How can I get Battery information in my app?

I tried to use a receiver to get Information about battery when received a system broadcast, but it failed without doing anything.

Here is the code:

if (Intent.ACTION_BATTERY_CHANGED.equals(intent.getAction())) {//doing

1...

}

and in AndroidManifest.xml

<receiver android:name=".BroadCastR开发者_Go百科eceiver_battery">

<intent-filter>

<action android:name="android.intent.action.BATTERY_CHANGED" />

</intent-filter>

</receiver>

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quasharou ,

I found this tutorial useful

Hope it helps .