این هم کد

[saeed_g21]

فکر کنم نیاز به توضیح نداره

int screenSize = getResources().getConfiguration().screenLayout &

        Configuration.SCREENLAYOUT_SIZE_MASK;

switch(screenSize) {

    case Configuration.SCREENLAYOUT_SIZE_LARGE:

        Toast.makeText(this, "Large screen",Toast.LENGTH_LONG).show();

        break;

    case Configuration.SCREENLAYOUT_SIZE_NORMAL:

        Toast.makeText(this, "Normal screen",Toast.LENGTH_LONG).show();

        break;

    case Configuration.SCREENLAYOUT_SIZE_SMALL:

        Toast.makeText(this, "Small screen",Toast.LENGTH_LONG).show();

        break;

    default:

        Toast.makeText(this, "Screen size is neither large, normal or small" , Toast.LENGTH_LONG).show();

}