在进行Android系统开发的时候，有些特定的情况需要设置系统永不锁屏，永不休眠。本篇文章给大家介绍Android 永不锁屏，开机不锁屏，删除设置中休眠时间选项，需要的朋友一起学习吧。

Android 6.0.1
Create:2016-02-29

1.Settings 删掉屏幕待机选项

packages/apps/Settings/res/xml/display_settings.xml<!-- Hide screen sleep<ListPreferenceandroid:key="screen_timeout"android:title="@string/screen_timeout"android:summary="@string/screen_timeout_summary"android:persistent="false"android:entries="@array/screen_timeout_entries"android:entryValues="@array/screen_timeout_values" /> -->

注释掉这个ListPreference

packages/apps/Settings/src/com/android/settings/DisplaySettings.java

添加if条件，如果没有找到这个preference就不执行相关操作；具体可以参考被隐藏的 night_mode

mScreenTimeoutPreference = (ListPreference) findPreference(KEY_SCREEN_TIMEOUT);if (mScreenTimeoutPreference !=null ) {final long currentTimeout = Settings.System.getLong(resolver, SCREEN_OFF_TIMEOUT,FALLBACK_SCREEN_TIMEOUT_VALUE);mScreenTimeoutPreference.setValue(String.valueOf(currentTimeout));mScreenTimeoutPreference.setOnPreferenceChangeListener(this);disableUnusableTimeouts(mScreenTimeoutPreference);updateTimeoutPreferenceDescription(currentTimeout);}

2.禁止锁屏

frameworks/base/packages/SettingsProvider/res/values/defaults.xml<bool name="def_lockscreen_disabled">false</bool> 改为 true；即默认禁止锁屏frameworks/base/core/res/res/values/config.xml<integer name="config_multiuserMaximumUsers">1</integer> 不允许多用户；即最大用户数为1

分别编译frameworks/base/packages/SettingsProvider 与 frameworks/base

编译后push 到 system/priv-app/SettingsProvider/SettingsProvider.apk system/framework/framework.jar

删去机器中对应的oat目录。重启或恢复出厂设置。第一次开机时，会先出现status bar，launcher要等一会才出来。

之后重启就可以直接进入launcher。机器会默认不锁屏。但还是会进入sleep状态。

源码流程：

frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.javaif (upgradeVersion == 54)// 版本为54才会设置timeout......private void upgradeScreenTimeoutFromNever(SQLiteDatabase db) {// See if the timeout is -1 (for "Never").Cursor c = db.query(TABLE_SYSTEM, new String[] { "_id", "value" }, "name=? AND value=?",new String[] { Settings.System.SCREEN_OFF_TIMEOUT, "-1" },null, null, null);SQLiteStatement stmt = null;if (c.getCount() > 0) {c.close();try {stmt = db.compileStatement("INSERT OR REPLACE INTO system(name,value)"+ " VALUES(?,?);");// Set the timeout to 30 minutes in millisecondsloadSetting(stmt, Settings.System.SCREEN_OFF_TIMEOUT,Integer.toString(30 * 60 * 1000));} finally {if (stmt != null) stmt.close();}} else {c.close();}}......if (SystemProperties.getBoolean("ro.lockscreen.disable.default", false) == true) {loadSetting(stmt, Settings.System.LOCKSCREEN_DISABLED, "1");} else {loadBooleanSetting(stmt, Settings.System.LOCKSCREEN_DISABLED,R.bool.def_lockscreen_disabled);}

timeout若是-1，则永不锁屏

读取"ro.lockscreen.disable.default"，如果默认为true，则设置禁止锁屏；否则从xml中读配置

frameworks/base/packages/SettingsProvider/res/values/defaults.xml<integer name="def_screen_off_timeout">60000</integer><bool name="def_lockscreen_disabled">false</bool>`

禁止锁屏默认为false

以上内容是小编给大家介绍的设置Android系统永不锁屏永不休眠的方法，希望对大家有所帮助。