eb4fea1a36
To let fragment's view lifecycle owner passed in to controllers. For UI usage, view lifecycle owner is the best choice, controller could use this lifecycle owner to observe events and do UI related works. Usage DataSaverController as first example. Bug: 287005021 Test: Manually for DataSaverController Change-Id: Id965ea3a24d61f4d0ec6735632944f41f72ba06a
88 lines
3.5 KiB
Kotlin
88 lines
3.5 KiB
Kotlin
/*
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* Copyright (C) 2017 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.specialaccess
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import android.content.Context
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import android.net.NetworkPolicyManager
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import android.os.UserHandle
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import androidx.lifecycle.Lifecycle
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import androidx.lifecycle.LifecycleOwner
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import androidx.lifecycle.lifecycleScope
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import androidx.lifecycle.repeatOnLifecycle
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import androidx.preference.Preference
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import androidx.preference.PreferenceScreen
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import com.android.settings.R
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import com.android.settings.core.BasePreferenceController
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import com.android.settingslib.spa.framework.util.formatString
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import com.android.settingslib.spaprivileged.model.app.AppListRepository
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import com.android.settingslib.spaprivileged.model.app.AppListRepositoryImpl
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import com.google.common.annotations.VisibleForTesting
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import kotlinx.coroutines.Dispatchers
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import kotlinx.coroutines.async
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import kotlinx.coroutines.coroutineScope
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import kotlinx.coroutines.launch
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import kotlinx.coroutines.withContext
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class DataSaverController(context: Context, key: String) : BasePreferenceController(context, key) {
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private lateinit var preference: Preference
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@AvailabilityStatus
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override fun getAvailabilityStatus(): Int = when {
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mContext.resources.getBoolean(R.bool.config_show_data_saver) -> AVAILABLE
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else -> UNSUPPORTED_ON_DEVICE
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}
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override fun displayPreference(screen: PreferenceScreen) {
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super.displayPreference(screen)
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preference = screen.findPreference(preferenceKey)!!
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}
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override fun onViewCreated(viewLifecycleOwner: LifecycleOwner) {
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viewLifecycleOwner.lifecycleScope.launch {
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viewLifecycleOwner.repeatOnLifecycle(Lifecycle.State.STARTED) {
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preference.summary = getUnrestrictedSummary(mContext)
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}
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}
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}
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companion object {
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@VisibleForTesting
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suspend fun getUnrestrictedSummary(
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context: Context,
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appListRepository: AppListRepository =
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AppListRepositoryImpl(context.applicationContext),
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) = context.formatString(
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R.string.data_saver_unrestricted_summary,
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"count" to getAllowCount(context.applicationContext, appListRepository),
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)
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private suspend fun getAllowCount(context: Context, appListRepository: AppListRepository) =
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withContext(Dispatchers.IO) {
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coroutineScope {
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val appsDeferred = async {
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appListRepository.loadAndFilterApps(
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userId = UserHandle.myUserId(),
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isSystemApp = false,
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)
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}
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val uidsAllowed = NetworkPolicyManager.from(context)
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.getUidsWithPolicy(NetworkPolicyManager.POLICY_ALLOW_METERED_BACKGROUND)
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appsDeferred.await().count { app -> app.uid in uidsAllowed }
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}
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}
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}
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} |