener { 
    }



    private boolean isHomeActivityVisible() {

        List<ActivityManager.RunningTaskInfo> tasks = mActivityManager.getRunningTasks(1);

        if (tasks == null || tasks.isEmpty()) {

        List<ActivityManager.RunningTaskInfo> tasksTopToBottom = mActivityTaskManager.getTasks(

                mMaxScanTasksForHomeVisibility, /* filterOnlyVisibleRecents= */ true,

                /* keepIntentExtra= */ false, DEFAULT_DISPLAY);

        if (tasksTopToBottom == null || tasksTopToBottom.isEmpty()) {

            return false;

        }



        String top = tasks.get(0).topActivity.getPackageName();

        if (top == null) {

            return false;

        for (int i = 0, taskSize = tasksTopToBottom.size(); i < taskSize; ++i) {

            ActivityManager.RunningTaskInfo task = tasksTopToBottom.get(i);

            if (!task.isVisible()

                    || (task.baseIntent.getFlags() & FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) != 0) {

                continue;

            }



        // We can assume that the screen is idle if the home application is in the foreground.

        ComponentName defaultHomeComponent = mContext.getPackageManager()

                .getHomeActivities(new ArrayList<>());

        if (defaultHomeComponent == null) return false;



        String defaultHomePackage = defaultHomeComponent.getPackageName();

        return Objects.equals(top, defaultHomePackage);

            return task.getActivityType() == ACTIVITY_TYPE_HOME;

        }

        return false;

    }

}

core/res/res/values/config.xml

+3 −0
Original line number Diff line number Diff line
@@ -5872,4 +5872,7 @@ 


    <!-- Whether the wake screen on notifications feature is available. -->

    <bool name="config_pulseOnNotificationsAvailable">true</bool>



    <!-- The number of tasks to scan to get the visibility of Home -->

    <integer name="config_maxScanTasksForHomeVisibility">10</integer>

</resources>

core/res/res/values/symbols.xml

+2 −0
Original line number Diff line number Diff line
@@ -3976,6 +3976,8 @@ 


  <java-symbol type="string" name="config_customCountryDetector" />



  <java-symbol type="integer" name="config_maxScanTasksForHomeVisibility" />



  <!-- For Foldables -->

  <java-symbol type="array" name="config_foldedDeviceStates" />

  <java-symbol type="array" name="config_deviceStatesOnWhichToWakeUp" />