title: Disabled Keyguard Lock and turn screen on and keep it on, in Android programming
body: <p>i wrote an android alarm program. it work properly in many devices but in some device when the screen in on the alarm activity open and alarm work properly, but in some device it is not work when the screen is off. please help me in write code for disable keyguard lock and then keep the screen on until the user click on one button. thanks for your help...</p>