getWindow（）addFlags（WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON。|
            WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD |
            WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED |
            WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON）;
 

请尝试使用此标志来禁用活动时启动锁屏。

在API级别17，你可以用

 ＆LT;活动
        机器人：名称=。yourActivityName
        机器人：showOnLockScreen =真
        机器人：screenOrientation =sensorPortrait＆GT;
 

showOnLockScreen像在示例...

How can I display an Activity or Dialog to be visible over the lock screen?

I have already tried displaying my lock activity when screen turns on by setting various window type in Activity.onCreate() method:

TYPE_PRIORITY_PHONE
TYPE_SYSTEM_ALERT
TYPE_KEYGUARD

and others together with SYSTEM_ALERT_WINDOW and INTERNAL_SYSTEM_WINDOW permissions.

My activity is visible after I unlock the device.

UPDATE:

I actually already managed to display my own Activity instead of default lock screen. It work perfectly unless you use HOME button.

getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON|
            WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD|
            WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED|
            WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);

try using this flags to disable lock screen when the activity is started.

After API level 17 you can use

<activity
        android:name=".yourActivityName"
        android:showOnLockScreen="true"
        android:screenOrientation="sensorPortrait" >

showOnLockScreen like in the example...