Android P 屏保和休眠相关知识

2024-01-26 15:36
文章标签 android 知识 相关 休眠 屏保

本文主要是介绍Android P 屏保和休眠相关知识，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

Android P添加屏保功能，如果休眠时间设定大于屏保时间，则先进入屏保，达到休眠时间后再进入休眠

需求：

  1. 添加屏幕互保开关，默认关闭。
  2. 只保留时钟，可设定指针和数字、夜间模式。
  3. 启用时间改多长时间无操作进入屏保，可设定1、5、10、15、30分钟。
  4. 如果休眠时间设定小于屏保时间，则优先进入休眠，如果休眠时间设定大于屏保时间，则先进入屏保，达到休眠时间后再进入休眠

修改后的屏保：

 

 分析与实现：

1.修改进入屏保的条件

由于Android原生系统默认进入屏保的条件是充电或插入基座时，但到达休眠时才进入屏保。所以需要把进入屏保的条件修改为任何时候都能进入。

frameworks\base\core\res\res\values\config.xml
把"config_dreamsEnabledOnBattery"修改为true即实现任何时候都能进入屏保<!-- Are we allowed to dream while not plugged in? --><bool name="config_dreamsEnabledOnBattery">true</bool>

2.在设置–>显示–>屏保中添加“屏幕互保”选项开关

2.1添加系统自定义全局变量，用来保存“屏幕互保”选项开关的状态值

frameworks/base/core/java/android/provider/Settings.java+        /** @hide */
+        public static final String SCREENSAVER_SWITCH= "seewo.screensavers.switch";
public static final class Secure extends NameValueTable {
/** @hide */
public static final String SCREENSAVER_TIMEOUT= “seewo.screensavers.timeout”;

2.2 vendor/mediatek/proprietary/packages/apps/MtkSettings/res/values-zh-rCN/strings.xml

<string name="screensaver_switch_title">屏幕互保</string>

2.3 vendor/mediatek/proprietary/packages/apps/MtkSettings/res/xml/dream_fragment_overview.xml

<PreferenceScreenxmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:settings="http://schemas.android.com/apk/res-auto"android:key="dream_overview_screen"
<SwitchPreferenceandroid:key="screensaver_switch"android:title="@string/screensaver_switch_title"/>

2.4添加vendor/mediatek/proprietary/packages/apps/MtkSettings/src/com/android/settings/dream/ScreenSaverSwitchPreferenceController.java文件

/** Copyright (C) 2017 The Android Open Source Project** Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file* except in compliance with the License. You may obtain a copy of the License at**      http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software distributed under the* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY* KIND, either express or implied. See the License for the specific language governing* permissions and limitations under the License.*/
package com.android.settings.dream;import static android.provider.Settings.Secure.SCREENSAVER_SWITCH;import android.content.Context;
import android.provider.Settings;
import android.support.v14.preference.SwitchPreference;
import android.support.v7.preference.Preference;import com.android.settings.R;
import com.android.settings.core.PreferenceControllerMixin;
import com.android.settingslib.core.AbstractPreferenceController;public class ScreenSaverSwitchPreferenceController extends AbstractPreferenceControllerimplements PreferenceControllerMixin, Preference.OnPreferenceChangeListener {private static final String KEY_SCREENSAVER_SWITCH_NAME = "screensaver_switch";public ScreenSaverSwitchPreferenceController(Context context) {super(context);}@Overridepublic boolean isAvailable() {return true;}@Overridepublic String getPreferenceKey() {return KEY_SCREENSAVER_SWITCH_NAME;}@Overridepublic boolean onPreferenceChange(Preference preference, Object newValue) {boolean value = (Boolean) newValue;Settings.Secure.putInt(mContext.getContentResolver(),KEY_SCREENSAVER_SWITCH_NAME, value ? 1 : 0);if (value) {Settings.Secure.putInt(mContext.getContentResolver(), Settings.Secure.SCREENSAVER_SWITCH,1);} else {Settings.Secure.putInt(mContext.getContentResolver(), Settings.Secure.SCREENSAVER_SWITCH,0);}return true;}@Overridepublic void updateState(Preference preference) {int value = Settings.Secure.getInt(mContext.getContentResolver(),KEY_SCREENSAVER_SWITCH_NAME, 0);((SwitchPreference) preference).setChecked(value == 1);}
}

2.5 vendor/mediatek/proprietary/packages/apps/MtkSettings/src/com/android/settings/dream/DreamSettings.java

@@ -132,6 +132,7 @@ public class DreamSettings extends DashboardFragment {controllers.add(new StartNowPreferenceController(context));
+        controllers.add(new ScreenSaverSwitchPreferenceController(context));return controllers;

3.隐藏“启动时间”

--- a/vendor/mediatek/proprietary/packages/apps/MtkSettings/src/com/android/settings/dream/StartNowPreferenceController.java
+++ b/vendor/mediatek/proprietary/packages/apps/MtkSettings/src/com/android/settings/dream/StartNowPreferenceController.java
@@ -40,7 +40,7 @@ public class StartNowPreferenceController extends AbstractPreferenceController i@Overridepublic boolean isAvailable() {
-        return true;
+        return false;}

4.添加选择无操作多少分钟后进入屏保的ListPreference

4.1添加系统自定义全局变量，用来保存无操作多少分钟后进入屏保的时间。
frameworks/base/core/java/android/provider/Settings.java

 public static final class Secure extends NameValueTable {/** @hide */public static final String SCREENSAVER_TIMEOUT= "seewo.screensavers.timeout";

4.2设置–>显示–>屏保中添加ListPreference
vendor/mediatek/proprietary/packages/apps/MtkSettings/res/xml/dream_fragment_overview.xml

+    <ListPreference
+        android:key="screensaver_timeout"
+        android:title="@string/screensaver_timeout"
+        android:entries="@array/screensaver_timeout_entries"
+        android:entryValues="@array/screensaver_timeout_values"
+        settings:controller="com.android.settings.dream.ScreenSaverTimeoutPreferenceController" />

vendor/mediatek/proprietary/packages/apps/MtkSettings/res/values/arrays.xml

+    <!--  Titles for screensaver preference. -->
+    <string-array name="screensaver_timeout_entries" >
+        <item>@string/screensaver_timeout_1min</item>
+        <item>@string/screensaver_timeout_5mins</item>
+        <item>@string/screensaver_timeout_10mins</item>
+        <item>@string/screensaver_timeout_15mins</item>
+        <item>@string/screensaver_timeout_30mins</item>
+    </string-array>
+
+    <!--  Values for screensaver preference. -->
+    <string-array name="screensaver_timeout_values" translatable="false" >
+        <item>60000</item>
+        <item>300000</item>
+        <item>600000</item>
+        <item>900000</item>
+        <item>1800000</item>
+    </string-array>

vendor/mediatek/proprietary/packages/apps/MtkSettings/res/values-zh-rCN/strings.xml

+    <string name="screensaver_timeout">屏保</string>
+    <string name="screensaver_timeout_1min">1 分钟</string>
+    <string name="screensaver_timeout_5mins">5 分钟</string>
+    <string name="screensaver_timeout_10mins">10 分钟</string>
+    <string name="screensaver_timeout_15mins">15 分钟</string>
+    <string name="screensaver_timeout_30mins">30 分钟</string>
+    <string name="screensaver_timeout_summary">"无操作<xliff:g id="TIMEOUT_DESCRIPTION">%1$s</xliff:g>后"</string>
+    <string name="screensaver_switch_title">屏幕互保</string>

4.3添加vendor\mediatek\proprietary\packages\apps\MtkSettings\src\com\android\settings\dream\ScreenSaverTimeoutPreferenceController.java

/** Copyright (C) 2018 The Android Open Source Project** Licensed under the Apache License, Version 2.0 (the "License");* you may not use this file except in compliance with the License.* You may obtain a copy of the License at**      http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License*/package com.android.settings.dream;import static android.provider.Settings.Secure.SCREENSAVER_TIMEOUT;import android.content.Context;
import android.provider.Settings;
import android.support.v7.preference.ListPreference;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceScreen;
import android.util.FeatureFlagUtils;
import com.android.settings.R;
import com.android.settings.core.BasePreferenceController;
import com.android.settings.core.PreferenceControllerMixin;
import com.android.settingslib.core.AbstractPreferenceController;
/*** Setting where user can pick if SystemUI will be light, dark or try to match* the wallpaper colors.*/
public class ScreenSaverTimeoutPreferenceController extends BasePreferenceControllerimplements Preference.OnPreferenceChangeListener {private ListPreference mScreenSaverTimeoutPref;public ScreenSaverTimeoutPreferenceController(Context context, String preferenceKey) {super(context, preferenceKey);}@Overridepublic int getAvailabilityStatus() {return AVAILABLE;}@Overridepublic void displayPreference(PreferenceScreen screen) {super.displayPreference(screen);mScreenSaverTimeoutPref = (ListPreference) screen.findPreference(getPreferenceKey());int value = Settings.Secure.getInt(mContext.getContentResolver(), SCREENSAVER_TIMEOUT, 60000);mScreenSaverTimeoutPref.setValue(Integer.toString(value));}@Overridepublic boolean onPreferenceChange(Preference preference, Object newValue) {int value = Integer.parseInt((String) newValue);Settings.Secure.putInt(mContext.getContentResolver(), SCREENSAVER_TIMEOUT, value);refreshSummary(preference);return true;}@Overridepublic CharSequence getSummary() {int value = Settings.Secure.getInt(mContext.getContentResolver(), SCREENSAVER_TIMEOUT, 60000);int index = mScreenSaverTimeoutPref.findIndexOfValue(Integer.toString(value));return mContext.getString(R.string.screensaver_timeout_summary, mScreenSaverTimeoutPref.getEntries()[index]);}
}

5.屏保默认为原生时钟，移除“万花筒”

5.1 原生屏保默认是使用Google GMS中的时钟，因此修改为默认使用原生的时钟。
frameworks/base/core/res/res/values/config.xml

-    <string name="config_dreamsDefaultComponent" translatable="false">com.google.android.deskclock/com.android.deskclock.Screensaver</string>
+    <string name="config_dreamsDefaultComponent" translatable="false">com.android.deskclock/com.android.deskclock.Screensaver</string>

5.2移除“万花筒”
vendor/mediatek/proprietary/packages/apps/SettingsLib/src/com/android/settingslib/dream/DreamBackend.java

     public List<DreamInfo> getDreamInfos() {logd("getDreamInfos()");
+        String componentName;//del basic.ColorsComponentName activeDream = getActiveDream();PackageManager pm = mContext.getPackageManager();Intent dreamIntent = new Intent(DreamService.SERVICE_INTERFACE);
@@ -124,6 +125,12 @@ public class DreamBackend {dreamInfo.caption = resolveInfo.loadLabel(pm);dreamInfo.icon = resolveInfo.loadIcon(pm);dreamInfo.componentName = getDreamComponentName(resolveInfo);
+            componentName = dreamInfo.componentName.toString();
+            if(componentName.contains("com.android.dreams.basic.Colors")){
+                continue;
+            }dreamInfo.isActive = dreamInfo.componentName.equals(activeDream);

6.定制屏保时间

如果休眠时间设定小于屏保时间，则优先进入休眠，如果休眠时间设定大于屏保时间，则先进入屏保，达到休眠时间后再进入休眠的实现
frameworks/base/services/core/java/com/android/server/power/PowerManagerService.java

6.1修改进入屏保的条件由Setting中的“屏幕互保”选项的开或关来决定

 private boolean updateWakefulnessLocked(int dirty) {boolean changed = false;if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY | DIRTY_BOOT_COMPLETED| DIRTY_WAKEFULNESS | DIRTY_STAY_ON | DIRTY_PROXIMITY_POSITIVE| DIRTY_DOCK_STATE)) != 0) {if (mWakefulness == WAKEFULNESS_AWAKE && isItBedTimeYetLocked()) {if (DEBUG_SPEW) {Slog.d(TAG, "updateWakefulnessLocked: Bed time...");}final long time = SystemClock.uptimeMillis();if (shouldNapAtBedTimeLocked()) {//此处为进入屏保的条件changed = napNoUpdateLocked(time, Process.SYSTEM_UID);} else {changed = goToSleepNoUpdateLocked(time,PowerManager.GO_TO_SLEEP_REASON_TIMEOUT, 0, Process.SYSTEM_UID);}}}return changed;}

shouldNapAtBedTimeLocked()为进入屏保的条件，所以需要修改shouldNapAtBedTimeLocked()的返回值。

    private boolean shouldNapAtBedTimeLocked() {
-        return mDreamsActivateOnSleepSetting
-                || (mDreamsActivateOnDockSetting
-                        && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED);
+        return Settings.Secure.getInt(mContext.getContentResolver(),Settings.Secure.SCREENSAVER_SWITCH,0) == 1;
+        //return mDreamsActivateOnSleepSetting
+        //        || (mDreamsActivateOnDockSetting
+        //                && mDockState != Intent.EXTRA_DOCK_STATE_UNDOCKED);}

Settings.Secure.getInt(mContext.getContentResolver(),Settings.Secure.SCREENSAVER_SWITCH,0)是获取“屏幕互保”的状态值，1表示打开，0表示关闭。

6.2修改取决于什么时候进入屏保的逻辑。

 private void updateUserActivitySummaryLocked(long now, int dirty) {// Update the status of the user activity timeout timer.if ((dirty & (DIRTY_WAKE_LOCKS | DIRTY_USER_ACTIVITY| DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) {mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT);long nextTimeout = 0;long screenSaverNextTimeout = 0;//添加计算下次进入屏保的时间boolean isScreenSaverEnabled = Settings.Secure.getInt(mContext.getContentResolver(),Settings.Secure.SCREENSAVER_SWITCH,0) == 1;//获取“屏幕互保”是否打开if (mWakefulness == WAKEFULNESS_AWAKE|| mWakefulness == WAKEFULNESS_DREAMING|| mWakefulness == WAKEFULNESS_DOZING) {final long sleepTimeout = getSleepTimeoutLocked();final long screenOffTimeout = getScreenOffTimeoutLocked(sleepTimeout);//无操作多少分钟后进入休眠的时间final long screenDimDuration = getScreenDimDurationLocked(screenOffTimeout);final boolean userInactiveOverride = mUserInactiveOverrideFromWindowManager;final long nextProfileTimeout = getNextProfileTimeoutLocked(now);final long screenSaverTimeout = Settings.Secure.getInt(mContext.getContentResolver(),Settings.Secure.SCREENSAVER_TIMEOUT,60000);//无操作多少分钟后进入屏保的时间mUserActivitySummary = 0;if (mLastUserActivityTime >= mLastWakeTime) {nextTimeout = mLastUserActivityTime+ screenOffTimeout - screenDimDuration;screenSaverNextTimeout = mLastUserActivityTime + screenSaverTimeout;//无操作后下次进入屏保的时间if (now < nextTimeout) {//当“屏幕互保”是打开的，并且无操作后进入休眠的时间 大于 无操作后进入屏保的时间，//而且当前的时间 大于 无操作后下次进入屏保的时间则进入屏保if(isScreenSaverEnabled && screenOffTimeout > screenSaverTimeout && now > screenSaverNextTimeout ){mUserActivitySummary = USER_ACTIVITY_SCREEN_DREAM;}else{//否则保持屏保亮屏mUserActivitySummary = USER_ACTIVITY_SCREEN_BRIGHT;}//Neostra dangziming end screensaver} else {nextTimeout = mLastUserActivityTime + screenOffTimeout;if (now < nextTimeout) {mUserActivitySummary = USER_ACTIVITY_SCREEN_DIM;}}}if (mUserActivitySummary == 0&& mLastUserActivityTimeNoChangeLights >= mLastWakeTime) {nextTimeout = mLastUserActivityTimeNoChangeLights + screenOffTimeout;if (now < nextTimeout) {if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_BRIGHT|| mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_VR) {mUserActivitySummary = USER_ACTIVITY_SCREEN_BRIGHT;} else if (mDisplayPowerRequest.policy == DisplayPowerRequest.POLICY_DIM) {mUserActivitySummary = USER_ACTIVITY_SCREEN_DIM;}}}if (mUserActivitySummary == 0) {if (sleepTimeout >= 0) {final long anyUserActivity = Math.max(mLastUserActivityTime,mLastUserActivityTimeNoChangeLights);if (anyUserActivity >= mLastWakeTime) {nextTimeout = anyUserActivity + sleepTimeout;if (now < nextTimeout) {mUserActivitySummary = USER_ACTIVITY_SCREEN_DREAM;}}} else {//mUserActivitySummary = USER_ACTIVITY_SCREEN_DREAM;//删除系统进入休眠后才进入屏保的逻辑nextTimeout = -1;}}if (mUserActivitySummary != USER_ACTIVITY_SCREEN_DREAM && userInactiveOverride) {if ((mUserActivitySummary &(USER_ACTIVITY_SCREEN_BRIGHT | USER_ACTIVITY_SCREEN_DIM)) != 0) {// Device is being kept awake by recent user activityif (nextTimeout >= now && mOverriddenTimeout == -1) {// Save when the next timeout would have occurredmOverriddenTimeout = nextTimeout;}}mUserActivitySummary = USER_ACTIVITY_SCREEN_DREAM;nextTimeout = -1;}if (nextProfileTimeout > 0) {nextTimeout = Math.min(nextTimeout, nextProfileTimeout);}if (mUserActivitySummary != 0 && nextTimeout >= 0) {//当“屏幕互保”是打开的，并且无操作后进入休眠的时间 大于 无操作后进入屏保的时间，//而且当前的时间 大于 无操作后下次进入屏保的时间则发送信息进入屏保if(isScreenSaverEnabled && screenOffTimeout > screenSaverTimeout && now <= screenSaverNextTimeout ){scheduleUserInactivityTimeout(screenSaverNextTimeout);}else{//否则发送进入休眠的信息scheduleUserInactivityTimeout(nextTimeout);}//Neostra dangziming end screensaver}} else {mUserActivitySummary = 0;}if (DEBUG_SPEW) {Slog.d(TAG, "updateUserActivitySummaryLocked: mWakefulness="+ PowerManagerInternal.wakefulnessToString(mWakefulness)+ ", mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)+ ", nextTimeout=" + TimeUtils.formatUptime(nextTimeout));}}}

updateUserActivitySummaryLocked()的逻辑分析可以参考Android 8.1 PowerManagerService分析(二) ——updatePowerStateLocked()方法

这篇关于Android P 屏保和休眠相关知识的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！


http://www.chinasem.cn/article/647266。

相关文章

Linux使用fdisk进行磁盘的相关操作

Linux使用fdisk进行磁盘的相关操作

《Linux使用fdisk进行磁盘的相关操作》fdisk命令是Linux中用于管理磁盘分区的强大文本实用程序,这篇文章主要为大家详细介绍了如何使用fdisk进行磁盘的相关操作,需要的可以了解下... 目录简介基本语法示例用法列出所有分区查看指定磁盘的区分管理指定的磁盘进入交互式模式创建一个新的分区删除一个存
阅读更多...
关于Maven生命周期相关命令演示

关于Maven生命周期相关命令演示

《关于Maven生命周期相关命令演示》Maven的生命周期分为Clean、Default和Site三个主要阶段,每个阶段包含多个关键步骤,如清理、编译、测试、打包等,通过执行相应的Maven命令,可以... 目录1. Maven 生命周期概述1.1 Clean Lifecycle1.2 Default Li
阅读更多...
numpy求解线性代数相关问题

numpy求解线性代数相关问题

《numpy求解线性代数相关问题》本文主要介绍了numpy求解线性代数相关问题,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面随着小编来一起学习学习吧... 在numpy中有numpy.array类型和numpy.mat类型，前者是数组类型，后者是矩阵类型。数组
阅读更多...
Redis的Hash类型及相关命令小结

Redis的Hash类型及相关命令小结

《Redis的Hash类型及相关命令小结》edisHash是一种数据结构,用于存储字段和值的映射关系,本文就来介绍一下Redis的Hash类型及相关命令小结,具有一定的参考价值,感兴趣的可以了解一下... 目录HSETHGETHEXISTSHDELHKEYSHVALSHGETALLHMGETHLENHSET
阅读更多...
Android数据库Room的实际使用过程总结

Android数据库Room的实际使用过程总结

《Android数据库Room的实际使用过程总结》这篇文章主要给大家介绍了关于Android数据库Room的实际使用过程,详细介绍了如何创建实体类、数据访问对象（DAO）和数据库抽象类,需要的朋友可以... 目录前言一、Room的基本使用1.项目配置2.创建实体类（Entity）3.创建数据访问对象（DAO
阅读更多...
python中的与时间相关的模块应用场景分析

python中的与时间相关的模块应用场景分析

《python中的与时间相关的模块应用场景分析》本文介绍了Python中与时间相关的几个重要模块：`time`、`datetime`、`calendar`、`timeit`、`pytz`和`dateu... 目录1. time 模块2. datetime 模块3. calendar 模块4. timeit
阅读更多...
Android WebView的加载超时处理方案

Android WebView的加载超时处理方案

《AndroidWebView的加载超时处理方案》在Android开发中,WebView是一个常用的组件,用于在应用中嵌入网页,然而,当网络状况不佳或页面加载过慢时,用户可能会遇到加载超时的问题,本... 目录引言一、WebView加载超时的原因二、加载超时处理方案1. 使用Handler和Timer进行超
阅读更多...
Java架构师知识体认识

Java架构师知识体认识

源码分析 常用设计模式 Proxy代理模式Factory工厂模式Singleton单例模式Delegate委派模式Strategy策略模式Prototype原型模式Template模板模式 Spring5 beans 接口实例化代理Bean操作 Context Ioc容器设计原理及高级特性Aop设计原理Factorybean与Beanfactory Transaction 声明式事物
阅读更多...
sqlite3 相关知识

sqlite3 相关知识

WAL 模式 VS 回滚模式 特性WAL 模式回滚模式（Rollback Journal）定义使用写前日志来记录变更。使用回滚日志来记录事务的所有修改。特点更高的并发性和性能；支持多读者和单写者。支持安全的事务回滚，但并发性较低。性能写入性能更好，尤其是读多写少的场景。写操作会造成较大的性能开销，尤其是在事务开始时。写入流程数据首先写入 WAL 文件，然后才从 WAL 刷新到主数据库。数据在开始
阅读更多...
Android实现任意版本设置默认的锁屏壁纸和桌面壁纸（两张壁纸可不一致）

Android实现任意版本设置默认的锁屏壁纸和桌面壁纸（两张壁纸可不一致）

客户有些需求需要设置默认壁纸和锁屏壁纸  在默认情况下 这两个壁纸是相同的  如果需要默认的锁屏壁纸和桌面壁纸不一样 需要额外修改 Android13实现 替换默认桌面壁纸： 将图片文件替换frameworks/base/core/res/res/drawable-nodpi/default_wallpaper.*  （注意不能是bmp格式） 替换默认锁屏壁纸： 将图片资源放入vendo
阅读更多...

Copyright China编程 23002807@qq.com

沪ICP备2023033072号-2