Prevent locking on custom Android app

What code would you use to prevent the Droid from locking on an app? I am writing an app 开发者_高级运维that uses sockets, and it is essential that the screen not lock in the middle of the app's execution.

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Turn Off Screen Lock by adding the following against the Activity in your AndroidManifest.xml

android:keepScreenOn="true" 

The screen will remain on and be cautious of using this as the display being kept on could impact your battery usage in you Application.

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You need a wake lock, obtained from the Power Manager.

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I'm not entirely sure what you mean. But I took it to be an unresponsive UI. So if that assumption is correct threading is your answer, do your socket work in here so the UI does not "lock-up"

new Thread(new Runnable(){
    @Override
    public void run(){ 
        Code Here ....
    }
}).start();

Keep in mind also that if you have strange exceptions about modifying UI elements from this thread the Looper can sometimes be useful. http://developer.android.com/reference/android/os/Looper.html