in agreement with the recent post from Android Developers http://android-developers.blogspot.pt/2013/10/getting-your-sms-apps-ready-for-kitkat.html ,I was trying to prepare my app to the new android version, but encountered a problem with the part they suggest to create a dialog to let the user set the app as the default application to handle SMS's :

Android Developers Post

public class ComposeSmsActivity extends Activity {

@Override
protected void onResume() {
    super.onResume();

    final String myPackageName = getPackageName();
    if (!Telephony.Sms.getDefaultSmsPackage(this).equals(myPackageName)) {
        // App is not default.
        // Show the "not currently set as the default SMS app" interface
        View viewGroup = findViewById(R.id.not_default_app);
        viewGroup.setVisibility(View.VISIBLE);

        // Set up a button that allows the user to change the default SMS app
        Button button = (Button) findViewById(R.id.change_default_app);
        button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                Intent intent =
                        new Intent(Telephony.Sms.Intents.ACTION_CHANGE_DEFAULT);
                intent.putExtra(Telephony.Sms.Intents.EXTRA_PACKAGE_NAME, 
                        myPackageName);
                startActivity(intent);
            }
        });
    } else {
        // App is the default.
        // Hide the "not currently set as the default SMS app" interface
        View viewGroup = findViewById(R.id.not_default_app);
        viewGroup.setVisibility(View.GONE);
    }
}

}

the code itself in pretty much straightforward, but I'm unable to access to Telephony.Sms.getDefaultSmsPackage because it says that Telephony cannot be resolved, and I can't find any import or declaration that would fix that.

Can anyone please help?

Thanks in advanced.