android 设置永不休眠

在alps\frameworks\base\packages\SettingsProvider\res\values\defaults.xml中
设置def_screen_off_timeout为-1,即
<integer name="def_screen_off_timeout">-1</integer>
同时请注意,经由下面的操作,setting里面休眠时间的Never菜单才会出来:
修改alps\packages\apps\Settings\res\values\arrays.xml:
<!-- Display settings.  The delay in inactivity before the screen is
turned off. These are shown ain a list dialog. -->
<string-array name="screen_timeout_entries">
<item>15 seconds</item>
<item>30 seconds</item>
<item>1 minute</item>
<item>2 minutes</item>
<item>10 minutes</item>
<item>30 minutes</item>
<item>never</item>
</string-array>
<!-- Do not translate. -->
<string-array name="screen_timeout_values" translatable="false">
<!-- Do not translate. -->
<item>15000</item>
<!-- Do not translate. -->
<item>30000</item>
<!-- Do not translate. -->
<item>60000</item>
<!-- Do not translate. -->
<item>120000</item>
<!-- Do not translate. -->
<item>600000</item>
<!-- Do not translate. -->
<item>1800000</item>
<item>-1</item>
</string-array>
修改对比语言value文件夹下的arrays.xml, 修改screen_timeout_entries对应的翻
译。不用管那个msgid,只是google用来表示是他自己的资源而已,直接添加<item
>"永不"</item>即可,请知悉。
2.在前面的修改基础上再修改下面的代码:
PowerManagerService.java
private void updateUserActivitySummaryLocked(long now, int dirty) {
.....
//change code here ==============
Slog.d(TAG,"mScreenOffTimeoutSetting ="+mScreenOffTimeoutSetting);
//if (mUserActivitySummary != 0 ) {
if (mUserActivitySummary != 0 && mScreenOffTimeoutSetting > 0) {
//change code here  end ==============
Message msg = mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT);
msg.setAsynchronous(true);
mHandler.sendMessageAtTime(msg, nextTimeout);
}