Android sim card listeners

I want to implement a getSimstate() listener in my service class. I'm not able to do that.

I know it can be done using sim listeners in Telephony class, but I didn't find any code to implement it.

Is code available to listen to wheth开发者_JAVA技巧er a SIM is ready or not?

---

final TelephonyManager tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);

        tm.listen(new PhoneStateListener() {
            @Override
            public void onServiceStateChanged(ServiceState serviceState) {
                //Code in here executed when the sim state has changed
            }

            @Override
            public void onDataConnectionStateChanged(int state) {

            }
});

---

in Manifest File

   <receiver
        android:name=".SimChangedReceiver"
        android:enabled="true"
        android:process=":remote" >
        <intent-filter>
            <action android:name="android.intent.action.SIM_STATE_CHANGED" />
        </intent-filter>
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
        </intent-filter>
    </receiver>

SimChangedReceiver class

public class SimChangedReceiver extends BroadcastReceiver {

    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        if (action.equalsIgnoreCase("android.intent.action.SIM_STATE_CHANGED")) {
            Log.d("SimChangedReceiver", "--> SIM state changed <--");   
        }
    }
}