[Android] Size and screen density

screen_density

public void determineScreenDensity() {
	DisplayMetrics metrics = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(metrics);
    int density = metrics.densityDpi;

    if (density==DisplayMetrics.DENSITY_HIGH) {
        Toast.makeText(this, "DENSITY_HIGH: " + String.valueOf(density),  Toast.LENGTH_LONG).show();
    }
    else if (density==DisplayMetrics.DENSITY_MEDIUM) {
        Toast.makeText(this, "DENSITY_MEDIUM: " + String.valueOf(density),  Toast.LENGTH_LONG).show();
    }
    else if (density==DisplayMetrics.DENSITY_LOW) {
        Toast.makeText(this, "DENSITY_LOW:" + String.valueOf(density),  Toast.LENGTH_LONG).show();
    }
    else {
        Toast.makeText(this, "Density is neither HIGH, MEDIUM OR LOW: " + String.valueOf(density),  Toast.LENGTH_LONG).show();
    }
}

screen_size

public void determineScreenSize() {
	if((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_LARGE) {     
        Toast.makeText(this, "Large screen",Toast.LENGTH_LONG).show();
    }else if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_NORMAL) {     
        Toast.makeText(this, "Normal sized screen" , Toast.LENGTH_LONG).show();
    }else if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_SMALL) {     
        Toast.makeText(this, "Small sized screen" , Toast.LENGTH_LONG).show();
    }else {
        Toast.makeText(this, "Screen size is neither large, normal or small" , Toast.LENGTH_LONG).show();
    }
}