android4.0.4系统里去掉锁屏和休眠

http://blog.csdn.net/chenyafei617/article/details/6575621

我知道，需要在settings软件里修改。不过，我是想直接利用设置里的对锁屏和休眠的设置的选项，查找源码搞。看了settings源码很久，太多了。估计继续找下去，需要一段时间。正好在卓睿的群里的聊天记录找到这方面的讨论。知道了上面的网址。

然后就搞定了。哈！……

1、 去除休眠

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

里<integer name="def_screen_off_timeout">60000</integer>

60000ms，修改为-1。-1代表0xffffffff，等于永远不要休眠了

2、 去除锁屏

frameworks/policies/base/phone/com/android/internal/policy/impl/KeyguardViewMediator.java

文章里的路径有错误

正确的路径是：

Frameworks/base/policy/src/com/android/internal/policy/impl/KeyguardViewMediator.java

找到

/**

* External apps (like the phone app) can tell us to disable the keygaurd.

*/

private boolean mExternallyEnabled = true

将mExternallyEnabled 修改为false

这样就默认，不启动锁屏了。

也可以通过应用层软件去修改，这样在你的软件里，就可以控制是否锁屏了

/**

* Same semantics as {@link WindowManagerPolicy#enableKeyguard}; provide

* a way for external stuff to override normal keyguard behavior. For instance

* the phone app disables the keyguard when it receives incoming calls.

*/

public void setKeyguardEnabled(boolean enabled) {

synchronized (this) {

if (DEBUG) Log.d(TAG, "setKeyguardEnabled(" + enabled + ")");

mExternallyEnabled = enabled;

if (!enabled && mShowing) {

if (mExitSecureCallback != null) {

if (DEBUG) Log.d(TAG, "in process of verifyUnlock request, ignoring");

// we're in the process of handling a request to verify the user

// can get past the keyguard. ignore extraneous requests to disable / reenable

return;

}

// hiding keyguard that is showing, remember to reshow later

if (DEBUG) Log.d(TAG, "remembering to reshow, hiding keyguard, "

+ "disabling status bar expansion");

mNeedToReshowWhenReenabled = true;

hideLocked();

} else if (enabled && mNeedToReshowWhenReenabled) {

...

...

}

}