Is it possible to launch an android application activity when the phone starts?

Im attempting to build an android application and one of the key features to this application is for开发者_如何学JAVA it to be able to launch an activity automatically when the phone starts, I see some apps on my phone that already do this, any help would be great so that I can atleast research this a little better through the sdk, thanks!

You need to implement BroadCastreceiver like this:

public class PhoneStateReceiver extends BroadcastReceiver{

    @Override
    public void onReceive(final Context context, Intent intent) {

        if(intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)){
            Intent launch = new Intent(context, AcitivityToLaunch.class);
            launch.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(launch);
        }
    }
}

In your manifest add this:

<receiver android:name=".receiver.PhoneStateReceiver">
    <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED" />
    </intent-filter>
</receiver>

Add permission:

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