Want to Access Power Button events in android

Question

   i=0;
   public boolean onKeyDown(int keyCode, KeyEvent event) {
    System.out.println(\"In Key Down Method.\" + event.getKeyCode());
    if (event.getKeyCode() =         


        

Answer 1

You should add the following permission to your manifest file:

<uses-permission android:name="android.permission.PREVENT_POWER_KEY" />

Answer 2

You cannot override the power button press from your application. But when you press power button the screen turns on/off. So you can detect this using a broadcast receiver.

<receiver android:name=".MyBroadCastReciever">
<intent-filter>
    <action android:name="android.intent.action.SCREEN_OFF"/>
    <action android:name="android.intent.action.SCREEN_ON"/>
</intent-filter>
</receiver>

MyBroadCastReciever.java

public class MyBroadCastReciever extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
    if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
        //Take count of the screen off position
    } else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
        //Take count of the screen on position
    }
}
}

Hope this is helpful for you.

Note:-For to keep my broadcast receiver always running in Background.I am written one Background Service which continuously start in background and give boost to my broadcast receiver.