Android4.4屏幕不休眠&不锁屏

约定不等于承诺〃 2022-07-12 23:14 275阅读 0赞

首先还是要修改defaults.xml文件里def\_screen\_off\_timeout的值。

1.  修改default值，不自动休眠

/frameworks/base/packages/SettingsProvider/res/values/defaults.xml

修改def\_screen\_off\_timeout为-1

2.修改frameworks/base/services/java/com/android/server/power/PowerManagerService.java文件getScreenOffTimeoutLocked()函数

修改前：  
 private int getScreenOffTimeoutLocked() \{   
        int timeout = mScreenOffTimeoutSetting;   
        if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) \{   
            timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin);   
        \}   
        if (mUserActivityTimeoutOverrideFromWindowManager >= 0) \{   
            timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager);   
        \}   
          
        return Math.max(timeout, MINIMUM\_SCREEN\_OFF\_TIMEOUT);   
    \}  
  修改后：  
   private int getScreenOffTimeoutLocked() \{  
   int nosleep;   
   int timeout = mScreenOffTimeoutSetting;   
   if (isMaximumScreenOffTimeoutFromDeviceAdminEnforcedLocked()) \{   
    timeout = Math.min(timeout, mMaximumScreenOffTimeoutFromDeviceAdmin);   
   \}   
   if (mUserActivityTimeoutOverrideFromWindowManager >= 0) \{   
    timeout = (int)Math.min(timeout, mUserActivityTimeoutOverrideFromWindowManager);   
   \}   
   nosleep = mScreenOffTimeoutSetting;   
   if(nosleep  < 0)   
   \{   
    nosleep = mMaximumScreenOffTimeoutFromDeviceAdmin ;   
    return Math.max(nosleep, mMaximumScreenOffTimeoutFromDeviceAdmin);   
   \}   
   return Math.max(timeout, MINIMUM\_SCREEN\_OFF\_TIMEOUT);   
  \}

不锁屏：frameworks/base/packages/Keyguard/src/com/android/keyguard/KeyguardViewMediator.java文件中  
192行：private boolean mExternallyEnabled = true  改为false