AdMob Mediation Workaround for Smart Banner Ad Types

gistfile1.java

//Constants for tablet sized ads (728x90)
//AdMob name: LEADERBOARD
final int IAB_LEADERBOARD_WIDTH = 728;
final int IAB_LEADERBOARD_HEIGHT = 90;
//AdMob name: FULL_BANNER
final int MED_BANNER_WIDTH = 480;
final int MED_BANNER_HEIGHT = 60;
//Constants for phone sized ads (320x50)
//AdMob name: BANNER
final int BANNER_AD_WIDTH = 320;
final int BANNER_AD_HEIGHT = 50;

//Finds an ad that best fits a user's device.
LinearLayout.LayoutParams adViewLayoutParams = null;
if(canFit(activity, IAB_LEADERBOARD_WIDTH)) {
    adViewLayoutParams = new LinearLayout.LayoutParams((int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, IAB_LEADERBOARD_WIDTH, activity.getResources().getDisplayMetrics()),
            (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, IAB_LEADERBOARD_HEIGHT, activity.getResources().getDisplayMetrics()));
    adViewLayoutParams.gravity = Gravity.CENTER;
    adView.setAdSize(AdSize.LEADERBOARD);
} else if(canFit(activity, MED_BANNER_WIDTH)) {
    adViewLayoutParams = new LinearLayout.LayoutParams((int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, MED_BANNER_WIDTH, activity.getResources().getDisplayMetrics()),
            (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, MED_BANNER_HEIGHT, activity.getResources().getDisplayMetrics()));
    adViewLayoutParams.gravity = Gravity.CENTER;
    adView.setAdSize(AdSize.FULL_BANNER);
} else {
    adViewLayoutParams = new LinearLayout.LayoutParams((int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, BANNER_AD_WIDTH, activity.getResources().getDisplayMetrics()),
            (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, BANNER_AD_HEIGHT, activity.getResources().getDisplayMetrics()));
    adViewLayoutParams.gravity = Gravity.CENTER;
    adView.setAdSize(AdSize.BANNER);
}

//Method from MillenialMedia
private static boolean canFit(Activity activity, int adWidth) {
    int adWidthPx = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, adWidth, activity.getResources().getDisplayMetrics());
    DisplayMetrics metrics = activity.getResources().getDisplayMetrics();
    return metrics.widthPixels >= adWidthPx;
}