findViewById - in separate class

Question

I'm new to Android and I wanted to create a class that would load an ad inside the current layout. All the layouts have a RelativeLayout id=adLayout

From my main, I have:

AdLoader al = new AdLoader();
al.GrabAd(this,"123");

Then on my AdLoader.java class I have:

public class AdLoader {
 private DfpAdView adView;
 public void GrabAdFor(Activity act, String adId) {
 adView = new DfpAdView(act, AdSize.BANNER, adId);
 RelativeLayout rl = (RelativeLayout) act.findViewById(R.id.adLayout);
 rl.addView(adView);
 adView.loadAd(new AdRequest());
 }
}

Is it incorrect to pass the Activity? Am I even passing the activity or the View/Context?

Answer 1

You could also make a baseactivity for all the other activity that are going to use the adView

 public class BaseActivity extends Activity {
 private DfpAdView adView;
 RelativeLayout rl;
 //some other stuff
 @Override
 public void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.baseactivity_layout)
 rl = (RelativeLayout) findViewById(R.id.adLayout);
 adView = new DfpAdView(this, AdSize.BANNER, adId);
 rl.addView(adView);
 adView.loadAd(new AdRequest());
 }
}

And and make your MainActivity (or all the other activities that are using the adview)

public class MainActivity extends BaseActivity {
 @Override
 public void onCreate(Bundle savedInstanceState){
 }
}