android.intent.action.SCREEN_OFF

I am trying to detect Screen backlight On / Off.

I've found android.intent.action.SCREEN_OFF related its event.

But I don't know how to use this.

Can you suggest me about how to detect screen backlight on / off ?

开发者_StackOverflowI missing some example or sample code.

Thanks in advance.

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If you still need to use a BroadCastReceiver, you have to register it in code using the registerReceiver(receiver, filter) on one of your Activities.

The intents do not fire if you register them in the Manifest.

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Create a BroadCastReciever, Add an Intent Filter including your Intent (android.intent.action.SCREEN_OFF).

Just Override the OnRecieve function in the BroadcastReciver with your code.

Be Sure to include the BroadcastReciever in the Manifest File!

good luck! :)

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I think you can have a look at this class. The method isScreenOn() might be what you need.