Android设置系统开机自己主动永不休眠 _Android

宝剑锋从磨砺出，梅花香自苦寒来。这篇文章主要讲述Android设置系统开机自己主动永不休眠相关的知识，希望能为你提供帮助。
android4.2系统增永不休眠同一时候隐藏休眠选项
1. android\frameworks\base\packages\SettingsProvider\res\values\defaults.xml中设置def_screen_off_timeout为-1，
< integername=" def_screen_off_timeout" > -1< /integer>

2. android\packages\apps\Settings\res\values\arrays.xml文件添加两项。标红选项。
< !--Display settings. The delay ininactivity before the screen is turned off. These are shown ain a list dialog.-->
< string-arrayname=" 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>

3. android\packages\apps\Settings\res\values-zh-rCN中添加永不休眠相应的中文
< string-arrayname=" screen_timeout_entries" >
< itemmsgid=" 3342301044271143016" > " 15 秒" < /item>
< itemmsgid=" 8881760709354815449" > " 30 秒" < /item>
< item msgid=" 7589406073232279088" > " 1分钟" < /item>
< itemmsgid=" 7001195990902244174" > " 2 分钟" < /item>
< itemmsgid=" 7489864775127957179" > " 5 分钟" < /item>
< itemmsgid=" 2314124409517439288" > " 10 分钟" < /item>
< itemmsgid=" 6864027152847611413" > " 30 分钟" < /item>
< item msgid=" 9989898989898989898" > " 永不休眠" < /item>
< /string-array>

4./services/java/com/android/server/power/PowerManagerService.java
private int getScreenOffTimeoutLocked() {
int DonotSleeptimeout;
int timeout =mScreenOffTimeoutSetting;
if(isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) {
timeout = Math.min(timeout,mMaximumScreenOffTimeoutFromDeviceAdmin);

if(mUserActivityTimeoutOverrideFromWindowManager > = 0) {
timeout = (int)Math.min(timeout,mUserActivityTimeoutOverrideFromWindowManager);
}
DonotSleeptimeout = mScreenOffTimeoutSetting;
if(DonotSleeptimeout < 0)
{
DonotSleeptimeout= mMaximumScreenOffTimeoutFromDeviceAdmin ;
returnMath.max(DonotSleeptimeout, mMaximumScreenOffTimeoutFromDeviceAdmin);
}
return Math.max(timeout,MINIMUM_SCREEN_OFF_TIMEOUT);
}

privatevoid updateUserActivitySummaryLocked(long now, int dirty) {
// Update the status of the useractivity timeout timer.
if ((dirty & (DIRTY_USER_ACTIVITY |DIRTY_WAKEFULNESS | DIRTY_SETTINGS)) != 0) {
mHandler.removeMessages(MSG_USER_ACTIVITY_TIMEOUT);

long nextTimeout = 0;
if (mWakefulness !=WAKEFULNESS_ASLEEP) {
final int screenOffTimeout =getScreenOffTimeoutLocked();
final int screenDimDuration =getScreenDimDurationLocked(screenOffTimeout);

mUserActivitySummary = 0;
if (mLastUserActivityTime > =mLastWakeTime) {
nextTimeout =mLastUserActivityTime
+ screenOffTimeout- screenDimDuration;
if (now < nextTimeout) {
mUserActivitySummary |=USER_ACTIVITY_SCREEN_BRIGHT;
} else {
nextTimeout =mLastUserActivityTime + screenOffTimeout;
if (now < nextTimeout) {
mUserActivitySummary|= USER_ACTIVITY_SCREEN_DIM;
}
}
}
if (mUserActivitySummary == 0
& & mLastUserActivityTimeNoChangeLights > = mLastWakeTime) {
nextTimeout =mLastUserActivityTimeNoChangeLights + screenOffTimeout;
if (now < nextTimeout
& & mDisplayPowerRequest.screenState
!=DisplayPowerRequest.SCREEN_STATE_OFF) {
mUserActivitySummary =mDisplayPowerRequest.screenState
==DisplayPowerRequest.SCREEN_STATE_BRIGHT ?
USER_ACTIVITY_SCREEN_BRIGHT : USER_ACTIVITY_SCREEN_DIM;
}
}
if (mUserActivitySummary != 0& & mScreenOffTimeoutSetting > 0) {
Message msg =mHandler.obtainMessage(MSG_USER_ACTIVITY_TIMEOUT);
msg.setAsynchronous(true);
mHandler.sendMessageAtTime(msg,nextTimeout);
}
} else {
mUserActivitySummary = 0;
}

if (DEBUG_SPEW) {
Slog.d(TAG," updateUserActivitySummaryLocked: mWakefulness="
+ wakefulnessToString(mWakefulness)
+ " ,mUserActivitySummary=0x" + Integer.toHexString(mUserActivitySummary)
+ " ,nextTimeout=" + TimeUtils.formatUptime(nextTimeout));
}
}
}

5. /android/packages/apps/Settings/src/com/android/settings/ DisplaySettings.java
privatevoid updateTimeoutPreferenceDescription(long currentTimeout) {
ListPreference preference =mScreenTimeoutPreference;
String summary;
if (currentTimeout < -1) {
// Unsupported value
summary = " " ;
} else {
final CharSequence[] entries =preference.getEntries();
final CharSequence[] values =preference.getEntryValues();
if (entries == null ||entries.length == 0) {
summary = " " ;
} else {
int best = 0;
for (int i = 0; i < values.length; i+ + ) {
long timeout =Long.parseLong(values[i].toString());
if (currentTimeout > =timeout) {
best = i;

}
}

summary = preference.getContext().getString(R.string.screen_timeout_summary,
entries[best]);
if(currentTimeout < 0)summary =entries[best].toString();
}
}
preference.setSummary(summary);

}

onCreate方法中隐藏休眠选项：

mScreenTimeoutPreference= (ListPreference) findPreference(KEY_SCREEN_TIMEOUT);
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);
//hide sleep item
getPreferenceScreen().removePreference(mScreenTimeoutPreference);

【Android设置系统开机自己主动永不休眠】

Android设置系统开机自己主动永不休眠

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