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 <ListPreference android: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
