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Commit f325f87e authored by Roman Birg's avatar Roman Birg Committed by Adnan Begovic
Browse files

frameworks: allow last app action to be assigned to hardware keys 



Also fix multi-user handling for 'switch to last app' and 'kill
foreground app' actions.

Change-Id: I1fb586d19b1198e6888b0f11e0a2813acf0bcd5b
Signed-off-by: default avatarRoman Birg <roman@cyngn.com>
Signed-off-by: default avatarDanny Baumann <dannybaumann@web.de>
Signed-off-by: default avatarAdnan Begovic <adnan@cyngn.com>
parent d9ad9aff

core/java/android/provider/Settings.java

+2 −1
Original line number Diff line number Diff line
@@ -3016,7 +3016,8 @@ public final class Settings { 
         * 4 - Voice search

         * 5 - In-app search

         * 6 - Launch Camera

         * 7 - Last app

         * 7 - Action Sleep

         * 8 - Last app

         * @hide

         */

        public static final String KEY_HOME_LONG_PRESS_ACTION = "key_home_long_press_action";

core/java/com/android/internal/util/cm/ActionUtils.java

0 → 100644
+149 −0
Original line number Diff line number Diff line 
package com.android.internal.util.cm;



import android.app.ActivityManager;

import android.app.ActivityManagerNative;

import android.app.ActivityOptions;

import android.app.IActivityManager;

import android.content.Context;

import android.content.Intent;

import android.content.pm.PackageManager;

import android.content.pm.ResolveInfo;

import android.os.Process;

import android.os.RemoteException;

import android.os.UserHandle;

import android.util.Log;



import android.view.HapticFeedbackConstants;

import android.widget.Toast;

import com.android.internal.R;



import java.util.List;



public class ActionUtils {

    private static final boolean DEBUG = false;

    private static final String TAG = ActionUtils.class.getSimpleName();

    private static final String SYSTEMUI_PACKAGE = "com.android.systemui";



    /**

     * Kills the top most / most recent user application, but leaves out the launcher.

     * This is function governed by {@link Settings.Secure.KILL_APP_LONGPRESS_BACK}.

     *

     * @param context the current context, used to retrieve the package manager.

     * @param userId the ID of the currently active user

     * @return {@code true} when a user application was found and closed.

     */

    public static boolean killForegroundApp(Context context, int userId) {

        try {

            return killForegroundAppInternal(context, userId);

        } catch (RemoteException e) {

            Log.e(TAG, "Could not kill foreground app");

        }

        return false;

    }



    private static boolean killForegroundAppInternal(Context context, int userId)

            throws RemoteException {

        try {

            final Intent intent = new Intent(Intent.ACTION_MAIN);

            String defaultHomePackage = "com.android.launcher";

            intent.addCategory(Intent.CATEGORY_HOME);

            final ResolveInfo res = context.getPackageManager().resolveActivity(intent, 0);



            if (res.activityInfo != null && !res.activityInfo.packageName.equals("android")) {

                defaultHomePackage = res.activityInfo.packageName;

            }



            IActivityManager am = ActivityManagerNative.getDefault();

            List<ActivityManager.RunningAppProcessInfo> apps = am.getRunningAppProcesses();

            for (ActivityManager.RunningAppProcessInfo appInfo : apps) {

                int uid = appInfo.uid;

                // Make sure it's a foreground user application (not system,

                // root, phone, etc.)

                if (uid >= Process.FIRST_APPLICATION_UID && uid <= Process.LAST_APPLICATION_UID

                        && appInfo.importance ==

                        ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {

                    if (appInfo.pkgList != null && (appInfo.pkgList.length > 0)) {

                        for (String pkg : appInfo.pkgList) {

                            if (!pkg.equals("com.android.systemui")

                                    && !pkg.equals(defaultHomePackage)) {

                                am.forceStopPackage(pkg, UserHandle.USER_CURRENT);

                                return true;

                            }

                        }

                    } else {

                        Process.killProcess(appInfo.pid);

                        return true;

                    }

                }

            }

        } catch (RemoteException remoteException) {

            // Do nothing; just let it go.

        }

        return false;

    }



    /**

     * Attempt to bring up the last activity in the stack before the current active one.

     *

     * @param context

     * @return whether an activity was found to switch to

     */

    public static boolean switchToLastApp(Context context, int userId) {

        try {

            return switchToLastAppInternal(context, userId);

        } catch (RemoteException e) {

            Log.e(TAG, "Could not switch to last app");

        }

        return false;

    }



    private static boolean switchToLastAppInternal(Context context, int userId)

            throws RemoteException {

        ActivityManager.RecentTaskInfo lastTask = getLastTask(context, userId);



        if (lastTask == null || lastTask.id < 0) {

            return false;

        }



        final String packageName = lastTask.baseIntent.getComponent().getPackageName();

        final IActivityManager am = ActivityManagerNative.getDefault();

        final ActivityOptions opts = ActivityOptions.makeCustomAnimation(context,

                com.android.internal.R.anim.last_app_in,

                com.android.internal.R.anim.last_app_out);



        if (DEBUG) Log.d(TAG, "switching to " + packageName);

        am.moveTaskToFront(lastTask.id, ActivityManager.MOVE_TASK_NO_USER_ACTION, opts.toBundle());



        return true;

    }



    private static ActivityManager.RecentTaskInfo getLastTask(Context context, int userId)

            throws RemoteException {

        final String defaultHomePackage = resolveCurrentLauncherPackage(context, userId);

        final IActivityManager am = ActivityManagerNative.getDefault();

        final List<ActivityManager.RecentTaskInfo> tasks = am.getRecentTasks(5,

                ActivityManager.RECENT_IGNORE_UNAVAILABLE, userId);



        for (int i = 1; i < tasks.size(); i++) {

            ActivityManager.RecentTaskInfo task = tasks.get(i);

            if (task.origActivity != null) {

                task.baseIntent.setComponent(task.origActivity);

            }

            String packageName = task.baseIntent.getComponent().getPackageName();

            if (!packageName.equals(defaultHomePackage)

                    && !packageName.equals(SYSTEMUI_PACKAGE)) {

                return tasks.get(i);

            }

        }



        return null;

    }



    private static String resolveCurrentLauncherPackage(Context context, int userId) {

        final Intent launcherIntent = new Intent(Intent.ACTION_MAIN)

                .addCategory(Intent.CATEGORY_HOME);

        final PackageManager pm = context.getPackageManager();

        final ResolveInfo launcherInfo = pm.resolveActivityAsUser(launcherIntent, 0, userId);

        return launcherInfo.activityInfo.packageName;

    }

}

core/res/res/values/symbols.xml

+4 −0
Original line number Diff line number Diff line
@@ -2231,4 +2231,8 @@ 
  <!-- Package Manager -->

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



  <!-- Last app switch animations -->

  <java-symbol type="anim" name="last_app_in" />

  <java-symbol type="anim" name="last_app_out" />



</resources>