109 lines
4.1 KiB
Java
109 lines
4.1 KiB
Java
/*
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* Copyright (C) 2018-2020 The LineageOS Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.lineageos.internal.util;
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import android.app.ActivityManager;
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import android.app.ActivityManagerNative;
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import android.app.ActivityOptions;
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import android.app.IActivityManager;
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import android.content.Context;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.content.pm.ResolveInfo;
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import android.os.RemoteException;
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import android.util.Log;
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import java.util.List;
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public class ActionUtils {
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private static final boolean DEBUG = false;
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private static final String TAG = ActionUtils.class.getSimpleName();
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private static final String SYSTEMUI_PACKAGE = "com.android.systemui";
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/**
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* Attempt to bring up the last activity in the stack before the current active one.
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*
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* @param context
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* @return whether an activity was found to switch to
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*/
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public static boolean switchToLastApp(Context context, int userId) {
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try {
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return switchToLastAppInternal(context, userId);
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} catch (RemoteException e) {
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Log.e(TAG, "Could not switch to last app");
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}
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return false;
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}
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private static boolean switchToLastAppInternal(Context context, int userId)
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throws RemoteException {
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ActivityManager.RecentTaskInfo lastTask = getLastTask(context, userId);
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if (lastTask == null || lastTask.id < 0) {
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return false;
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}
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final String packageName = lastTask.baseIntent.getComponent().getPackageName();
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final IActivityManager am = ActivityManagerNative.getDefault();
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final ActivityOptions opts = ActivityOptions.makeCustomAnimation(context,
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org.lineageos.platform.internal.R.anim.last_app_in,
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org.lineageos.platform.internal.R.anim.last_app_out);
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if (DEBUG) Log.d(TAG, "switching to " + packageName);
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am.moveTaskToFront(null, null, lastTask.id,
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ActivityManager.MOVE_TASK_NO_USER_ACTION, opts.toBundle());
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return true;
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}
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private static ActivityManager.RecentTaskInfo getLastTask(Context context, int userId)
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throws RemoteException {
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final String defaultHomePackage = resolveCurrentLauncherPackage(context, userId);
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final IActivityManager am = ActivityManager.getService();
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final List<ActivityManager.RecentTaskInfo> tasks = am.getRecentTasks(5,
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ActivityManager.RECENT_IGNORE_UNAVAILABLE, userId).getList();
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for (int i = 1; i < tasks.size(); i++) {
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ActivityManager.RecentTaskInfo task = tasks.get(i);
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if (task.origActivity != null) {
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task.baseIntent.setComponent(task.origActivity);
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}
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String packageName = task.baseIntent.getComponent().getPackageName();
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if (!packageName.equals(defaultHomePackage)
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&& !packageName.equals(SYSTEMUI_PACKAGE)) {
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return task;
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}
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}
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return null;
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}
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private static String resolveCurrentLauncherPackage(Context context, int userId) {
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final Intent launcherIntent = new Intent(Intent.ACTION_MAIN)
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.addCategory(Intent.CATEGORY_HOME);
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final PackageManager pm = context.getPackageManager();
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final ResolveInfo launcherInfo = pm.resolveActivityAsUser(launcherIntent, 0, userId);
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if (launcherInfo.activityInfo != null &&
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!launcherInfo.activityInfo.packageName.equals("android")) {
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return launcherInfo.activityInfo.packageName;
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}
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return null;
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}
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}
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