138 lines
5.1 KiB
Java
138 lines
5.1 KiB
Java
/*
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* Copyright (C) 2015 The Android Open Source 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 com.android.settings.applications;
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import com.android.internal.util.ArrayUtils;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.pm.ApplicationInfo;
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import android.content.pm.PackageInfo;
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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.AsyncTask;
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import android.preference.ListPreference;
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import android.provider.Settings;
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import android.telephony.TelephonyManager;
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import android.text.TextUtils;
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import android.util.ArrayMap;
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import android.util.AttributeSet;
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import java.util.List;
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import java.util.Objects;
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/**
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* A preference for choosing the default emergency app
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*/
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public class DefaultEmergencyPreference extends ListPreference {
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private final ContentResolver mContentResolver;
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public DefaultEmergencyPreference(Context context, AttributeSet attrs) {
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super(context, attrs);
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mContentResolver = context.getContentResolver();
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load();
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}
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@Override
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protected boolean persistString(String value) {
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String previousValue = Settings.Secure.getString(mContentResolver,
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Settings.Secure.EMERGENCY_ASSISTANCE_APPLICATION);
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if (!TextUtils.isEmpty(value) && !Objects.equals(value, previousValue)) {
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Settings.Secure.putString(mContentResolver,
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Settings.Secure.EMERGENCY_ASSISTANCE_APPLICATION,
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value);
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}
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setSummary(getEntry());
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return true;
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}
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private void load() {
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new AsyncTask<Void, Void, ArrayMap<String, CharSequence>>() {
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@Override
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protected ArrayMap<String, CharSequence> doInBackground(Void[] params) {
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return resolveAssistPackageAndQueryApps();
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}
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@Override
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protected void onPostExecute(ArrayMap<String, CharSequence> entries) {
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setEntries(entries.values().toArray(new CharSequence[entries.size()]));
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setEntryValues(entries.keySet().toArray(new String[entries.size()]));
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setValue(Settings.Secure.getString(mContentResolver,
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Settings.Secure.EMERGENCY_ASSISTANCE_APPLICATION));
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}
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}.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
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}
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private ArrayMap<String, CharSequence> resolveAssistPackageAndQueryApps() {
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ArrayMap<String, CharSequence> packages = new ArrayMap<>();
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Intent queryIntent = new Intent(TelephonyManager.ACTION_EMERGENCY_ASSISTANCE);
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PackageManager packageManager = getContext().getPackageManager();
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List<ResolveInfo> infos = packageManager.queryIntentActivities(queryIntent, 0);
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PackageInfo bestMatch = null;
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for (int i = 0; i < infos.size(); i++) {
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if (infos.get(i) == null || infos.get(i).activityInfo == null
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|| packages.containsKey(infos.get(i).activityInfo.packageName)) {
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continue;
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}
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String packageName = infos.get(i).activityInfo.packageName;
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CharSequence label = infos.get(i).activityInfo.applicationInfo
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.loadLabel(packageManager);
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packages.put(packageName, label);
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PackageInfo packageInfo;
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try {
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packageInfo = packageManager.getPackageInfo(packageName, 0);
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} catch (PackageManager.NameNotFoundException e) {
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continue;
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}
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// Get earliest installed app, but prioritize system apps.
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if (bestMatch == null
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|| !isSystemApp(bestMatch) && isSystemApp(packageInfo)
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|| isSystemApp(bestMatch) == isSystemApp(packageInfo)
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&& bestMatch.firstInstallTime > packageInfo.firstInstallTime) {
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bestMatch = packageInfo;
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}
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}
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String defaultPackage = Settings.Secure.getString(mContentResolver,
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Settings.Secure.EMERGENCY_ASSISTANCE_APPLICATION);
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boolean defaultMissing = TextUtils.isEmpty(defaultPackage)
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|| !packages.containsKey(defaultPackage);
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if (bestMatch != null && defaultMissing) {
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Settings.Secure.putString(mContentResolver,
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Settings.Secure.EMERGENCY_ASSISTANCE_APPLICATION,
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bestMatch.packageName);
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}
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return packages;
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}
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private static boolean isSystemApp(PackageInfo info) {
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return info.applicationInfo != null
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&& (info.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0;
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}
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}
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